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<a accesskey="h" href="../index.html"> UP </a>
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<a accesskey="H" href="../index.html"> HOME </a>
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</div><div id="content">
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<h1 class="title">Measurements</h1>
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<div id="table-of-contents">
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<h2>Table of Contents</h2>
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<div id="text-table-of-contents">
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<ul>
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<li><a href="#org2e8dc82">1. Experimental conditions</a></li>
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<li><a href="#org2f1a089">2. Measurements procedure</a></li>
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<li><a href="#orgcb92a24">3. Measurement Files</a></li>
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<li><a href="#orgad05307">4. Data Analysis</a>
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<li><a href="#orgb9e4bbf">1. Experimental conditions</a></li>
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<li><a href="#orgbe7bf59">2. Measurements procedure</a></li>
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<li><a href="#org3337380">3. Measurement Files</a></li>
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<li><a href="#orgc59cdd1">4. Data Analysis</a>
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<ul>
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<li><a href="#org28e779a">4.1. Loading of the data</a></li>
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<li><a href="#orgf5d9ddc">4.2. Pre-processing of the data</a></li>
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<li><a href="#orgf90fc5f">4.3. X-direction FRF</a></li>
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<li><a href="#orgec13f33">4.4. Y-direction FRF</a></li>
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<li><a href="#org0696fe4">4.5. Z-direction FRF</a></li>
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<li><a href="#org97ea2b9">4.1. Loading of the data</a></li>
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||||
<li><a href="#org55d35ad">4.2. Pre-processing of the data</a></li>
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<li><a href="#org409f95e">4.3. X-direction FRF</a></li>
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<li><a href="#org5ca4365">4.4. Y-direction FRF</a></li>
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<li><a href="#org491a242">4.5. Z-direction FRF</a></li>
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</ul>
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</li>
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<li><a href="#orgf03bfb4">5. Results</a></li>
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</ul>
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</div>
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</div>
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<div id="outline-container-orgb9e4bbf" class="outline-2">
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<h2 id="orgb9e4bbf"><span class="section-number-2">1</span> Experimental conditions</h2>
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<div class="outline-text-2" id="text-1">
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<table border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
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<colgroup>
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<col class="org-left" />
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<col class="org-left" />
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</colgroup>
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<tbody>
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<tr>
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<td class="org-left"><b>Date</b></td>
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<td class="org-left">2017-11-17</td>
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</tr>
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<tr>
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<td class="org-left"><b>Sensors</b></td>
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<td class="org-left">Accelerometers</td>
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</tr>
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<tr>
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<td class="org-left"><b>Excitation</b></td>
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<td class="org-left">Instrumented Hammer</td>
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</tr>
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<tr>
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<td class="org-left"><b>Location</b></td>
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<td class="org-left">Laboratory</td>
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</tr>
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</tbody>
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||||
</table>
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||||
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<p>
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<a href="../index.html">Back to main page</a>.
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Dynamics of the station is evaluated using instrumented hammer and accelerometers fixed on each stage.
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</p>
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<div id="outline-container-org2e8dc82" class="outline-2">
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<h2 id="org2e8dc82"><span class="section-number-2">1</span> Experimental conditions</h2>
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<div class="outline-text-2" id="text-1">
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<p>
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||||
<b>Goal</b>:
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</p>
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<ul class="org-ul">
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<li>Obtain a first estimation of resonance frequencies</li>
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</ul>
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<ul class="org-ul">
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<li>Measurement made in a metrology lab</li>
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<li>The granite is not glued to the floor</li>
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<li>The Y-Translation stage is powered and in closed-loop</li>
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<li>The spindle is not powered</li>
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<li>Mass is placed on top of the Hexapod (<b>how much?</b>) (figure <a href="#orge067538">1</a>).</li>
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<li>Mass is placed on top of the Hexapod (<b>how much?</b>) (figure <a href="#orgb5022d9">1</a>).</li>
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<li>Made by Marc Lesourd on the 17th of November 2017</li>
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</ul>
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<div id="orge067538" class="figure">
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<div id="orgb5022d9" class="figure">
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<p><img src="./figs/accelerometers.png" alt="accelerometers.png" width="500px" />
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</p>
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<p><span class="figure-number">Figure 1: </span>Accelerometers position</p>
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</div>
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||||
<div id="org737c3b9" class="figure">
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||||
<div id="orgaaf63dd" class="figure">
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||||
<p><img src="./figs/instrumented_hammer.png" alt="instrumented_hammer.png" width="500px" />
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||||
</p>
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||||
<p><span class="figure-number">Figure 2: </span>Instrumented Hammer used</p>
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@ -301,11 +346,11 @@ for the JavaScript code in this tag.
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</div>
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</div>
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||||
<div id="outline-container-org2f1a089" class="outline-2">
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||||
<h2 id="org2f1a089"><span class="section-number-2">2</span> Measurements procedure</h2>
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||||
<div id="outline-container-orgbe7bf59" class="outline-2">
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||||
<h2 id="orgbe7bf59"><span class="section-number-2">2</span> Measurements procedure</h2>
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||||
<div class="outline-text-2" id="text-2">
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||||
<p>
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||||
<b>3-axis Accelerometers</b> (specifications table <a href="#org7e5f9c1">1</a>) are glued on (see figure <a href="#orge067538">1</a>):
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||||
<b>3-axis Accelerometers</b> (specifications table <a href="#org2f4877d">1</a>) are glued on (see figure <a href="#orgb5022d9">1</a>):
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||||
</p>
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||||
<ul class="org-ul">
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||||
<li>Marble</li>
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@ -314,7 +359,7 @@ for the JavaScript code in this tag.
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||||
<li>top of Hexapod</li>
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||||
</ul>
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||||
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||||
<table id="org7e5f9c1" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
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||||
<table id="org2f4877d" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
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||||
<caption class="t-above"><span class="table-number">Table 1:</span> Pieozoelectric acc. 356b18 - 3 axis</caption>
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||||
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<colgroup>
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||||
@ -351,7 +396,7 @@ for the JavaScript code in this tag.
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||||
</table>
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||||
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||||
<p>
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||||
The structure is excited using an <b>instrumented hammer</b> with impacts on (see figure <a href="#org737c3b9">2</a>):
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||||
The structure is excited using an <b>instrumented hammer</b> with impacts on (see figure <a href="#orgaaf63dd">2</a>):
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</p>
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<ul class="org-ul">
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||||
<li>Marble</li>
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@ -360,8 +405,8 @@ The structure is excited using an <b>instrumented hammer</b> with impacts on (se
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</div>
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</div>
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<div id="outline-container-orgcb92a24" class="outline-2">
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||||
<h2 id="orgcb92a24"><span class="section-number-2">3</span> Measurement Files</h2>
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||||
<div id="outline-container-org3337380" class="outline-2">
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||||
<h2 id="org3337380"><span class="section-number-2">3</span> Measurement Files</h2>
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||||
<div class="outline-text-2" id="text-3">
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||||
<p>
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||||
Two measurements files are:
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||||
@ -370,7 +415,7 @@ Two measurements files are:
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||||
<li><code>id31_microstation_2017_11_17_frf.mat</code> that contains:
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<ul class="org-ul">
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||||
<li><code>freq_frf</code> the frequency vector in Hz</li>
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||||
<li>Computed frequency response functions (see table <a href="#orgc7a9cf7">2</a>)</li>
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<li>Computed frequency response functions (see table <a href="#org71ee83c">2</a>)</li>
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||||
</ul></li>
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<li><code>id31_microstation_2017_11_17_coh.mat</code>
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<ul class="org-ul">
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||||
@ -379,10 +424,10 @@ Two measurements files are:
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||||
</ul>
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||||
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||||
<p>
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||||
For each of the measurement, the measured channels are shown on table <a href="#org4e93508">3</a>.
|
||||
For each of the measurement, the measured channels are shown on table <a href="#org1bf8383">3</a>.
