Renamed one folder. Add analysis of vibrations when rotating
This commit is contained in:
tdehaeze committed
1 parent
ab2f2fae08
commit
7ae17e7a60
70 files changed
+839
-5
No files matched your search
@@ -73,6 +73,9 @@ The station is identified again.
|
||||
#+end_important
|
||||
|
||||
* 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
|
||||
|
||||
** Noise coming from the control loop of each stage
|
||||
[[file:2018-10-15%20-%20Marc/index.org][Link to the analysis]]
|
||||
|
||||
@@ -135,12 +138,11 @@ The goal is to estimate all the error motions induced by the Spindle
|
||||
|
||||
*** Results
|
||||
|
||||
* Ressources
|
||||
- [[file:actuators-sensors/index.org][Actuators and Sensors]]
|
||||
- [[file:equipment/equipment.org][Equipment used for the measurements]]
|
||||
|
||||
* Other measurements
|
||||
- [[file:huddle-test-geophones/index.org][Huddle Test - Geophones]]
|
||||
- [[file:disturbance-measurement/index.org][Disturbance Measurement]]
|
||||
- [[file:slip-ring-test/index.org][Slip Ring - Noise measurement]]
|
||||
- [[file:static-measurements/index.org][Control System Measurement]]
|
||||
* Ressources
|
||||
- [[file:actuators-sensors/index.org][Actuators and Sensors]]
|
||||
- [[file:equipment/equipment.org][Equipment used for the measurements]]
|
||||
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
@@ -289,6 +289,7 @@ We now look at the difference between the signal directly measured by the ADC an
|
||||
- Should the measurement be redone using voltage amplifiers?
|
||||
- Use higher rotation speed and measure for longer periods (to have multiple revolutions) ?
|
||||
#+end_note
|
||||
|
||||
* Measure of the noise induced by the Slip-Ring
|
||||
:PROPERTIES:
|
||||
:header-args:matlab+: :tangle matlab/meas_slip_ring.m
|
||||
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
File renamed without changes.
@@ -88,4 +88,3 @@ Measurements:
|
||||
- meas21: Slip-Ring ON
|
||||
- meas22: Slip-Ring ON and omega=6rpm
|
||||
- meas23: Slip-Ring ON and omega=60rpm
|
||||
|
||||
Binary file not shown.
|
After Width: | Height: | Size: 39 KiB |
Binary file not shown.
|
After Width: | Height: | Size: 49 KiB |
Binary file not shown.
|
After Width: | Height: | Size: 58 KiB |
Binary file not shown.
|
After Width: | Height: | Size: 157 KiB |
Binary file not shown.
|
After Width: | Height: | Size: 170 KiB |
Binary file not shown.
|
After Width: | Height: | Size: 169 KiB |
Binary file not shown.
|
After Width: | Height: | Size: 160 KiB |
Binary file not shown.
|
After Width: | Height: | Size: 169 KiB |
Binary file not shown.
|
After Width: | Height: | Size: 17 MiB |
Binary file not shown.
@@ -0,0 +1,520 @@
|
||||
<?xml version="1.0" encoding="utf-8"?>
|
||||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
|
||||
"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 -->
|
||||
<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>
|
||||
<meta name="generator" content="Org mode" />
|
||||
<meta name="author" content="Dehaeze Thomas" />
|
||||
<style type="text/css">
|
||||
<!--/*--><![CDATA[/*><!--*/
|
||||
.title { text-align: center;
|
||||
margin-bottom: .2em; }
|
||||
.subtitle { text-align: center;
|
||||
font-size: medium;
|
||||
font-weight: bold;
|
||||
margin-top:0; }
|
||||
.todo { font-family: monospace; color: red; }
|
||||
.done { font-family: monospace; color: green; }
|
||||
.priority { font-family: monospace; color: orange; }
|
||||
.tag { background-color: #eee; font-family: monospace;
|
||||
padding: 2px; font-size: 80%; font-weight: normal; }
|
||||
.timestamp { color: #bebebe; }
|
||||
.timestamp-kwd { color: #5f9ea0; }
|
||||
.org-right { margin-left: auto; margin-right: 0px; text-align: right; }
|
||||
.org-left { margin-left: 0px; margin-right: auto; text-align: left; }
|
||||
.org-center { margin-left: auto; margin-right: auto; text-align: center; }
|
||||
.underline { text-decoration: underline; }
|
||||
#postamble p, #preamble p { font-size: 90%; margin: .2em; }
|
||||
p.verse { margin-left: 3%; }
|
||||
pre {
|
||||
border: 1px solid #ccc;
|
||||
