tdehaeze/nass-micro-station-measurements
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Update some measurements analysis

Browse Source
This commit is contained in:
Thomas Dehaeze 2019-05-13 22:36:14 +02:00
parent 299c7336df
commit a93e8fe4ae
7 changed files with 1440 additions and 1051 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
index.org
View File

@ -74,7 +74,7 @@ The station is identified again.
* Measurements of perturbations
- [[file:slip-ring-spindle-vibrations/index.org][Measurement of the vibrations induced by the rotation of the slip-ring and spindle]]
- Measurement of the electrical noise induced by the slip-ring
- [[file:slip-ring-electrical-noise/index.org][Measurement of the electrical noise induced by the slip-ring]]
** Noise coming from the control loop of each stage
[[file:2018-10-15%20-%20Marc/index.org][Link to the analysis]]

BIN
slip-ring-electrical-noise/figs/slipring_asd.png
View File

Binary file not shown.
Side by Side Swipe Overlay

Before

Width:  |  Height:  |  Size: 110 KiB

After

Width:  |  Height:  |  Size: 118 KiB

BIN
slip-ring-electrical-noise/figs/slipring_time.png
View File

Binary file not shown.
Side by Side Swipe Overlay

Before

Width:  |  Height:  |  Size: 62 KiB

After

Width:  |  Height:  |  Size: 66 KiB

1403
slip-ring-electrical-noise/index.html
View File

File diff suppressed because it is too large Load Diff

942
slip-ring-electrical-noise/index.org
View File

File diff suppressed because it is too large Load Diff

129
slip-ring-spindle-vibrations/index.html
View File

@ -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>
<!-- 2019-05-13 lun. 13:19 -->
<!-- 2019-05-13 lun. 13:24 -->
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>Vibrations induced by the Slip-Ring and the Spindle</title>
@ -258,21 +258,21 @@ for the JavaScript code in this tag.
<h2>Table of Contents</h2>
<div id="text-table-of-contents">
<ul>
<li><a href="#org8c69ce5">1. Experimental Setup</a></li>
<li><a href="#orgf453912">2. Data Analysis</a>
<li><a href="#org371ff02">1. Experimental Setup</a></li>
<li><a href="#orgecddaf0">2. Data Analysis</a>
<ul>
<li><a href="#org9872101">2.1. Load data</a></li>
<li><a href="#org2ae0836">2.2. Time domain plots</a></li>
<li><a href="#org679ca5d">2.3. Frequency Domain</a></li>
<li><a href="#org122a9b6">2.4. Conclusion</a></li>
<li><a href="#orgc4627de">2.1. Load data</a></li>
<li><a href="#orgb8a6467">2.2. Time domain plots</a></li>
<li><a href="#org27d9d17">2.3. Frequency Domain</a></li>
<li><a href="#org6127e14">2.4. Conclusion</a></li>
</ul>
</li>
</ul>
</div>
</div>
<div id="outline-container-org8c69ce5" class="outline-2">
<h2 id="org8c69ce5"><span class="section-number-2">1</span> Experimental Setup</h2>
<div id="outline-container-org371ff02" class="outline-2">
<h2 id="org371ff02"><span class="section-number-2">1</span> Experimental Setup</h2>
<div class="outline-text-2" id="text-1">
<p>
All the stages are OFF.
@ -309,18 +309,79 @@ A first order low pass filter is also added at the input of the voltage amplifie
<p>
Three measurements are done:
</p>
<ul class="org-ul">
<li><code>mat/data_024.mat</code>: All the stages are OFF</li>
<li><code>mat/data_025.mat</code>: The slip-ring is ON and rotates at 6rpm. The spindle is OFF</li>
<li><code>mat/data_026.mat</code>: The slip-ring and spindle are both ON. They are both turning at 6rpm</li>
</ul>
<table border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup>
<col class="org-left" />
<col class="org-left" />
</colgroup>
<thead>
<tr>
<th scope="col" class="org-left">Measurement File</th>
<th scope="col" class="org-left">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="org-left"><code>mat/data_024.mat</code></td>
<td class="org-left">All the stages are OFF</td>
</tr>
<tr>