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||||
</p>
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||||
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||||
<table id="orgc7a9cf7" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
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||||
<table id="org71ee83c" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
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||||
<caption class="t-above"><span class="table-number">Table 2:</span> Description of the location of direction of the excitation for each measurement</caption>
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||||
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<colgroup>
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||||
@ -438,7 +483,7 @@ For each of the measurement, the measured channels are shown on table <a href="#
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||||
</tbody>
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||||
</table>
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||||
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||||
<table id="org4e93508" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
|
||||
<table id="org1bf8383" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
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||||
<caption class="t-above"><span class="table-number">Table 3:</span> Description of each measurement channel</caption>
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||||
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<colgroup>
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@ -554,12 +599,12 @@ For each of the measurement, the measured channels are shown on table <a href="#
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</div>
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||||
</div>
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||||
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||||
<div id="outline-container-orgad05307" class="outline-2">
|
||||
<h2 id="orgad05307"><span class="section-number-2">4</span> Data Analysis</h2>
|
||||
<div id="outline-container-orgc59cdd1" class="outline-2">
|
||||
<h2 id="orgc59cdd1"><span class="section-number-2">4</span> Data Analysis</h2>
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||||
<div class="outline-text-2" id="text-4">
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||||
</div>
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||||
<div id="outline-container-org28e779a" class="outline-3">
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||||
<h3 id="org28e779a"><span class="section-number-3">4.1</span> Loading of the data</h3>
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||||
<div id="outline-container-org97ea2b9" class="outline-3">
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||||
<h3 id="org97ea2b9"><span class="section-number-3">4.1</span> Loading of the data</h3>
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||||
<div class="outline-text-3" id="text-4-1">
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||||
<div class="org-src-container">
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||||
<pre class="src src-matlab">load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./raw_data/id31_microstation_2017_11_17_coh.mat'</span>,<span class="org-underline">...</span>
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||||
@ -583,8 +628,8 @@ load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string
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</div>
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</div>
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||||
<div id="outline-container-orgf5d9ddc" class="outline-3">
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||||
<h3 id="orgf5d9ddc"><span class="section-number-3">4.2</span> Pre-processing of the data</h3>
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||||
<div id="outline-container-org55d35ad" class="outline-3">
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||||
<h3 id="org55d35ad"><span class="section-number-3">4.2</span> Pre-processing of the data</h3>
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<div class="outline-text-3" id="text-4-2">
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||||
<p>
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||||
The FRF data are scaled with the sensitivity of the accelerometer and integrated two times to have the displacement instead of the acceleration.
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||||
@ -606,11 +651,11 @@ frf_marble_z = <span class="org-type">-</span><span class="org-highlight-numbers
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</div>
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||||
</div>
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<div id="outline-container-orgf90fc5f" class="outline-3">
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||||
<h3 id="orgf90fc5f"><span class="section-number-3">4.3</span> X-direction FRF</h3>
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<div id="outline-container-org409f95e" class="outline-3">
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||||
<h3 id="org409f95e"><span class="section-number-3">4.3</span> X-direction FRF</h3>
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||||
<div class="outline-text-3" id="text-4-3">
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<div id="org7ea5cb4" class="figure">
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||||
<div id="org5d69ec3" class="figure">
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||||
<p><img src="figs/marble_x_frf.png" alt="marble_x_frf.png" />
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||||
</p>
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||||
<p><span class="figure-number">Figure 3: </span>Response to a force applied on the marble in the X direction</p>
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||||
@ -618,7 +663,7 @@ frf_marble_z = <span class="org-type">-</span><span class="org-highlight-numbers
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<div id="org55645ce" class="figure">
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<div id="orgf472153" class="figure">
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<p><img src="figs/hexa_x_frf.png" alt="hexa_x_frf.png" />
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||||
</p>
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||||
<p><span class="figure-number">Figure 4: </span>Response to a force applied on the hexa in the X direction</p>
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||||
@ -626,18 +671,18 @@ frf_marble_z = <span class="org-type">-</span><span class="org-highlight-numbers
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||||
</div>
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||||
</div>
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||||
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||||
<div id="outline-container-orgec13f33" class="outline-3">
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||||
<h3 id="orgec13f33"><span class="section-number-3">4.4</span> Y-direction FRF</h3>
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||||
<div id="outline-container-org5ca4365" class="outline-3">
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||||
<h3 id="org5ca4365"><span class="section-number-3">4.4</span> Y-direction FRF</h3>
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||||
<div class="outline-text-3" id="text-4-4">
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||||
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||||
<div id="org8de99f7" class="figure">
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||||
<div id="org8581a20" class="figure">
|
||||
<p><img src="figs/marble_y_frf.png" alt="marble_y_frf.png" />
|
||||
</p>
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||||
<p><span class="figure-number">Figure 5: </span>Response to a force applied on the marble in the Y direction</p>
|
||||
</div>
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||||
|
||||
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||||
<div id="org8506d1b" class="figure">
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||||
<div id="orgdea2e62" class="figure">
|
||||
<p><img src="figs/hexa_y_frf.png" alt="hexa_y_frf.png" />
|
||||
</p>
|
||||
<p><span class="figure-number">Figure 6: </span>Response to a force applied on the hexa in the Y direction</p>
|
||||
@ -645,29 +690,42 @@ frf_marble_z = <span class="org-type">-</span><span class="org-highlight-numbers
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||||
</div>
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||||
</div>
|
||||
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||||
<div id="outline-container-org0696fe4" class="outline-3">
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||||
<h3 id="org0696fe4"><span class="section-number-3">4.5</span> Z-direction FRF</h3>
|
||||
<div id="outline-container-org491a242" class="outline-3">
|
||||
<h3 id="org491a242"><span class="section-number-3">4.5</span> Z-direction FRF</h3>
|
||||
<div class="outline-text-3" id="text-4-5">
|
||||
|
||||
<div id="orgb151cf9" class="figure">
|
||||
<div id="org525b297" class="figure">
|
||||
<p><img src="figs/marble_z_frf.png" alt="marble_z_frf.png" />
|
||||
</p>
|
||||
<p><span class="figure-number">Figure 7: </span>Response to a force applied on the marble in the Z direction</p>
|
||||
</div>
|
||||
|
||||
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||||
<div id="orgfa78f3b" class="figure">
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||||
<div id="orgf376c05" class="figure">
|
||||
<p><img src="figs/hexa_z_frf.png" alt="hexa_z_frf.png" />
|
||||
</p>
|
||||
<p><span class="figure-number">Figure 8: </span>Response to a force applied on the hexa in the Z direction</p>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
<div id="outline-container-orgf03bfb4" class="outline-2">
|
||||
<h2 id="orgf03bfb4"><span class="section-number-2">5</span> Results</h2>
|
||||
<div class="outline-text-2" id="text-5">
|
||||
<div class="important">
|
||||
<ul class="org-ul">
|
||||
<li>Resonances have been identified at 45Hz and 75Hz</li>
|
||||
<li>However, the quality of the measurements are bad at low frequency</li>
|
||||
<li>New measurements should be done with Geophones</li>
|
||||
</ul>
|
||||
|
||||
</div>
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||||
</div>
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||||
</div>
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||||
</div>
|
||||
<div id="postamble" class="status">
|
||||
<p class="author">Author: Thomas Dehaeze</p>
|
||||
<p class="date">Created: 2019-05-10 ven. 09:46</p>
|
||||
<p class="author">Author: Dehaeze Thomas</p>
|
||||
<p class="date">Created: 2019-05-14 mar. 23:06</p>
|
||||
<p class="validation"><a href="http://validator.w3.org/check?uri=referer">Validate</a></p>
|
||||
</div>
|
||||
</body>
|
||||
|
||||
@ -30,6 +30,18 @@
|
||||
:END:
|
||||
|
||||
* Experimental conditions
|
||||
|
||||
| *Date* | 2017-11-17 |
|
||||
| *Sensors* | Accelerometers |
|
||||
| *Excitation* | Instrumented Hammer |
|
||||
| *Location* | Laboratory |
|
||||
|
||||
Dynamics of the station is evaluated using instrumented hammer and accelerometers fixed on each stage.
|
||||
|
||||
*Goal*:
|
||||
- Obtain a first estimation of resonance frequencies
|
||||
|
||||
|
||||
- Measurement made in a metrology lab
|
||||
- The granite is not glued to the floor
|
||||
- The Y-Translation stage is powered and in closed-loop
|
||||
@ -303,3 +315,9 @@ The FRF data are scaled with the sensitivity of the accelerometer and integrated
|
||||
#+CAPTION: Response to a force applied on the hexa in the Z direction
|
||||
#+RESULTS: fig:hexa_z_frf
|
||||
[[file:figs/hexa_z_frf.png]]
|
||||
* Results
|
||||
#+begin_important
|
||||
- Resonances have been identified at 45Hz and 75Hz
|
||||
- However, the quality of the measurements are bad at low frequency
|
||||
- New measurements should be done with Geophones
|
||||
#+end_important
|
||||
|
||||
@ -3,12 +3,12 @@
|
||||
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
<meta name="generator" content="Org mode" />
|
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<meta name="author" content="Thomas Dehaeze" />
|
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|
||||
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|
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|
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.title { text-align: center;
|
||||
@ -195,10 +195,11 @@
|
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|
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@licstart The following is the entire license notice for the
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@ -247,49 +248,92 @@ for the JavaScript code in this tag.