box-shadow: 3px 3px 3px #eee;
|
||||
padding: 8pt;
|
||||
font-family: monospace;
|
||||
overflow: auto;
|
||||
margin: 1.2em;
|
||||
}
|
||||
pre.src {
|
||||
position: relative;
|
||||
overflow: visible;
|
||||
padding-top: 1.2em;
|
||||
}
|
||||
pre.src:before {
|
||||
display: none;
|
||||
position: absolute;
|
||||
background-color: white;
|
||||
top: -10px;
|
||||
right: 10px;
|
||||
padding: 3px;
|
||||
border: 1px solid black;
|
||||
}
|
||||
pre.src:hover:before { display: inline;}
|
||||
/* Languages per Org manual */
|
||||
pre.src-asymptote:before { content: 'Asymptote'; }
|
||||
pre.src-awk:before { content: 'Awk'; }
|
||||
pre.src-C:before { content: 'C'; }
|
||||
/* pre.src-C++ doesn't work in CSS */
|
||||
pre.src-clojure:before { content: 'Clojure'; }
|
||||
pre.src-css:before { content: 'CSS'; }
|
||||
pre.src-D:before { content: 'D'; }
|
||||
pre.src-ditaa:before { content: 'ditaa'; }
|
||||
pre.src-dot:before { content: 'Graphviz'; }
|
||||
pre.src-calc:before { content: 'Emacs Calc'; }
|
||||
pre.src-emacs-lisp:before { content: 'Emacs Lisp'; }
|
||||
pre.src-fortran:before { content: 'Fortran'; }
|
||||
pre.src-gnuplot:before { content: 'gnuplot'; }
|
||||
pre.src-haskell:before { content: 'Haskell'; }
|
||||
pre.src-hledger:before { content: 'hledger'; }
|
||||
pre.src-java:before { content: 'Java'; }
|
||||
pre.src-js:before { content: 'Javascript'; }
|
||||
pre.src-latex:before { content: 'LaTeX'; }
|
||||
pre.src-ledger:before { content: 'Ledger'; }
|
||||
pre.src-lisp:before { content: 'Lisp'; }
|
||||
pre.src-lilypond:before { content: 'Lilypond'; }
|
||||
pre.src-lua:before { content: 'Lua'; }
|
||||
pre.src-matlab:before { content: 'MATLAB'; }
|
||||
pre.src-mscgen:before { content: 'Mscgen'; }
|
||||
pre.src-ocaml:before { content: 'Objective Caml'; }
|
||||
pre.src-octave:before { content: 'Octave'; }
|
||||
pre.src-org:before { content: 'Org mode'; }
|
||||
pre.src-oz:before { content: 'OZ'; }
|
||||
pre.src-plantuml:before { content: 'Plantuml'; }
|
||||
pre.src-processing:before { content: 'Processing.js'; }
|
||||
pre.src-python:before { content: 'Python'; }
|
||||
pre.src-R:before { content: 'R'; }
|
||||
pre.src-ruby:before { content: 'Ruby'; }
|
||||
pre.src-sass:before { content: 'Sass'; }
|
||||
pre.src-scheme:before { content: 'Scheme'; }
|
||||
pre.src-screen:before { content: 'Gnu Screen'; }
|
||||
pre.src-sed:before { content: 'Sed'; }
|
||||
pre.src-sh:before { content: 'shell'; }
|
||||
pre.src-sql:before { content: 'SQL'; }
|
||||
pre.src-sqlite:before { content: 'SQLite'; }
|
||||
/* additional languages in org.el's org-babel-load-languages alist */
|
||||
pre.src-forth:before { content: 'Forth'; }
|
||||
pre.src-io:before { content: 'IO'; }
|
||||
pre.src-J:before { content: 'J'; }
|
||||
pre.src-makefile:before { content: 'Makefile'; }
|
||||
pre.src-maxima:before { content: 'Maxima'; }
|
||||
pre.src-perl:before { content: 'Perl'; }
|
||||
pre.src-picolisp:before { content: 'Pico Lisp'; }
|
||||
pre.src-scala:before { content: 'Scala'; }
|
||||
pre.src-shell:before { content: 'Shell Script'; }
|
||||
pre.src-ebnf2ps:before { content: 'ebfn2ps'; }
|
||||
/* additional language identifiers per "defun org-babel-execute"
|
||||
in ob-*.el */
|
||||
pre.src-cpp:before { content: 'C++'; }
|
||||
pre.src-abc:before { content: 'ABC'; }
|
||||
pre.src-coq:before { content: 'Coq'; }
|
||||
pre.src-groovy:before { content: 'Groovy'; }
|
||||
/* additional language identifiers from org-babel-shell-names in
|
||||
ob-shell.el: ob-shell is the only babel language using a lambda to put
|
||||
the execution function name together. */
|
||||
pre.src-bash:before { content: 'bash'; }
|
||||
pre.src-csh:before { content: 'csh'; }
|
||||
pre.src-ash:before { content: 'ash'; }
|
||||
pre.src-dash:before { content: 'dash'; }
|
||||
pre.src-ksh:before { content: 'ksh'; }
|
||||
pre.src-mksh:before { content: 'mksh'; }
|
||||
pre.src-posh:before { content: 'posh'; }
|
||||
/* Additional Emacs modes also supported by the LaTeX listings package */
|
||||
pre.src-ada:before { content: 'Ada'; }