<td class="org-left"><code>mat/data_025.mat</code></td>
<td class="org-left">The slip-ring is ON and rotates at 6rpm. The spindle is OFF</td>
</tr>
<tr>
<td class="org-left"><code>mat/data_026.mat</code></td>
<td class="org-left">The slip-ring and spindle are both ON. They are both turning at 6rpm</td>
</tr>
</tbody>
</table>
<p>
A movie showing the experiment is shown on figure <a href="#org02e3283">1</a>.
Each of the measurement <code>mat</code> file contains one <code>data</code> array with 3 columns:
</p>
<table border="2" cellspacing="0" cellpadding="6" rules="groups" frame="hsides">
<colgroup>
<col class="org-right" />
<col class="org-left" />
</colgroup>
<thead>
<tr>
<th scope="col" class="org-right">Column number</th>
<th scope="col" class="org-left">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="org-right">1</td>
<td class="org-left">Geophone - Marble</td>
</tr>
<tr>
<td class="org-right">2</td>
<td class="org-left">Geophone - Sample</td>
</tr>
<tr>
<td class="org-right">3</td>
<td class="org-left">Time</td>
</tr>
</tbody>
</table>
<p>
A movie showing the experiment is shown on figure <a href="#orgc3a4296">1</a>.
</p>
<div id="org02e3283" class="figure">
<div id="orgc3a4296" class="figure">
<p><img src="./img/VID_20190510_155655.gif" alt="VID_20190510_155655.gif" width="300px" />
</p>
<p><span class="figure-number">Figure 1: </span>Movie of the experiment, rotation speed is 6rpm</p>
@ -328,11 +389,11 @@ A movie showing the experiment is shown on figure <a href="#org02e3283">1</a>.
</div>
</div>
<div id="outline-container-orgf453912" class="outline-2">
<h2 id="orgf453912"><span class="section-number-2">2</span> Data Analysis</h2>
<div id="outline-container-orgecddaf0" class="outline-2">
<h2 id="orgecddaf0"><span class="section-number-2">2</span> Data Analysis</h2>
<div class="outline-text-2" id="text-2">
<p>
<a id="org611d277"></a>
<a id="orgc194b61"></a>
</p>
<div class="note">
@ -343,8 +404,8 @@ All the files (data and Matlab scripts) are accessible <a href="data/spindle_sli
</div>
</div>
<div id="outline-container-org9872101" class="outline-3">
<h3 id="org9872101"><span class="section-number-3">2.1</span> Load data</h3>
<div id="outline-container-orgc4627de" class="outline-3">
<h3 id="orgc4627de"><span class="section-number-3">2.1</span> Load data</h3>
<div class="outline-text-3" id="text-2-1">
<div class="org-src-container">
<pre class="src src-matlab">of = load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'mat/data_024.mat', 'data'</span><span class="org-rainbow-delimiters-depth-1">)</span>; of = of.data;
@ -355,8 +416,8 @@ sp = load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-s
</div>
</div>
<div id="outline-container-org2ae0836" class="outline-3">
<h3 id="org2ae0836"><span class="section-number-3">2.2</span> Time domain plots</h3>
<div id="outline-container-orgb8a6467" class="outline-3">
<h3 id="orgb8a6467"><span class="section-number-3">2.2</span> Time domain plots</h3>
<div class="outline-text-3" id="text-2-2">
<div class="org-src-container">
<pre class="src src-matlab"><span class="org-type">figure</span>;
@ -372,7 +433,7 @@ legend<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-stri
</div>
<div id="orgacbbef6" class="figure">
<div id="org914392c" class="figure">
<p><img src="figs/slip_ring_spindle_marble_time.png" alt="slip_ring_spindle_marble_time.png" />
</p>
<p><span class="figure-number">Figure 2: </span>Measurement of the geophone located on the marble - Time domain</p>
@ -392,7 +453,7 @@ legend<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-stri
</div>
<div id="org17ed71b" class="figure">
<div id="orge34f253" class="figure">
<p><img src="figs/slip_ring_spindle_sample_time.png" alt="slip_ring_spindle_sample_time.png" />
</p>
<p><span class="figure-number">Figure 3: </span>Measurement of the geophone at the sample location - Time domain</p>