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<a accesskey="h" href="../index.html"> UP </a>
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|
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<a accesskey="H" href="../index.html"> HOME </a>
|
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</div><div id="content">
|
||||
<h1 class="title">Measurements</h1>
|
||||
<div id="table-of-contents">
|
||||
<h2>Table of Contents</h2>
|
||||
<div id="text-table-of-contents">
|
||||
<ul>
|
||||
<li><a href="#orga614698">1. Experimental conditions</a></li>
|
||||
<li><a href="#org5acf69f">2. Measurements procedure</a></li>
|
||||
<li><a href="#orge8576dc">3. Measurement Channels</a></li>
|
||||
<li><a href="#org2abc3a7">4. Experiments</a></li>
|
||||
<li><a href="#org4e35b4e">5. Data Analysis</a>
|
||||
<li><a href="#org27cbd90">1. Experimental conditions</a></li>
|
||||
<li><a href="#orgf2bb684">2. Measurements procedure</a></li>
|
||||
<li><a href="#org604de72">3. Measurement Channels</a></li>
|
||||
<li><a href="#orgee6f009">4. Experiments</a></li>
|
||||
<li><a href="#orgc91528e">5. Data Analysis</a>
|
||||
<ul>
|
||||
<li><a href="#orgaf82586">5.1. Loading and pre-processing of the data</a></li>
|
||||
<li><a href="#orgc8844c5">5.2. X-direction FRF</a></li>
|
||||
<li><a href="#orgcf9ba27">5.3. Y-direction FRF</a></li>
|
||||
<li><a href="#org482e0e7">5.4. Z-direction FRF</a></li>
|
||||
<li><a href="#org64c9d55">5.1. Loading and pre-processing of the data</a></li>
|
||||
<li><a href="#org528d8bd">5.2. X-direction FRF</a></li>
|
||||
<li><a href="#orgb043f14">5.3. Y-direction FRF</a></li>
|
||||
<li><a href="#org63f36f4">5.4. Z-direction FRF</a></li>
|
||||
<li><a href="#org9fd4cff">5.5. Save the processed data</a></li>
|
||||
</ul>
|
||||
</li>
|
||||
<li><a href="#orge5ef1a0">6. Results</a></li>
|
||||
</ul>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<p>
|
||||
<a href="../index.html">Back to main page</a>.
|
||||
</p>
|
||||
|
||||
<div id="outline-container-orga614698" class="outline-2">
|
||||
<h2 id="orga614698"><span class="section-number-2">1</span> Experimental conditions</h2>
|
||||
<div id="outline-container-org27cbd90" class="outline-2">
|
||||
<h2 id="org27cbd90"><span class="section-number-2">1</span> Experimental conditions</h2>
|
||||
<div class="outline-text-2" id="text-1">
|
||||
<table border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
|
||||
|
||||
|
||||
<colgroup>
|
||||
<col class="org-left" />
|
||||
|
||||
<col class="org-left" />
|
||||
</colgroup>
|
||||
<tbody>
|
||||
<tr>
|
||||
<td class="org-left"><b>Date</b></td>
|
||||
<td class="org-left">2018-01-12</td>
|
||||
</tr>
|
||||
|
||||
<tr>
|
||||
<td class="org-left"><b>Sensors</b></td>
|
||||
<td class="org-left">Geophones</td>
|
||||
</tr>
|
||||
|
||||
<tr>
|
||||
<td class="org-left"><b>Excitation</b></td>
|
||||
<td class="org-left">Instrumented Hammer</td>
|
||||
</tr>
|
||||
|
||||
<tr>
|
||||
<td class="org-left"><b>Location</b></td>
|
||||
<td class="org-left">Laboratory</td>
|
||||
</tr>
|
||||
|
||||
<tr>
|
||||
<td class="org-left"><b>Notes</b></td>
|
||||
<td class="org-left">Unglued Granite</td>
|
||||
</tr>
|
||||
</tbody>
|
||||
</table>
|
||||
|
||||
<ul class="org-ul">
|
||||
<li>The granite is not glued to the floor</li>
|
||||
<li>FS = 512Hz</li>
|
||||
<li>Made by Marc Lesourd on the 12 of January 2018</li>
|
||||
</ul>
|
||||
|
||||
<p>
|
||||
<b>Goal</b>:
|
||||
Obtain better coherence at low frequency.
|
||||
</p>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-org5acf69f" class="outline-2">
|
||||
<h2 id="org5acf69f"><span class="section-number-2">2</span> Measurements procedure</h2>
|
||||
<div id="outline-container-orgf2bb684" class="outline-2">
|
||||
<h2 id="orgf2bb684"><span class="section-number-2">2</span> Measurements procedure</h2>
|
||||
<div class="outline-text-2" id="text-2">
|
||||
<p>
|
||||
<b>Geophones</b>
|
||||
L-28LB geophones (table <a href="#org3345ea9">1</a>) are placed on
|
||||
L-28LB geophones (table <a href="#org27c9f01">1</a>) are placed on
|
||||
</p>
|
||||
<ul class="org-ul">
|
||||
<li>Marle</li>
|
||||
@ -297,7 +341,7 @@ L-28LB geophones (table <a href="#org3345ea9">1</a>) are placed on
|
||||
<li>Top of Hexapod</li>
|
||||
</ul>
|
||||
|
||||
<table id="org3345ea9" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
|
||||
<table id="org27c9f01" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
|
||||
<caption class="t-above"><span class="table-number">Table 1:</span> L-28LB Geophone characteristics</caption>
|
||||
|
||||
<colgroup>
|
||||
@ -333,10 +377,10 @@ The structure is excited using an <b>instrumented hammer</b> with impacts on
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-orge8576dc" class="outline-2">
|
||||
<h2 id="orge8576dc"><span class="section-number-2">3</span> Measurement Channels</h2>
|
||||
<div id="outline-container-org604de72" class="outline-2">
|
||||
<h2 id="org604de72"><span class="section-number-2">3</span> Measurement Channels</h2>
|
||||
<div class="outline-text-2" id="text-3">
|
||||
<table id="org462ede7" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
|
||||
<table id="org98c14df" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
|
||||
<caption class="t-above"><span class="table-number">Table 2:</span> Description of each measurement channel</caption>
|
||||
|
||||
<colgroup>
|
||||
@ -390,10 +434,10 @@ The structure is excited using an <b>instrumented hammer</b> with impacts on
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-org2abc3a7" class="outline-2">
|
||||
<h2 id="org2abc3a7"><span class="section-number-2">4</span> Experiments</h2>
|
||||
<div id="outline-container-orgee6f009" class="outline-2">
|
||||
<h2 id="orgee6f009"><span class="section-number-2">4</span> Experiments</h2>
|
||||
<div class="outline-text-2" id="text-4">
|
||||
<table id="orgf9904be" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
|
||||
<table id="orgd57c63a" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
|
||||
<caption class="t-above"><span class="table-number">Table 3:</span> Description of the location of direction of the excitation for each measurement</caption>
|
||||
|
||||
<colgroup>
|
||||
@ -453,12 +497,12 @@ The structure is excited using an <b>instrumented hammer</b> with impacts on
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-org4e35b4e" class="outline-2">
|
||||
<h2 id="org4e35b4e"><span class="section-number-2">5</span> Data Analysis</h2>
|
||||
<div id="outline-container-orgc91528e" class="outline-2">
|
||||
<h2 id="orgc91528e"><span class="section-number-2">5</span> Data Analysis</h2>
|
||||
<div class="outline-text-2" id="text-5">
|
||||
</div>
|
||||
<div id="outline-container-orgaf82586" class="outline-3">
|
||||
<h3 id="orgaf82586"><span class="section-number-3">5.1</span> Loading and pre-processing of the data</h3>
|
||||
<div id="outline-container-org64c9d55" class="outline-3">
|
||||
<h3 id="org64c9d55"><span class="section-number-3">5.1</span> Loading and pre-processing of the data</h3>
|
||||
<div class="outline-text-3" id="text-5-1">
|
||||
<p>
|
||||
The Geophone sensitivity is defined below:
|
||||
@ -467,7 +511,7 @@ The Geophone sensitivity is defined below:
|
||||
<pre class="src src-matlab">w0 = <span class="org-highlight-numbers-number">4</span>.<span class="org-highlight-numbers-number">5</span><span class="org-type">*</span><span class="org-highlight-numbers-number">2</span><span class="org-type">*</span><span class="org-constant">pi</span>; <span class="org-comment">% [rad/s]</span>
|
||||
ksi = <span class="org-highlight-numbers-number">0</span>.<span class="org-highlight-numbers-number">38</span>;
|
||||
G0 = <span class="org-highlight-numbers-number">31</span>.<span class="org-highlight-numbers-number">3</span>; <span class="org-comment">% [V/(m/s)]</span>
|
||||
[Omitted long matching line]
|
||||
G = G0<span class="org-type">*</span><span class="org-rainbow-delimiters-depth-1">(</span>s<span class="org-type">/</span>w0<span class="org-rainbow-delimiters-depth-1">)</span><span class="org-type">^</span><span class="org-highlight-numbers-number">2</span><span class="org-type">/</span><span class="org-rainbow-delimiters-depth-1">(</span><span class="org-rainbow-delimiters-depth-2">(</span>s<span class="org-type">/</span>w0<span class="org-rainbow-delimiters-depth-2">)</span><span class="org-type">^</span><span class="org-highlight-numbers-number">2</span> <span class="org-type">+</span> <span class="org-highlight-numbers-number">2</span><span class="org-type">*</span>ksi<span class="org-type">*</span><span class="org-rainbow-delimiters-depth-2">(</span>s<span class="org-type">/</span>w0<span class="org-rainbow-delimiters-depth-2">)</span> <span class="org-type">+</span> <span class="org-highlight-numbers-number">1</span><span class="org-rainbow-delimiters-depth-1">)</span>; <span class="org-comment">% [V/(m/s)]</span>