|
||||
pre.src-asm:before { content: 'Assembler'; }
|
||||
pre.src-caml:before { content: 'Caml'; }
|
||||
pre.src-delphi:before { content: 'Delphi'; }
|
||||
pre.src-html:before { content: 'HTML'; }
|
||||
pre.src-idl:before { content: 'IDL'; }
|
||||
pre.src-mercury:before { content: 'Mercury'; }
|
||||
pre.src-metapost:before { content: 'MetaPost'; }
|
||||
pre.src-modula-2:before { content: 'Modula-2'; }
|
||||
pre.src-pascal:before { content: 'Pascal'; }
|
||||
pre.src-ps:before { content: 'PostScript'; }
|
||||
pre.src-prolog:before { content: 'Prolog'; }
|
||||
pre.src-simula:before { content: 'Simula'; }
|
||||
pre.src-tcl:before { content: 'tcl'; }
|
||||
pre.src-tex:before { content: 'TeX'; }
|
||||
pre.src-plain-tex:before { content: 'Plain TeX'; }
|
||||
pre.src-verilog:before { content: 'Verilog'; }
|
||||
pre.src-vhdl:before { content: 'VHDL'; }
|
||||
pre.src-xml:before { content: 'XML'; }
|
||||
pre.src-nxml:before { content: 'XML'; }
|
||||
/* add a generic configuration mode; LaTeX export needs an additional
|
||||
(add-to-list 'org-latex-listings-langs '(conf " ")) in .emacs */
|
||||
pre.src-conf:before { content: 'Configuration File'; }
|
||||
|
||||
table { border-collapse:collapse; }
|
||||
caption.t-above { caption-side: top; }
|
||||
caption.t-bottom { caption-side: bottom; }
|
||||
td, th { vertical-align:top; }
|
||||
th.org-right { text-align: center; }
|
||||
th.org-left { text-align: center; }
|
||||
th.org-center { text-align: center; }
|
||||
td.org-right { text-align: right; }
|
||||
td.org-left { text-align: left; }
|
||||
td.org-center { text-align: center; }
|
||||
dt { font-weight: bold; }
|
||||
.footpara { display: inline; }
|
||||
.footdef { margin-bottom: 1em; }
|
||||
.figure { padding: 1em; }
|
||||
.figure p { text-align: center; }
|
||||
.equation-container {
|
||||
display: table;
|
||||
text-align: center;
|
||||
width: 100%;
|
||||
}
|
||||
.equation {
|
||||
vertical-align: middle;
|
||||
}
|
||||
.equation-label {
|
||||
display: table-cell;
|
||||
text-align: right;
|
||||
vertical-align: middle;
|
||||
}
|
||||
.inlinetask {
|
||||
padding: 10px;
|
||||
border: 2px solid gray;
|
||||
margin: 10px;
|
||||
background: #ffffcc;
|
||||
}
|
||||
#org-div-home-and-up
|
||||
{ text-align: right; font-size: 70%; white-space: nowrap; }
|
||||
textarea { overflow-x: auto; }
|
||||
.linenr { font-size: smaller }
|
||||
.code-highlighted { background-color: #ffff00; }
|
||||
.org-info-js_info-navigation { border-style: none; }
|
||||
#org-info-js_console-label
|
||||
{ font-size: 10px; font-weight: bold; white-space: nowrap; }
|
||||
.org-info-js_search-highlight
|
||||
{ background-color: #ffff00; color: #000000; font-weight: bold; }
|
||||
.org-svg { width: 90%; }
|
||||
/*]]>*/-->
|
||||
</style>
|
||||
<link rel="stylesheet" type="text/css" href="../css/htmlize.css"/>
|
||||
<link rel="stylesheet" type="text/css" href="../css/readtheorg.css"/>
|
||||
<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
|
||||
JavaScript code in this tag.
|
||||
|
||||
Copyright (C) 2012-2019 Free Software Foundation, Inc.
|
||||
|
||||
The JavaScript code in this tag is free software: you can
|
||||
redistribute it and/or modify it under the terms of the GNU
|
||||
General Public License (GNU GPL) as published by the Free Software
|
||||
Foundation, either version 3 of the License, or (at your option)
|
||||
any later version. The code is distributed WITHOUT ANY WARRANTY;
|
||||
without even the implied warranty of MERCHANTABILITY or FITNESS
|
||||
FOR A PARTICULAR PURPOSE. See the GNU GPL for more details.
|
||||
|
||||
As additional permission under GNU GPL version 3 section 7, you
|
||||
may distribute non-source (e.g., minimized or compacted) forms of
|
||||
that code without the copy of the GNU GPL normally required by
|
||||
section 4, provided you include this license notice and a URL
|
||||
through which recipients can access the Corresponding Source.
|
||||
|
||||
|
||||
@licend The above is the entire license notice
|
||||
for the JavaScript code in this tag.