@ -400,8 +461,8 @@ legend<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-stri
</div>
</div>
<div id="outline-container-org679ca5d" class="outline-3">
<h3 id="org679ca5d"><span class="section-number-3">2.3</span> Frequency Domain</h3>
<div id="outline-container-org27d9d17" class="outline-3">
<h3 id="org27d9d17"><span class="section-number-3">2.3</span> Frequency Domain</h3>
<div class="outline-text-3" id="text-2-3">
<p>
We first compute some parameters that will be used for the PSD computation.
@ -443,8 +504,8 @@ And for the geophone located at the sample position.
And we plot the ASD of the measured signals:
</p>
<ul class="org-ul">
<li>figure <a href="#org9c0e002">4</a> for the geophone located on the marble</li>
<li>figure <a href="#orgfbccecc">5</a> for the geophone at the sample position</li>
<li>figure <a href="#orgf453585">4</a> for the geophone located on the marble</li>
<li>figure <a href="#org3aa1b94">5</a> for the geophone at the sample position</li>
</ul>
<div class="org-src-container">
@ -463,7 +524,7 @@ xlim<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-rainbo
</div>
<div id="org9c0e002" class="figure">
<div id="orgf453585" class="figure">
<p><img src="figs/sr_sp_psd_marble_compare.png" alt="sr_sp_psd_marble_compare.png" />
</p>
<p><span class="figure-number">Figure 4: </span>Comparison of the ASD of the measured voltage from the Geophone on the marble</p>
@ -485,7 +546,7 @@ xlim<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-rainbo
</div>
<div id="orgfbccecc" class="figure">
<div id="org3aa1b94" class="figure">
<p><img src="figs/sr_sp_psd_sample_compare.png" alt="sr_sp_psd_sample_compare.png" />
</p>
<p><span class="figure-number">Figure 5: </span>Comparison of the ASD of the measured voltage from the Geophone at the sample location</p>
@ -493,8 +554,8 @@ xlim<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-rainbo
</div>
</div>
<div id="outline-container-org122a9b6" class="outline-3">
<h3 id="org122a9b6"><span class="section-number-3">2.4</span> Conclusion</h3>
<div id="outline-container-org6127e14" class="outline-3">
<h3 id="org6127e14"><span class="section-number-3">2.4</span> Conclusion</h3>
<div class="outline-text-3" id="text-2-4">
<div class="important">
<p>
@ -513,7 +574,7 @@ There is a huge peak at 24Hz on the sample vibration but not on the granite vibr
</div>
<div id="postamble" class="status">
<p class="author">Author: Dehaeze Thomas</p>
<p class="date">Created: 2019-05-13 lun. 13:19</p>
<p class="date">Created: 2019-05-13 lun. 13:24</p>
<p class="validation"><a href="http://validator.w3.org/check?uri=referer">Validate</a></p>
</div>
</body>

15
slip-ring-spindle-vibrations/index.org
View File

@ -19,9 +19,18 @@ A first order low pass filter is also added at the input of the voltage amplifie
- Identify the vibrations induced by the rotation of the Slip-Ring and Spindle
Three measurements are done:
- =mat/data_024.mat=: All the stages are OFF
- =mat/data_025.mat=: The slip-ring is ON and rotates at 6rpm. The spindle is OFF
- =mat/data_026.mat=: The slip-ring and spindle are both ON. They are both turning at 6rpm
| Measurement File | Description |
|--------------------+----------------------------------------------------------------------|
| =mat/data_024.mat= | All the stages are OFF |
| =mat/data_025.mat= | The slip-ring is ON and rotates at 6rpm. The spindle is OFF |
| =mat/data_026.mat= | The slip-ring and spindle are both ON. They are both turning at 6rpm |
Each of the measurement =mat= file contains one =data= array with 3 columns:
| Column number | Description |
|---------------+-------------------|
| 1 | Geophone - Marble |
| 2 | Geophone - Sample |
| 3 | Time |
A movie showing the experiment is shown on figure [[fig:exp_sl_sp_gif]].