|
||||
</pre>
|
||||
</div>
|
||||
|
||||
@ -563,19 +607,83 @@ coh_hexa_z<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-
|
||||
coh_hexa_z<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-type">:</span>, <span class="org-highlight-numbers-number">3</span><span class="org-rainbow-delimiters-depth-1">)</span> = coh6<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-type">:</span>, <span class="org-highlight-numbers-number">4</span><span class="org-rainbow-delimiters-depth-1">)</span>; <span class="org-comment">% hexa_z</span>
|
||||
</pre>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-org528d8bd" class="outline-3">
|
||||
<h3 id="org528d8bd"><span class="section-number-3">5.2</span> X-direction FRF</h3>
|
||||
<div class="outline-text-3" id="text-5-2">
|
||||
|
||||
<div id="orgbe46711" class="figure">
|
||||
<p><img src="figs/marble_x_frf.png" alt="marble_x_frf.png" />
|
||||
</p>
|
||||
<p><span class="figure-number">Figure 1: </span>Response to a force applied on the marble in the X direction</p>
|
||||
</div>
|
||||
|
||||
|
||||
|
||||
<div id="org4005c39" class="figure">
|
||||
<p><img src="figs/hexa_x_frf.png" alt="hexa_x_frf.png" />
|
||||
</p>
|
||||
<p><span class="figure-number">Figure 2: </span>Response to a force applied on the hexa in the X direction</p>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-orgb043f14" class="outline-3">
|
||||
<h3 id="orgb043f14"><span class="section-number-3">5.3</span> Y-direction FRF</h3>
|
||||
<div class="outline-text-3" id="text-5-3">
|
||||
|
||||
<div id="org959d073" class="figure">
|
||||
<p><img src="figs/marble_y_frf.png" alt="marble_y_frf.png" />
|
||||
</p>
|
||||
<p><span class="figure-number">Figure 3: </span>Response to a force applied on the marble in the Y direction</p>
|
||||
</div>
|
||||
|
||||
|
||||
<div id="orge15a0ff" class="figure">
|
||||
<p><img src="figs/hexa_y_frf.png" alt="hexa_y_frf.png" />
|
||||
</p>
|
||||
<p><span class="figure-number">Figure 4: </span>Response to a force applied on the hexa in the Y direction</p>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-org63f36f4" class="outline-3">
|
||||
<h3 id="org63f36f4"><span class="section-number-3">5.4</span> Z-direction FRF</h3>
|
||||
<div class="outline-text-3" id="text-5-4">
|
||||
|
||||
<div id="orgf2ca329" class="figure">
|
||||
<p><img src="figs/marble_z_frf.png" alt="marble_z_frf.png" />
|
||||
</p>
|
||||
<p><span class="figure-number">Figure 5: </span>Response to a force applied on the marble in the Z direction</p>
|
||||
</div>
|
||||
|
||||
|
||||
<div id="orgbb33b62" class="figure">
|
||||
<p><img src="figs/hexa_z_frf.png" alt="hexa_z_frf.png" />
|
||||
</p>
|
||||
<p><span class="figure-number">Figure 6: </span>Response to a force applied on the hexa in the Z direction</p>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
<div id="outline-container-org9fd4cff" class="outline-3">
|
||||
<h3 id="org9fd4cff"><span class="section-number-3">5.5</span> Save the processed data</h3>
|
||||
<div class="outline-text-3" id="text-5-5">
|
||||
<p>
|
||||
Finally, we save the processed data.
|
||||
</p>
|
||||
<div class="org-src-container">
|
||||
<pre class="src src-matlab">save<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/id31_microstation_2018_01_12_frf.mat'</span>, <span class="org-underline">...</span>
|
||||
<span class="org-string">'freq_frf'</span>, <span class="org-underline">...</span>
|
||||
<span class="org-string">'frf_marble_x'</span>, <span class="org-underline">...</span>
|
||||
<span class="org-string">'frf_marble_y'</span>, <span class="org-underline">...</span>
|
||||
<span class="org-string">'frf_marble_z'</span>, <span class="org-underline">...</span>
|
||||
<span class="org-string">'frf_hexa_x'</span>, <span class="org-underline">...</span>
|
||||
<span class="org-string">'frf_hexa_y'</span>, <span class="org-underline">...</span>
|
||||
<span class="org-string">'frf_hexa_z'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
save<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/id31_microstation_2018_01_12_frf.mat'</span>, <span class="org-underline">...</span>
|
||||
save<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/id31_microstation_2018_01_12_coh.mat'</span>, <span class="org-underline">...</span>
|
||||
<span class="org-string">'freq_frf'</span>, <span class="org-underline">...</span>
|
||||
<span class="org-string">'coh_marble_x'</span>, <span class="org-underline">...</span>
|
||||
<span class="org-string">'coh_marble_y'</span>, <span class="org-underline">...</span>
|
||||
<span class="org-string">'coh_marble_z'</span>, <span class="org-underline">...</span>
|
||||
@ -586,69 +694,23 @@ save<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-orgc8844c5" class="outline-3">
|
||||
<h3 id="orgc8844c5"><span class="section-number-3">5.2</span> X-direction FRF</h3>
|
||||
<div class="outline-text-3" id="text-5-2">
|
||||
|
||||
<div id="org46ec177" class="figure">
|
||||
<p><img src="figs/marble_x_frf.png" alt="marble_x_frf.png" />
|
||||
</p>
|
||||
<p><span class="figure-number">Figure 1: </span>Response to a force applied on the marble in the X direction</p>
|
||||
</div>
|
||||
<div id="outline-container-orge5ef1a0" class="outline-2">
|
||||
<h2 id="orge5ef1a0"><span class="section-number-2">6</span> Results</h2>
|
||||
<div class="outline-text-2" id="text-6">
|
||||
<div class="important">
|
||||
<ul class="org-ul">
|
||||
<li>Resonances at 42Hz, 70Hz and 125Hz have been identified</li>
|
||||
<li>The coherence is much better than when using accelerometers</li>
|
||||
</ul>
|
||||
|
||||
|
||||
|
||||
<div id="org1e4d82b" class="figure">
|
||||
<p><img src="figs/hexa_x_frf.png" alt="hexa_x_frf.png" />
|
||||
</p>
|
||||
<p><span class="figure-number">Figure 2: </span>Response to a force applied on the hexa in the X direction</p>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-orgcf9ba27" class="outline-3">
|
||||
<h3 id="orgcf9ba27"><span class="section-number-3">5.3</span> Y-direction FRF</h3>
|
||||
<div class="outline-text-3" id="text-5-3">
|
||||
|
||||
<div id="org259229b" class="figure">
|
||||
<p><img src="figs/marble_y_frf.png" alt="marble_y_frf.png" />
|
||||
</p>
|
||||
<p><span class="figure-number">Figure 3: </span>Response to a force applied on the marble in the Y direction</p>
|
||||
</div>
|
||||
|
||||
|
||||
<div id="org24e7d47" class="figure">
|
||||
<p><img src="figs/hexa_y_frf.png" alt="hexa_y_frf.png" />
|
||||
</p>
|
||||
<p><span class="figure-number">Figure 4: </span>Response to a force applied on the hexa in the Y direction</p>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-org482e0e7" class="outline-3">
|
||||
<h3 id="org482e0e7"><span class="section-number-3">5.4</span> Z-direction FRF</h3>
|
||||
<div class="outline-text-3" id="text-5-4">
|
||||
|
||||
<div id="orgd52f782" class="figure">
|
||||
<p><img src="figs/marble_z_frf.png" alt="marble_z_frf.png" />
|
||||
</p>
|
||||
<p><span class="figure-number">Figure 5: </span>Response to a force applied on the marble in the Z direction</p>
|
||||
</div>
|
||||
|
||||
|
||||
<div id="org142632b" class="figure">
|
||||
<p><img src="figs/hexa_z_frf.png" alt="hexa_z_frf.png" />
|
||||
</p>
|
||||
<p><span class="figure-number">Figure 6: </span>Response to a force applied on the hexa in the Z direction</p>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
<div id="postamble" class="status">
|
||||
<p class="author">Author: Thomas Dehaeze</p>
|
||||
<p class="date">Created: 2019-04-15 lun. 13:12</p>
|
||||
<p class="author">Author: Dehaeze Thomas</p>
|
||||
<p class="date">Created: 2019-05-14 mar. 23:06</p>
|
||||
<p class="validation"><a href="http://validator.w3.org/check?uri=referer">Validate</a></p>
|
||||
</div>
|
||||
</body>
|
||||
|
||||
@ -30,10 +30,20 @@
|
||||
:END:
|
||||
|
||||
* Experimental conditions
|
||||
|
||||
| *Date* | 2018-01-12 |
|
||||
| *Sensors* | Geophones |
|
||||
| *Excitation* | Instrumented Hammer |
|
||||
| *Location* | Laboratory |
|
||||
| *Notes* | Unglued Granite |
|
||||
|
||||
- The granite is not glued to the floor
|
||||
- FS = 512Hz
|
||||
- Made by Marc Lesourd on the 12 of January 2018
|
||||
|
||||
*Goal*:
|
||||
Obtain better coherence at low frequency.