|
||||
*/
|
||||
<!--/*--><![CDATA[/*><!--*/
|
||||
function CodeHighlightOn(elem, id)
|
||||
{
|
||||
var target = document.getElementById(id);
|
||||
if(null != target) {
|
||||
elem.cacheClassElem = elem.className;
|
||||
elem.cacheClassTarget = target.className;
|
||||
target.className = "code-highlighted";
|
||||
elem.className = "code-highlighted";
|
||||
}
|
||||
}
|
||||
function CodeHighlightOff(elem, id)
|
||||
{
|
||||
var target = document.getElementById(id);
|
||||
if(elem.cacheClassElem)
|
||||
elem.className = elem.cacheClassElem;
|
||||
if(elem.cacheClassTarget)
|
||||
target.className = elem.cacheClassTarget;
|
||||
}
|
||||
/*]]>*///-->
|
||||
</script>
|
||||
</head>
|
||||
<body>
|
||||
<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">Vibrations induced by the Slip-Ring and the Spindle</h1>
|
||||
<div id="table-of-contents">
|
||||
<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>
|
||||
<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>
|
||||
</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 class="outline-text-2" id="text-1">
|
||||
<p>
|
||||
All the stages are OFF.
|
||||
</p>
|
||||
|
||||
<p>
|
||||
Two geophone are use:
|
||||
</p>
|
||||
<ul class="org-ul">
|
||||
<li>One on the marble (corresponding to the first column in the data)</li>
|
||||
<li>One at the sample location (corresponding to the second column in the data)</li>
|
||||
</ul>
|
||||
|
||||
<p>
|
||||
Two voltage amplifiers are used, their setup is:
|
||||
</p>
|
||||
<ul class="org-ul">
|
||||
<li>gain of 60dB</li>
|
||||
<li>AC/DC switch on AC</li>
|
||||
<li>Low pass filter at 1kHz</li>
|
||||
</ul>
|
||||
|
||||
<p>
|
||||
A first order low pass filter is also added at the input of the voltage amplifiers.
|
||||
</p>
|
||||
|
||||
<p>
|
||||
<b>Goal</b>:
|
||||
</p>
|
||||
<ul class="org-ul">
|
||||
<li>Identify the vibrations induced by the rotation of the Slip-Ring and Spindle</li>
|
||||
</ul>
|
||||
|
||||
<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>
|
||||
|
||||
<p>
|
||||
A movie showing the experiment is shown on figure <a href="#org02e3283">1</a>.
|
||||
</p>
|
||||
|
||||
|
||||
<div id="org02e3283" 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>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-orgf453912" class="outline-2">
|
||||
<h2 id="orgf453912"><span class="section-number-2">2</span> Data Analysis</h2>
|
||||
<div class="outline-text-2" id="text-2">
|
||||
<p>
|
||||
<a id="org611d277"></a>
|
||||
</p>
|
||||
|
||||
<div class="note">
|
||||
<p>
|
||||
All the files (data and Matlab scripts) are accessible <a href="data/spindle_slip_ring_vibrations.zip">here</a>.
|
||||
</p>
|
||||
|
||||
</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 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;
|
||||
sr = load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'mat/data_025.mat', 'data'</span><span class="org-rainbow-delimiters-depth-1">)</span>; sr = sr.data;
|
||||
sp = load<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'mat/data_026.mat', 'data'</span><span class="org-rainbow-delimiters-depth-1">)</span>; sp = sp.data;
|
||||
</pre>
|
||||
</div>
|
||||
</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 class="outline-text-3" id="text-2-2">
|
||||
<div class="org-src-container">
|
||||
<pre class="src src-matlab"><span class="org-type">figure</span>;
|
||||
hold on;
|
||||
plot<span class="org-rainbow-delimiters-depth-1">(</span>sp<span class="org-rainbow-delimiters-depth-2">(</span><span class="org-type">:</span>, <span class="org-highlight-numbers-number">3</span><span class="org-rainbow-delimiters-depth-2">)</span>, sp<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-2">)</span>, 'DisplayName', 'Spindle <span class="org-type">-</span> <span class="org-highlight-numbers-number">6rpm</span>'<span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
plot<span class="org-rainbow-delimiters-depth-1">(</span>sr<span class="org-rainbow-delimiters-depth-2">(</span><span class="org-type">:</span>, <span class="org-highlight-numbers-number">3</span><span class="org-rainbow-delimiters-depth-2">)</span>, sr<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-2">)</span>, 'DisplayName', 'Slip<span class="org-type">-</span>Ring <span class="org-type">-</span> <span class="org-highlight-numbers-number">6rpm</span>'<span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
plot<span class="org-rainbow-delimiters-depth-1">(</span>of<span class="org-rainbow-delimiters-depth-2">(</span><span class="org-type">:</span>, <span class="org-highlight-numbers-number">3</span><span class="org-rainbow-delimiters-depth-2">)</span>, of<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-2">)</span>, <span class="org-string">'DisplayName', 'OFF'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
hold off;
|
||||