|
||||
|
||||
* Measurements procedure
|
||||
*Geophones*
|
||||
L-28LB geophones (table [[tab:L-28LB]]) are placed on
|
||||
@ -348,3 +358,8 @@ Finally, we save the processed data.
|
||||
'coh_hexa_y', ...
|
||||
'coh_hexa_z');
|
||||
#+end_src
|
||||
* Results
|
||||
#+begin_important
|
||||
- Resonances at 42Hz, 70Hz and 125Hz have been identified
|
||||
- The coherence is much better than when using accelerometers
|
||||
#+end_important
|
||||
|
||||
@ -3,12 +3,12 @@
|
||||
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
|
||||
<head>
|
||||
<!-- 2019-03-15 ven. 11:42 -->
|
||||
<!-- 2019-05-14 mar. 23:06 -->
|
||||
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1" />
|
||||
<title>Measurements</title>
|
||||
<meta name="generator" content="Org mode" />
|
||||
<meta name="author" content="Thomas Dehaeze" />
|
||||
<meta name="author" content="Dehaeze Thomas" />
|
||||
<style type="text/css">
|
||||
<!--/*--><![CDATA[/*><!--*/
|
||||
.title { text-align: center;
|
||||
@ -195,10 +195,11 @@
|
||||
</style>
|
||||
<link rel="stylesheet" type="text/css" href="../css/htmlize.css"/>
|
||||
<link rel="stylesheet" type="text/css" href="../css/readtheorg.css"/>
|
||||
<script src="../js/jquery.min.js"></script>
|
||||
<script src="../js/bootstrap.min.js"></script>
|
||||
<script src="../js/jquery.stickytableheaders.min.js"></script>
|
||||
<script src="../js/readtheorg.js"></script>
|
||||
<link rel="stylesheet" type="text/css" href="../css/zenburn.css"/>
|
||||
<script type="text/javascript" src="../js/jquery.min.js"></script>
|
||||
<script type="text/javascript" src="../js/bootstrap.min.js"></script>
|
||||
<script type="text/javascript" src="../js/jquery.stickytableheaders.min.js"></script>
|
||||
<script type="text/javascript" src="../js/readtheorg.js"></script>
|
||||
<script type="text/javascript">
|
||||
/*
|
||||
@licstart The following is the entire license notice for the
|
||||
@ -247,52 +248,91 @@ for the JavaScript code in this tag.
|
||||
</script>
|
||||
</head>
|
||||
<body>
|
||||
<div id="content">
|
||||
<div id="org-div-home-and-up">
|
||||
<a accesskey="h" href="../index.html"> UP </a>
|
||||
|
|
||||
<a accesskey="H" href="../index.html"> HOME </a>
|
||||
</div><div id="content">
|
||||
<h1 class="title">Measurements</h1>
|
||||
<div id="table-of-contents">
|
||||
<h2>Table of Contents</h2>
|
||||
<div id="text-table-of-contents">
|
||||
<ul>
|
||||
<li><a href="#org767b001">1. Experimental conditions</a></li>
|
||||
<li><a href="#org96ab348">2. Measurements procedure</a></li>
|
||||
<li><a href="#orgabd7c2d">3. Measurement Channels</a></li>
|
||||
<li><a href="#org2674a8b">4. Experiments</a></li>
|
||||
<li><a href="#org35fdd83">5. Data Analysis</a>
|
||||
<li><a href="#orga941937">1. Experimental conditions</a></li>
|
||||
<li><a href="#org0a36397">2. Measurements procedure</a></li>
|
||||
<li><a href="#org9c8604e">3. Measurement Channels</a></li>
|
||||
<li><a href="#org3ee1fb7">4. Experiments</a></li>
|
||||
<li><a href="#orgaf6691c">5. Data Analysis</a>
|
||||
<ul>
|
||||
<li><a href="#org1a91184">5.1. Loading of the data</a></li>
|
||||
<li><a href="#orge954440">5.1. Loading of the data</a></li>
|
||||
</ul>
|
||||
</li>
|
||||
</ul>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<p>
|
||||
<a href="../index.html">Back to main page</a>.
|
||||
</p>
|
||||
|
||||
<div id="outline-container-org767b001" class="outline-2">
|
||||
<h2 id="org767b001"><span class="section-number-2">1</span> Experimental conditions</h2>
|
||||
<div id="outline-container-orga941937" class="outline-2">
|
||||
<h2 id="orga941937"><span class="section-number-2">1</span> Experimental conditions</h2>
|
||||
<div class="outline-text-2" id="text-1">
|
||||
<ul class="org-ul">
|
||||
<li>Measurement made in the experiment hutch</li>
|
||||
<li>FS=256Hz</li>
|
||||
<li>Made by Marc Lesourd on the 12 of October 2018</li>
|
||||
</ul>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-org96ab348" class="outline-2">
|
||||
<h2 id="org96ab348"><span class="section-number-2">2</span> Measurements procedure</h2>
|
||||
<div class="outline-text-2" id="text-2">
|
||||
<table border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
|
||||
|
||||
|
||||
<colgroup>
|
||||
<col class="org-left" />
|
||||
|
||||
<col class="org-left" />
|
||||
</colgroup>
|
||||
<tbody>
|
||||
<tr>
|
||||
<td class="org-left"><b>Date</b></td>
|
||||
<td class="org-left">2018-10-12</td>
|
||||
</tr>
|
||||
|
||||
<tr>
|
||||
<td class="org-left"><b>Sensors</b></td>
|
||||
<td class="org-left">Geophones</td>
|
||||
</tr>
|
||||
|
||||
<tr>
|
||||
<td class="org-left"><b>Excitation</b></td>
|
||||
<td class="org-left">Instrumented Hammer</td>
|
||||
</tr>
|
||||
|
||||
<tr>
|
||||
<td class="org-left"><b>Location</b></td>
|
||||
<td class="org-left">Experimental Hutch</td>
|
||||
</tr>
|
||||
</tbody>
|
||||
</table>
|
||||
|
||||
<p>
|
||||
8 <b>Geophone</b> are used (see table <a href="#org17f9936">3</a>):
|
||||
<b>Goal</b>:
|
||||
</p>
|
||||
<ul class="org-ul">
|
||||
<li>7 L-28LB geophones (table <a href="#orgad8b1e1">1</a>)</li>
|
||||
<li>1 L-4C geophone (table <a href="#org02884d4">2</a>)</li>
|
||||
<li>The station is now installed on the experimental hutch with a glued granite (final location).</li>
|
||||
<li>The station is identified again.</li>
|
||||
</ul>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-org0a36397" class="outline-2">
|
||||
<h2 id="org0a36397"><span class="section-number-2">2</span> Measurements procedure</h2>
|
||||
<div class="outline-text-2" id="text-2">
|
||||
<p>
|
||||
8 <b>Geophone</b> are used (see table <a href="#org84ab1ff">3</a>):
|
||||
</p>
|
||||
<ul class="org-ul">
|
||||
<li>7 L-28LB geophones (table <a href="#org4eafe61">1</a>)</li>
|
||||
<li>1 L-4C geophone (table <a href="#org1f04e75">2</a>)</li>
|
||||
</ul>
|
||||
|
||||
<table id="orgad8b1e1" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
|
||||
<table id="org4eafe61" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
|
||||
<caption class="t-above"><span class="table-number">Table 1:</span> L-28LB Geophone characteristics</caption>
|
||||
|
||||
<colgroup>
|
||||
@ -318,7 +358,7 @@ for the JavaScript code in this tag.
|
||||
</tbody>
|
||||
</table>
|
||||
|
||||
<table id="org02884d4" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
|
||||
<table id="org1f04e75" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
|
||||
<caption class="t-above"><span class="table-number">Table 2:</span> L-4C Geophone characteristics</caption>
|
||||
|
||||
<colgroup>
|
||||
@ -345,7 +385,7 @@ for the JavaScript code in this tag.
|
||||
</table>
|
||||
|
||||
<p>
|
||||
The structure is excited using an <b>instrumented hammer</b> with impacts on (see table <a href="#org6d4c491">4</a>):
|
||||
The structure is excited using an <b>instrumented hammer</b> with impacts on (see table <a href="#orgd034fab">4</a>):
|
||||
</p>
|
||||
<ul class="org-ul">
|
||||
<li>Marble</li>
|
||||
@ -355,14 +395,14 @@ The structure is excited using an <b>instrumented hammer</b> with impacts on (se
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-orgabd7c2d" class="outline-2">
|
||||
<h2 id="orgabd7c2d"><span class="section-number-2">3</span> Measurement Channels</h2>
|
||||
<div id="outline-container-org9c8604e" class="outline-2">
|
||||
<h2 id="org9c8604e"><span class="section-number-2">3</span> Measurement Channels</h2>
|
||||
<div class="outline-text-2" id="text-3">
|
||||
<p>
|
||||
Les fichiers xxx<sub>raw</sub> sont sans traitement dans le domaine temporel (environ 10 impacts par fichier)
|
||||
</p>
|
||||
|
||||
<table id="org17f9936" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
|
||||
<table id="org84ab1ff" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
|
||||
<caption class="t-above"><span class="table-number">Table 3:</span> Description of each measurement channel</caption>
|
||||
|
||||
<colgroup>
|
||||
@ -451,10 +491,10 @@ Les fichiers xxx<sub>raw</sub> sont sans traitement dans le domaine temporel (en
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-org2674a8b" class="outline-2">
|
||||
<h2 id="org2674a8b"><span class="section-number-2">4</span> Experiments</h2>
|
||||
<div id="outline-container-org3ee1fb7" class="outline-2">
|
||||
<h2 id="org3ee1fb7"><span class="section-number-2">4</span> Experiments</h2>
|
||||
<div class="outline-text-2" id="text-4">
|
||||
<table id="org6d4c491" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
|
||||
<table id="orgd034fab" border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
|
||||
<caption class="t-above"><span class="table-number">Table 4:</span> Description of the location of direction of the excitation for each measurement</caption>
|
||||
|
||||
<colgroup>
|
||||
@ -532,39 +572,39 @@ Les fichiers xxx<sub>raw</sub> sont sans traitement dans le domaine temporel (en
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-org35fdd83" class="outline-2">
|
||||
<h2 id="org35fdd83"><span class="section-number-2">5</span> Data Analysis</h2>
|
||||
<div id="outline-container-orgaf6691c" class="outline-2">
|
||||
<h2 id="orgaf6691c"><span class="section-number-2">5</span> Data Analysis</h2>
|
||||
<div class="outline-text-2" id="text-5">
|
||||
</div>
|
||||
<div id="outline-container-org1a91184" class="outline-3">
|
||||
<h3 id="org1a91184"><span class="section-number-3">5.1</span> Loading of the data</h3>
|
||||
<div id="outline-container-orge954440" class="outline-3">
|
||||
<h3 id="orge954440"><span class="section-number-3">5.1</span> Loading of the data</h3>
|
||||
<div class="outline-text-3" id="text-5-1">
|
||||
<div class="org-src-container">
|
||||
<pre class="src src-matlab">load<span style="color: #DCDCCC;">(</span><span style="color: #CC9393;">'./data/freq_frf.mat'</span><span style="color: #DCDCCC;">)</span>;
|
||||
<pre class="src src-matlab">load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/freq_frf.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
|
||||
load<span style="color: #DCDCCC;">(</span><span style="color: #CC9393;">'./data/frf_hexa_x.mat'</span><span style="color: #DCDCCC;">)</span>;
|
||||
load<span style="color: #DCDCCC;">(</span><span style="color: #CC9393;">'./data/frf_hexa_y.mat'</span><span style="color: #DCDCCC;">)</span>;
|
||||
load<span style="color: #DCDCCC;">(</span><span style="color: #CC9393;">'./data/frf_hexa_z.mat'</span><span style="color: #DCDCCC;">)</span>;
|
||||
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/frf_hexa_x.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/frf_hexa_y.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/frf_hexa_z.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
|
||||
load<span style="color: #DCDCCC;">(</span><span style="color: #CC9393;">'./data/frf_marble_x.mat'</span><span style="color: #DCDCCC;">)</span>;
|
||||
load<span style="color: #DCDCCC;">(</span><span style="color: #CC9393;">'./data/frf_marble_y.mat'</span><span style="color: #DCDCCC;">)</span>;
|
||||
load<span style="color: #DCDCCC;">(</span><span style="color: #CC9393;">'./data/frf_marble_z.mat'</span><span style="color: #DCDCCC;">)</span>;
|
||||
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/frf_marble_x.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/frf_marble_y.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/frf_marble_z.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
|
||||
load<span style="color: #DCDCCC;">(</span><span style="color: #CC9393;">'./data/frf_ty_x.mat'</span><span style="color: #DCDCCC;">)</span>;
|
||||
load<span style="color: #DCDCCC;">(</span><span style="color: #CC9393;">'./data/frf_ty_y.mat'</span><span style="color: #DCDCCC;">)</span>;
|
||||
load<span style="color: #DCDCCC;">(</span><span style="color: #CC9393;">'./data/frf_ty_z.mat'</span><span style="color: #DCDCCC;">)</span>;
|
||||
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/frf_ty_x.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/frf_ty_y.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/frf_ty_z.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
|
||||
load<span style="color: #DCDCCC;">(</span><span style="color: #CC9393;">'./data/phs_hexa_x.mat'</span><span style="color: #DCDCCC;">)</span>;
|
||||
load<span style="color: #DCDCCC;">(</span><span style="color: #CC9393;">'./data/phs_hexa_y.mat'</span><span style="color: #DCDCCC;">)</span>;
|
||||
load<span style="color: #DCDCCC;">(</span><span style="color: #CC9393;">'./data/phs_hexa_z.mat'</span><span style="color: #DCDCCC;">)</span>;
|
||||
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/phs_hexa_x.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/phs_hexa_y.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/phs_hexa_z.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
|
||||
load<span style="color: #DCDCCC;">(</span><span style="color: #CC9393;">'./data/phs_marble_x.mat'</span><span style="color: #DCDCCC;">)</span>;
|
||||
load<span style="color: #DCDCCC;">(</span><span style="color: #CC9393;">'./data/phs_marble_y.mat'</span><span style="color: #DCDCCC;">)</span>;
|
||||
load<span style="color: #DCDCCC;">(</span><span style="color: #CC9393;">'./data/phs_marble_z.mat'</span><span style="color: #DCDCCC;">)</span>;
|
||||
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/phs_marble_x.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/phs_marble_y.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/phs_marble_z.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
|
||||
load<span style="color: #DCDCCC;">(</span><span style="color: #CC9393;">'./data/phs_ty_x.mat'</span><span style="color: #DCDCCC;">)</span>;
|
||||
load<span style="color: #DCDCCC;">(</span><span style="color: #CC9393;">'./data/phs_ty_y.mat'</span><span style="color: #DCDCCC;">)</span>;
|
||||
load<span style="color: #DCDCCC;">(</span><span style="color: #CC9393;">'./data/phs_ty_z.mat'</span><span style="color: #DCDCCC;">)</span>;
|
||||
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/phs_ty_x.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/phs_ty_y.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'./data/phs_ty_z.mat'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
</pre>
|
||||
</div>
|
||||
</div>
|
||||
@ -572,8 +612,8 @@ load<span style="color: #DCDCCC;">(</span><span style="color: #CC9393;">'./data/
|
||||
</div>
|
||||
</div>
|
||||
<div id="postamble" class="status">
|
||||
<p class="author">Author: Thomas Dehaeze</p>
|
||||
<p class="date">Created: 2019-03-15 ven. 11:42</p>
|
||||
<p class="author">Author: Dehaeze Thomas</p>
|
||||
<p class="date">Created: 2019-05-14 mar. 23:06</p>
|
||||
<p class="validation"><a href="http://validator.w3.org/check?uri=referer">Validate</a></p>
|
||||
</div>
|
||||
</body>
|
||||
|
||||
@ -34,6 +34,15 @@
|
||||
- FS=256Hz
|
||||
- Made by Marc Lesourd on the 12 of October 2018
|
||||
|
||||
| *Date* | 2018-10-12 |
|
||||
| *Sensors* | Geophones |
|
||||
| *Excitation* | Instrumented Hammer |
|
||||
| *Location* | Experimental Hutch |
|
||||
|
||||
*Goal*:
|
||||
- The station is now installed on the experimental hutch with a glued granite (final location).
|
||||
- The station is identified again.