xlabel<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'Time </span><span class="org-string"><span class="org-rainbow-delimiters-depth-2">[</span></span><span class="org-string">s</span><span class="org-string"><span class="org-rainbow-delimiters-depth-2">]</span></span><span class="org-string">'</span><span class="org-string"><span class="org-rainbow-delimiters-depth-1">)</span></span><span class="org-string">; ylabel</span><span class="org-string"><span class="org-rainbow-delimiters-depth-1">(</span></span><span class="org-string">'Voltage </span><span class="org-string"><span class="org-rainbow-delimiters-depth-2">[</span></span><span class="org-string">V</span><span class="org-string"><span class="org-rainbow-delimiters-depth-2">]</span></span><span class="org-string">'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
xlim<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-rainbow-delimiters-depth-2">[</span><span class="org-highlight-numbers-number">0</span>, <span class="org-highlight-numbers-number">100</span><span class="org-rainbow-delimiters-depth-2">]</span><span class="org-rainbow-delimiters-depth-1">)</span>; ylim<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-rainbow-delimiters-depth-2">[</span><span class="org-type">-</span><span class="org-highlight-numbers-number">10</span> <span class="org-highlight-numbers-number">10</span><span class="org-rainbow-delimiters-depth-2">]</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
legend<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'Location', 'northeast'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
</pre>
|
||||
</div>
|
||||
|
||||
|
||||
<div id="orgacbbef6" 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>
|
||||
</div>
|
||||
|
||||
<div class="org-src-container">
|
||||
<pre class="src src-matlab"><span class="org-type">figure</span>;
|
||||
hold on;
|
||||
plot<span class="org-rainbow-delimiters-depth-1">(</span>sp<span class="org-rainbow-delimiters-depth-2">(</span><span class="org-type">:</span>, <span class="org-highlight-numbers-number">3</span><span class="org-rainbow-delimiters-depth-2">)</span>, sp<span class="org-rainbow-delimiters-depth-2">(</span><span class="org-type">:</span>, <span class="org-highlight-numbers-number">2</span><span class="org-rainbow-delimiters-depth-2">)</span>, <span class="org-string">'DisplayName', 'Spindle and Slip-Ring'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
plot<span class="org-rainbow-delimiters-depth-1">(</span>sr<span class="org-rainbow-delimiters-depth-2">(</span><span class="org-type">:</span>, <span class="org-highlight-numbers-number">3</span><span class="org-rainbow-delimiters-depth-2">)</span>, sr<span class="org-rainbow-delimiters-depth-2">(</span><span class="org-type">:</span>, <span class="org-highlight-numbers-number">2</span><span class="org-rainbow-delimiters-depth-2">)</span>, <span class="org-string">'DisplayName', 'Only Slip-Ring'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
plot<span class="org-rainbow-delimiters-depth-1">(</span>of<span class="org-rainbow-delimiters-depth-2">(</span><span class="org-type">:</span>, <span class="org-highlight-numbers-number">3</span><span class="org-rainbow-delimiters-depth-2">)</span>, of<span class="org-rainbow-delimiters-depth-2">(</span><span class="org-type">:</span>, <span class="org-highlight-numbers-number">2</span><span class="org-rainbow-delimiters-depth-2">)</span>, <span class="org-string">'DisplayName', 'OFF'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
hold off;
|
||||
xlabel<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'Time </span><span class="org-string"><span class="org-rainbow-delimiters-depth-2">[</span></span><span class="org-string">s</span><span class="org-string"><span class="org-rainbow-delimiters-depth-2">]</span></span><span class="org-string">'</span><span class="org-string"><span class="org-rainbow-delimiters-depth-1">)</span></span><span class="org-string">; ylabel</span><span class="org-string"><span class="org-rainbow-delimiters-depth-1">(</span></span><span class="org-string">'Voltage </span><span class="org-string"><span class="org-rainbow-delimiters-depth-2">[</span></span><span class="org-string">V</span><span class="org-string"><span class="org-rainbow-delimiters-depth-2">]</span></span><span class="org-string">'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
xlim<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-rainbow-delimiters-depth-2">[</span><span class="org-highlight-numbers-number">0</span>, <span class="org-highlight-numbers-number">100</span><span class="org-rainbow-delimiters-depth-2">]</span><span class="org-rainbow-delimiters-depth-1">)</span>; ylim<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-rainbow-delimiters-depth-2">[</span><span class="org-type">-</span><span class="org-highlight-numbers-number">10</span> <span class="org-highlight-numbers-number">10</span><span class="org-rainbow-delimiters-depth-2">]</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
legend<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'Location', 'northeast'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
</pre>
|
||||
</div>
|
||||
|
||||
|
||||
<div id="org17ed71b" 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>
|
||||
</div>
|
||||
</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 class="outline-text-3" id="text-2-3">
|
||||
<p>
|
||||
We first compute some parameters that will be used for the PSD computation.