|
||||
|
||||
* Measurements procedure
|
||||
8 *Geophone* are used (see table [[tab:meas_channels]]):
|
||||
- 7 L-28LB geophones (table [[tab:L-28LB]])
|
||||
|
||||
262
index.html
262
index.html
@ -3,7 +3,7 @@
|
||||
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
|
||||
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
|
||||
<head>
|
||||
<!-- 2019-05-14 mar. 23:02 -->
|
||||
<!-- 2019-05-14 mar. 23:06 -->
|
||||
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1" />
|
||||
<title>Measurement of the ID31 Micro-Station</title>
|
||||
@ -254,33 +254,9 @@ for the JavaScript code in this tag.
|
||||
<h2>Table of Contents</h2>
|
||||
<div id="text-table-of-contents">
|
||||
<ul>
|
||||
<li><a href="#org3dd37ca">1. Measurements of the dynamics of the station</a>
|
||||
<ul>
|
||||
<li><a href="#orgc6a04a7">1.1. Measurement 1</a>
|
||||
<ul>
|
||||
<li><a href="#org3d7d31e">1.1.1. Notes</a></li>
|
||||
<li><a href="#org6f222a5">1.1.2. Goal</a></li>
|
||||
<li><a href="#org66caa3c">1.1.3. Results</a></li>
|
||||
</ul>
|
||||
</li>
|
||||
<li><a href="#orga240707">1.2. Measurement 2</a>
|
||||
<ul>
|
||||
<li><a href="#org6750c68">1.2.1. Notes</a></li>
|
||||
<li><a href="#org514680e">1.2.2. Goal</a></li>
|
||||
<li><a href="#orga1029fa">1.2.3. Results</a></li>
|
||||
</ul>
|
||||
</li>
|
||||
<li><a href="#org0266a1b">1.3. <span class="todo TODO">TODO</span> Measurement 3</a>
|
||||
<ul>
|
||||
<li><a href="#org3a059d2">1.3.1. Notes</a></li>
|
||||
<li><a href="#org8fec9e8">1.3.2. Goal</a></li>
|
||||
<li><a href="#org638b982">1.3.3. Results</a></li>
|
||||
</ul>
|
||||
</li>
|
||||
</ul>
|
||||
</li>
|
||||
<li><a href="#orge16cbdc">2. Measurements of perturbations</a></li>
|
||||
<li><a href="#org7e1127d">3. Other</a></li>
|
||||
<li><a href="#orgee0a061">1. Measurements of the dynamics of the station</a></li>
|
||||
<li><a href="#org439949d">2. Measurements of perturbations</a></li>
|
||||
<li><a href="#org77887a7">3. Other</a></li>
|
||||
</ul>
|
||||
</div>
|
||||
</div>
|
||||
@ -289,233 +265,25 @@ for the JavaScript code in this tag.
|
||||
This web-page gathers all the measurements done on the ID31 Micro Station.
|
||||
</p>
|
||||
|
||||
<div id="outline-container-org3dd37ca" class="outline-2">
|
||||
<h2 id="org3dd37ca"><span class="section-number-2">1</span> Measurements of the dynamics of the station</h2>
|
||||
<div id="outline-container-orgee0a061" class="outline-2">
|
||||
<h2 id="orgee0a061"><span class="section-number-2">1</span> Measurements of the dynamics of the station</h2>
|
||||
<div class="outline-text-2" id="text-1">
|
||||
<ul class="org-ul">
|
||||
<li><a href="dynamical-meas-granite/index.html">Dynamics from floor motion to marble motion</a></li>
|
||||
</ul>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-orgc6a04a7" class="outline-3">
|
||||
<h3 id="orgc6a04a7"><span class="section-number-3">1.1</span> Measurement 1</h3>
|
||||
<div class="outline-text-3" id="text-1-1">
|
||||
<p>
|
||||
<a href="2017-11-17 - Marc/index.html">Link to the analysis</a>
|
||||
</p>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-org3d7d31e" class="outline-4">
|
||||
<h4 id="org3d7d31e"><span class="section-number-4">1.1.1</span> Notes</h4>
|
||||
<div class="outline-text-4" id="text-1-1-1">
|
||||
<table border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
|
||||
|
||||
|
||||
<colgroup>
|
||||
<col class="org-left" />
|
||||
|
||||
<col class="org-left" />
|
||||
</colgroup>
|
||||
<tbody>
|
||||
<tr>
|
||||
<td class="org-left"><b>Date</b></td>
|
||||
<td class="org-left">2017-11-17</td>
|
||||
</tr>
|
||||
|
||||
<tr>
|
||||
<td class="org-left"><b>Sensors</b></td>
|
||||
<td class="org-left">Accelerometers</td>
|
||||
</tr>
|
||||
|
||||
<tr>
|
||||
<td class="org-left"><b>Excitation</b></td>
|
||||
<td class="org-left">Instrumented Hammer</td>
|
||||
</tr>
|
||||
|
||||
<tr>
|
||||
<td class="org-left"><b>Location</b></td>
|
||||
<td class="org-left">Laboratory</td>
|
||||
</tr>
|
||||
</tbody>
|
||||
</table>
|
||||
|
||||
<p>
|
||||
Dynamics of the station is evaluated using instrumented hammer and accelerometers fixed on each stage.
|
||||
</p>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-org6f222a5" class="outline-4">
|
||||
<h4 id="org6f222a5"><span class="section-number-4">1.1.2</span> Goal</h4>
|
||||
<div class="outline-text-4" id="text-1-1-2">
|
||||
<ul class="org-ul">
|
||||
<li>Obtain a first estimation of resonance frequencies</li>
|
||||
<li><a href="2017-11-17 - Marc/index.html">Measurement of the dynamics of the station using intrumented hammer and accelerometers</a></li>
|
||||
<li><a href="2018-01-12 - Marc/index.html">Measurement of the dynamics of the station using intrumented hammer and geophones</a></li>
|
||||
<li><a href="2018-10-12 - Marc/index.html">Measurement of the dyanamics - Micro station glued on ID31</a></li>
|
||||
</ul>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-org66caa3c" class="outline-4">
|
||||
<h4 id="org66caa3c"><span class="section-number-4">1.1.3</span> Results</h4>
|
||||
<div class="outline-text-4" id="text-1-1-3">
|
||||
<div class="important">
|
||||
<ul class="org-ul">
|
||||
<li>Resonances have been identified at 45Hz and 75Hz</li>
|
||||
<li>However, the quality of the measurements are bad at low frequency</li>
|
||||
<li>New measurements should be done with Geophones</li>
|
||||
</ul>
|
||||
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-orga240707" class="outline-3">
|
||||
<h3 id="orga240707"><span class="section-number-3">1.2</span> Measurement 2</h3>
|
||||
<div class="outline-text-3" id="text-1-2">
|
||||
<p>
|
||||
<a href="2018-01-12 - Marc/index.html">Link to the analysis</a>
|
||||
</p>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-org6750c68" class="outline-4">
|
||||
<h4 id="org6750c68"><span class="section-number-4">1.2.1</span> Notes</h4>
|
||||
<div class="outline-text-4" id="text-1-2-1">
|
||||
<table border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
|
||||
|
||||
|
||||
<colgroup>
|
||||
<col class="org-left" />
|
||||
|
||||
<col class="org-left" />
|
||||
</colgroup>
|
||||
<tbody>
|
||||
<tr>
|
||||
<td class="org-left"><b>Date</b></td>
|
||||
<td class="org-left">2018-01-12</td>
|
||||
</tr>
|
||||
|
||||
<tr>
|
||||
<td class="org-left"><b>Sensors</b></td>
|
||||
<td class="org-left">Geophones</td>
|
||||
</tr>
|
||||
|
||||
<tr>
|
||||
<td class="org-left"><b>Excitation</b></td>
|
||||
<td class="org-left">Instrumented Hammer</td>
|
||||
</tr>
|
||||
|
||||
<tr>
|
||||
<td class="org-left"><b>Location</b></td>
|
||||
<td class="org-left">Laboratory</td>
|
||||
</tr>
|
||||
|
||||
<tr>
|
||||
<td class="org-left"><b>Notes</b></td>
|
||||
<td class="org-left">Unglued Granite</td>
|
||||
</tr>
|
||||
</tbody>
|
||||
</table>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-org514680e" class="outline-4">
|
||||
<h4 id="org514680e"><span class="section-number-4">1.2.2</span> Goal</h4>
|
||||
<div class="outline-text-4" id="text-1-2-2">
|
||||
<p>
|
||||
Obtain better coherence at low frequency.
|
||||
</p>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-orga1029fa" class="outline-4">
|
||||
<h4 id="orga1029fa"><span class="section-number-4">1.2.3</span> Results</h4>
|
||||
<div class="outline-text-4" id="text-1-2-3">
|
||||
<div class="important">
|
||||
<ul class="org-ul">
|
||||
<li>Resonances at 42Hz, 70Hz and 125Hz have been identified</li>
|
||||
<li>The coherence is much better than when using accelerometers</li>
|
||||
</ul>
|
||||
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-org0266a1b" class="outline-3">
|
||||
<h3 id="org0266a1b"><span class="section-number-3">1.3</span> <span class="todo TODO">TODO</span> Measurement 3</h3>
|
||||
<div class="outline-text-3" id="text-1-3">
|
||||
<p>
|
||||
<a href="2018-10-12 - Marc/index.html">Link to the analysis</a>
|
||||
</p>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-org3a059d2" class="outline-4">
|
||||
<h4 id="org3a059d2"><span class="section-number-4">1.3.1</span> Notes</h4>
|
||||
<div class="outline-text-4" id="text-1-3-1">
|
||||
<table border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
|
||||
|
||||
|
||||
<colgroup>
|
||||
<col class="org-left" />
|
||||
|
||||
<col class="org-left" />
|
||||
</colgroup>
|
||||
<tbody>
|
||||
<tr>
|
||||
<td class="org-left"><b>Date</b></td>
|
||||
<td class="org-left">2018-10-12</td>
|
||||
</tr>
|
||||
|
||||
<tr>
|
||||
<td class="org-left"><b>Sensors</b></td>
|
||||
<td class="org-left">Geophones</td>
|
||||
</tr>
|
||||
|
||||
<tr>
|
||||
<td class="org-left"><b>Excitation</b></td>
|
||||
<td class="org-left">Instrumented Hammer</td>
|
||||
</tr>
|
||||
|
||||
<tr>
|
||||
<td class="org-left"><b>Location</b></td>
|
||||
<td class="org-left">Experimental Hutch</td>
|
||||
</tr>
|
||||
</tbody>
|
||||
</table>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-org8fec9e8" class="outline-4">
|
||||
<h4 id="org8fec9e8"><span class="section-number-4">1.3.2</span> Goal</h4>
|
||||
<div class="outline-text-4" id="text-1-3-2">
|
||||
<p>
|
||||
The station is now installed on the experimental hutch with a glued granite (final location).
|
||||
The station is identified again.
|
||||
</p>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-org638b982" class="outline-4">
|
||||
<h4 id="org638b982"><span class="section-number-4">1.3.3</span> Results</h4>
|
||||
<div class="outline-text-4" id="text-1-3-3">
|
||||
<div class="important">
|
||||
<p>
|
||||
|
||||
</p>
|
||||
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-orge16cbdc" class="outline-2">
|
||||
<h2 id="orge16cbdc"><span class="section-number-2">2</span> Measurements of perturbations</h2>
|
||||
<div id="outline-container-org439949d" class="outline-2">
|
||||
<h2 id="org439949d"><span class="section-number-2">2</span> Measurements of perturbations</h2>
|
||||
<div class="outline-text-2" id="text-2">
|
||||
<ul class="org-ul">
|
||||
<li><a href="disturbance-sr-rz/index.html">Measurement of the vibrations induced by the rotation of the slip-ring and spindle</a></li>
|
||||
<li><a href="disturbance-ty-sr/index.html">Measurement of the vibrations induced by the simultaneous rotation of the slip-ring and scan of the translation stage</a></li>
|
||||
<li><a href="disturbance-measurement/index.html">Disturbance Measurement - Spindle</a> TODO</li>
|
||||
<li><a href="disturbance-measurement/index.html">Disturbance Measurement - Spindle</a></li>
|
||||
<li><a href="slip-ring-electrical-noise/index.html">Measurement of the electrical noise induced by the slip-ring</a></li>
|
||||
<li><a href="ground-motion/index.html">Ground motion measurements</a></li>
|
||||
<li><a href="static-to-dynamic/index.html">Static guiding errors - Ty</a></li>
|
||||
@ -527,8 +295,8 @@ The station is identified again.
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-org7e1127d" class="outline-2">
|
||||
<h2 id="org7e1127d"><span class="section-number-2">3</span> Other</h2>
|
||||
<div id="outline-container-org77887a7" class="outline-2">
|
||||
<h2 id="org77887a7"><span class="section-number-2">3</span> Other</h2>
|
||||
<div class="outline-text-2" id="text-3">
|
||||
<ul class="org-ul">
|
||||
<li><a href="huddle-test-geophones/index.html">Huddle Test - Geophones</a></li>
|
||||
@ -544,7 +312,7 @@ The station is identified again.
|
||||
</div>
|
||||
<div id="postamble" class="status">
|
||||
<p class="author">Author: Thomas Dehaeze</p>
|
||||
<p class="date">Created: 2019-05-14 mar. 23:02</p>
|
||||
<p class="date">Created: 2019-05-14 mar. 23:06</p>
|
||||
<p class="validation"><a href="http://validator.w3.org/check?uri=referer">Validate</a></p>
|
||||
</div>
|
||||
</body>
|
||||
|
||||
63
index.org
63
index.org
@ -15,69 +15,14 @@ This web-page gathers all the measurements done on the ID31 Micro Station.
|
||||
|
||||
* Measurements of the dynamics of the station
|
||||
- [[file:dynamical-meas-granite/index.org][Dynamics from floor motion to marble motion]]
|
||||
|
||||
** Measurement 1
|
||||
[[file:2017-11-17%20-%20Marc/index.org][Link to the analysis]]
|
||||
|
||||
*** Notes
|
||||
| *Date* | 2017-11-17 |
|
||||
| *Sensors* | Accelerometers |
|
||||
| *Excitation* | Instrumented Hammer |
|
||||
| *Location* | Laboratory |
|
||||
|
||||
Dynamics of the station is evaluated using instrumented hammer and accelerometers fixed on each stage.
|
||||
|
||||
*** Goal
|
||||
- Obtain a first estimation of resonance frequencies
|
||||
|
||||
*** Results
|
||||
#+begin_important
|
||||
- Resonances have been identified at 45Hz and 75Hz
|
||||
- However, the quality of the measurements are bad at low frequency
|
||||
- New measurements should be done with Geophones
|
||||
#+end_important
|
||||
|
||||
** Measurement 2
|
||||
[[file:2018-01-12%20-%20Marc/index.org][Link to the analysis]]
|
||||
|
||||
*** Notes
|
||||
| *Date* | 2018-01-12 |
|
||||
| *Sensors* | Geophones |
|
||||
| *Excitation* | Instrumented Hammer |
|
||||
| *Location* | Laboratory |
|
||||
| *Notes* | Unglued Granite |
|
||||
|
||||
*** Goal
|
||||
Obtain better coherence at low frequency.
|
||||
|
||||
*** Results
|
||||
#+begin_important
|
||||
- Resonances at 42Hz, 70Hz and 125Hz have been identified
|
||||
- The coherence is much better than when using accelerometers
|
||||
#+end_important
|
||||
|
||||
** TODO Measurement 3
|
||||
[[file:2018-10-12%20-%20Marc/index.org][Link to the analysis]]
|
||||
|
||||
*** Notes
|
||||
| *Date* | 2018-10-12 |
|
||||
| *Sensors* | Geophones |
|
||||
| *Excitation* | Instrumented Hammer |
|
||||
| *Location* | Experimental Hutch |
|
||||
|
||||
*** Goal
|
||||
The station is now installed on the experimental hutch with a glued granite (final location).
|
||||
The station is identified again.
|
||||
|
||||
*** Results
|
||||
#+begin_important
|
||||
|
||||
#+end_important
|
||||
- [[file:2017-11-17%20-%20Marc/index.org][Measurement of the dynamics of the station using intrumented hammer and accelerometers]]
|
||||
- [[file:2018-01-12%20-%20Marc/index.org][Measurement of the dynamics of the station using intrumented hammer and geophones]]
|
||||
- [[file:2018-10-12%20-%20Marc/index.org][Measurement of the dyanamics - Micro station glued on ID31]]
|
||||
|
||||
* Measurements of perturbations
|
||||
- [[file:disturbance-sr-rz/index.org][Measurement of the vibrations induced by the rotation of the slip-ring and spindle]]
|
||||
- [[file:disturbance-ty-sr/index.org][Measurement of the vibrations induced by the simultaneous rotation of the slip-ring and scan of the translation stage]]
|
||||
- [[file:disturbance-measurement/index.org][Disturbance Measurement - Spindle]] TODO
|
||||
- [[file:disturbance-measurement/index.org][Disturbance Measurement - Spindle]]
|
||||
- [[file:slip-ring-electrical-noise/index.org][Measurement of the electrical noise induced by the slip-ring]]
|
||||
- [[file:ground-motion/index.org][Ground motion measurements]]
|
||||
- [[file:static-to-dynamic/index.org][Static guiding errors - Ty]]
|
||||
|
||||
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Reference in New Issue
Block a user