|
||||
</p>
|
||||
<div class="org-src-container">
|
||||
<pre class="src src-matlab">dt = of<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-highlight-numbers-number">2</span>, <span class="org-highlight-numbers-number">3</span><span class="org-rainbow-delimiters-depth-1">)</span><span class="org-type">-</span>of<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-highlight-numbers-number">1</span>, <span class="org-highlight-numbers-number">3</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
|
||||
Fs = <span class="org-highlight-numbers-number">1</span><span class="org-type">/</span>dt; <span class="org-comment">% [Hz]</span>
|
||||
|
||||
win = hanning<span class="org-rainbow-delimiters-depth-1">(</span>ceil<span class="org-rainbow-delimiters-depth-2">(</span><span class="org-highlight-numbers-number">10</span><span class="org-type">*</span>Fs<span class="org-rainbow-delimiters-depth-2">)</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
</pre>
|
||||
</div>
|
||||
|
||||
<p>
|
||||
Then we compute the Power Spectral Density using <code>pwelch</code> function.
|
||||
</p>
|
||||
|
||||
<p>
|
||||
First for the geophone located on the marble
|
||||
</p>
|
||||
<div class="org-src-container">
|
||||
<pre class="src src-matlab"><span class="org-rainbow-delimiters-depth-1">[</span>pxof_m, f<span class="org-rainbow-delimiters-depth-1">]</span> = pwelch<span class="org-rainbow-delimiters-depth-1">(</span>of<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-2">)</span>, win, <span class="org-rainbow-delimiters-depth-2">[]</span>, <span class="org-rainbow-delimiters-depth-2">[]</span>, Fs<span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
<span class="org-rainbow-delimiters-depth-1">[</span>pxsr_m, <span class="org-type">~</span><span class="org-rainbow-delimiters-depth-1">]</span> = pwelch<span class="org-rainbow-delimiters-depth-1">(</span>sr<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-2">)</span>, win, <span class="org-rainbow-delimiters-depth-2">[]</span>, <span class="org-rainbow-delimiters-depth-2">[]</span>, Fs<span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
<span class="org-rainbow-delimiters-depth-1">[</span>pxsp_m, <span class="org-type">~</span><span class="org-rainbow-delimiters-depth-1">]</span> = pwelch<span class="org-rainbow-delimiters-depth-1">(</span>sp<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-2">)</span>, win, <span class="org-rainbow-delimiters-depth-2">[]</span>, <span class="org-rainbow-delimiters-depth-2">[]</span>, Fs<span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
</pre>
|
||||
</div>
|
||||
|
||||
<p>
|
||||
And for the geophone located at the sample position.
|
||||
</p>
|
||||
<div class="org-src-container">
|
||||
<pre class="src src-matlab"><span class="org-rainbow-delimiters-depth-1">[</span>pxof_s, f<span class="org-rainbow-delimiters-depth-1">]</span> = pwelch<span class="org-rainbow-delimiters-depth-1">(</span>of<span class="org-rainbow-delimiters-depth-2">(</span><span class="org-type">:</span>, <span class="org-highlight-numbers-number">2</span><span class="org-rainbow-delimiters-depth-2">)</span>, win, <span class="org-rainbow-delimiters-depth-2">[]</span>, <span class="org-rainbow-delimiters-depth-2">[]</span>, Fs<span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
<span class="org-rainbow-delimiters-depth-1">[</span>pxsr_s, <span class="org-type">~</span><span class="org-rainbow-delimiters-depth-1">]</span> = pwelch<span class="org-rainbow-delimiters-depth-1">(</span>sr<span class="org-rainbow-delimiters-depth-2">(</span><span class="org-type">:</span>, <span class="org-highlight-numbers-number">2</span><span class="org-rainbow-delimiters-depth-2">)</span>, win, <span class="org-rainbow-delimiters-depth-2">[]</span>, <span class="org-rainbow-delimiters-depth-2">[]</span>, Fs<span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
<span class="org-rainbow-delimiters-depth-1">[</span>pxsp_s, <span class="org-type">~</span><span class="org-rainbow-delimiters-depth-1">]</span> = pwelch<span class="org-rainbow-delimiters-depth-1">(</span>sp<span class="org-rainbow-delimiters-depth-2">(</span><span class="org-type">:</span>, <span class="org-highlight-numbers-number">2</span><span class="org-rainbow-delimiters-depth-2">)</span>, win, <span class="org-rainbow-delimiters-depth-2">[]</span>, <span class="org-rainbow-delimiters-depth-2">[]</span>, Fs<span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
</pre>
|
||||
</div>
|
||||
|
||||
<p>
|
||||
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>
|
||||
</ul>
|
||||
|
||||
<div class="org-src-container">
|
||||
<pre class="src src-matlab"><span class="org-type">figure</span>;
|
||||
hold on;
|
||||
plot<span class="org-rainbow-delimiters-depth-1">(</span>f, sqrt<span class="org-rainbow-delimiters-depth-2">(</span>pxsp_m<span class="org-rainbow-delimiters-depth-2">)</span>, 'DisplayName', 'Spindle <span class="org-type">-</span> <span class="org-highlight-numbers-number">6rpm</span>'<span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
plot<span class="org-rainbow-delimiters-depth-1">(</span>f, sqrt<span class="org-rainbow-delimiters-depth-2">(</span>pxsr_m<span class="org-rainbow-delimiters-depth-2">)</span>, 'DisplayName', 'Slip<span class="org-type">-</span>Ring <span class="org-type">-</span> <span class="org-highlight-numbers-number">6rpm</span>'<span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
plot<span class="org-rainbow-delimiters-depth-1">(</span>f, sqrt<span class="org-rainbow-delimiters-depth-2">(</span>pxof_m<span class="org-rainbow-delimiters-depth-2">)</span>, <span class="org-string">'DisplayName', 'OFF'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
hold off;
|
||||
<span class="org-type">set</span><span class="org-rainbow-delimiters-depth-1">(</span><span class="org-variable-name">gca</span>, <span class="org-string">'xscale', 'log'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
<span class="org-type">set</span><span class="org-rainbow-delimiters-depth-1">(</span><span class="org-variable-name">gca</span>, <span class="org-string">'yscale', 'log'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
xlabel<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'Frequency </span><span class="org-string"><span class="org-rainbow-delimiters-depth-2">[</span></span><span class="org-string">Hz</span><span class="org-string"><span class="org-rainbow-delimiters-depth-2">]</span></span><span class="org-string">'</span><span class="org-string"><span class="org-rainbow-delimiters-depth-1">)</span></span><span class="org-string">; ylabel</span><span class="org-string"><span class="org-rainbow-delimiters-depth-1">(</span></span><span class="org-string">'</span>ASD of the measured Voltage $<span class="org-type">\</span>left<span class="org-rainbow-delimiters-depth-2">[</span><span class="org-type">\</span>frac<span class="org-rainbow-delimiters-depth-3">{</span>V<span class="org-rainbow-delimiters-depth-3">}{</span><span class="org-type">\</span>sqrt<span class="org-rainbow-delimiters-depth-4">{</span>Hz<span class="org-rainbow-delimiters-depth-4">}</span><span class="org-rainbow-delimiters-depth-3">}</span><span class="org-type">\</span>right<span class="org-rainbow-delimiters-depth-2">]</span>$'<span class="org-rainbow-delimiters-depth-1">)</span>
|
||||
legend<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'Location', 'southwest'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
xlim<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-rainbow-delimiters-depth-2">[</span><span class="org-highlight-numbers-number">0</span>.<span class="org-highlight-numbers-number">1</span>, <span class="org-highlight-numbers-number">500</span><span class="org-rainbow-delimiters-depth-2">]</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
</pre>
|
||||
</div>
|
||||
|
||||
|
||||
<div id="org9c0e002" 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>
|
||||
</div>
|
||||
|
||||
<div class="org-src-container">
|
||||
<pre class="src src-matlab"><span class="org-type">figure</span>;
|
||||
hold on;
|
||||
plot<span class="org-rainbow-delimiters-depth-1">(</span>f, sqrt<span class="org-rainbow-delimiters-depth-2">(</span>pxsp_s<span class="org-rainbow-delimiters-depth-2">)</span>, 'DisplayName', 'Spindle <span class="org-type">-</span> <span class="org-highlight-numbers-number">6rpm</span>'<span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
plot<span class="org-rainbow-delimiters-depth-1">(</span>f, sqrt<span class="org-rainbow-delimiters-depth-2">(</span>pxsr_s<span class="org-rainbow-delimiters-depth-2">)</span>, 'DisplayName', 'Slip<span class="org-type">-</span>Ring <span class="org-type">-</span> <span class="org-highlight-numbers-number">6rpm</span>'<span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
plot<span class="org-rainbow-delimiters-depth-1">(</span>f, sqrt<span class="org-rainbow-delimiters-depth-2">(</span>pxof_s<span class="org-rainbow-delimiters-depth-2">)</span>, <span class="org-string">'DisplayName', 'OFF'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
hold off;
|
||||
<span class="org-type">set</span><span class="org-rainbow-delimiters-depth-1">(</span><span class="org-variable-name">gca</span>, <span class="org-string">'xscale', 'log'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
<span class="org-type">set</span><span class="org-rainbow-delimiters-depth-1">(</span><span class="org-variable-name">gca</span>, <span class="org-string">'yscale', 'log'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
xlabel<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'Frequency </span><span class="org-string"><span class="org-rainbow-delimiters-depth-2">[</span></span><span class="org-string">Hz</span><span class="org-string"><span class="org-rainbow-delimiters-depth-2">]</span></span><span class="org-string">'</span><span class="org-string"><span class="org-rainbow-delimiters-depth-1">)</span></span><span class="org-string">; ylabel</span><span class="org-string"><span class="org-rainbow-delimiters-depth-1">(</span></span><span class="org-string">'</span>ASD of the measured Voltage $<span class="org-type">\</span>left<span class="org-rainbow-delimiters-depth-2">[</span><span class="org-type">\</span>frac<span class="org-rainbow-delimiters-depth-3">{</span>V<span class="org-rainbow-delimiters-depth-3">}{</span><span class="org-type">\</span>sqrt<span class="org-rainbow-delimiters-depth-4">{</span>Hz<span class="org-rainbow-delimiters-depth-4">}</span><span class="org-rainbow-delimiters-depth-3">}</span><span class="org-type">\</span>right<span class="org-rainbow-delimiters-depth-2">]</span>$'<span class="org-rainbow-delimiters-depth-1">)</span>
|
||||
legend<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-string">'Location', 'southwest'</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
xlim<span class="org-rainbow-delimiters-depth-1">(</span><span class="org-rainbow-delimiters-depth-2">[</span><span class="org-highlight-numbers-number">0</span>.<span class="org-highlight-numbers-number">1</span>, <span class="org-highlight-numbers-number">500</span><span class="org-rainbow-delimiters-depth-2">]</span><span class="org-rainbow-delimiters-depth-1">)</span>;
|
||||
</pre>
|
||||
</div>
|
||||
|
||||
|
||||
<div id="orgfbccecc" 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>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div id="outline-container-org122a9b6" class="outline-3">
|
||||
<h3 id="org122a9b6"><span class="section-number-3">2.4</span> Conclusion</h3>
|
||||
<div class="outline-text-3" id="text-2-4">
|
||||
<div class="important">
|
||||
<p>
|
||||
The slip-ring rotation induces almost no vibrations on the marble, and only a little vibrations on the sample above 100Hz.
|
||||
</p>
|
||||
|
||||
<p>
|
||||
The spindle rotation induces a lot of vibrations of the sample as well as on the granite.
|
||||
There is a huge peak at 24Hz on the sample vibration but not on the granite vibration.
|
||||
</p>
|
||||
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</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="validation"><a href="http://validator.w3.org/check?uri=referer">Validate</a></p>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
@@ -0,0 +1,205 @@
|
||||
#+TITLE: Vibrations induced by the Slip-Ring and the Spindle
|
||||
#+SETUPFILE: ../config.org
|
||||
|
||||
* Experimental Setup
|
||||
All the stages are OFF.
|
||||
|
||||
Two geophone are use:
|
||||
- One on the marble (corresponding to the first column in the data)
|
||||
- One at the sample location (corresponding to the second column in the data)
|
||||
|
||||
Two voltage amplifiers are used, their setup is:
|
||||
- gain of 60dB
|
||||
- AC/DC switch on AC
|
||||
- Low pass filter at 1kHz
|
||||
|
||||
A first order low pass filter is also added at the input of the voltage amplifiers.
|
||||
|
||||
*Goal*:
|
||||
- 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
|
||||
|
||||
A movie showing the experiment is shown on figure [[fig:exp_sl_sp_gif]].
|
||||
|
||||
#+name: fig:exp_sl_sp_gif
|
||||
#+attr_html: :width 300px
|
||||
#+caption: Movie of the experiment, rotation speed is 6rpm
|
||||
[[file:./img/VID_20190510_155655.gif]]
|
||||
|
||||
* Data Analysis
|
||||
:PROPERTIES:
|
||||
:header-args:matlab+: :tangle matlab/spindle_slip_ring_vibrations.m
|
||||
:header-args:matlab+: :comments org :mkdirp yes
|
||||
:END:
|
||||
<<sec:spindle_slip_ring_vibrations>>
|
||||
|
||||
#+begin_src bash :exports none :results none
|
||||
if [ matlab/spindle_slip_ring_vibrations.m -nt data/spindle_slip_ring_vibrations.zip ]; then
|
||||
cp matlab/spindle_slip_ring_vibrations.m spindle_slip_ring_vibrations.m;
|
||||
zip data/spindle_slip_ring_vibrations \
|
||||
mat/data_024.mat \
|
||||
mat/data_025.mat \
|
||||
mat/data_026.mat \
|
||||
spindle_slip_ring_vibrations.m
|
||||
rm spindle_slip_ring_vibrations.m;
|
||||
fi
|
||||
#+end_src
|
||||
|
||||
#+begin_note
|
||||
All the files (data and Matlab scripts) are accessible [[file:data/spindle_slip_ring_vibrations.zip][here]].
|
||||
#+end_note
|
||||
|
||||
** Matlab Init :noexport:ignore:
|
||||
#+begin_src matlab :tangle no :exports none :results silent :noweb yes :var current_dir=(file-name-directory buffer-file-name)
|
||||
<<matlab-dir>>
|
||||
#+end_src
|
||||
|
||||
#+begin_src matlab :exports none :results silent :noweb yes
|
||||
<<matlab-init>>
|
||||
#+end_src
|
||||
|
||||
** Load data
|
||||
#+begin_src matlab
|
||||
of = load('mat/data_024.mat', 'data'); of = of.data;
|
||||
sr = load('mat/data_025.mat', 'data'); sr = sr.data;
|
||||
sp = load('mat/data_026.mat', 'data'); sp = sp.data;
|
||||
#+end_src
|
||||
|
||||
** Time domain plots
|
||||
#+begin_src matlab
|
||||
figure;
|
||||
hold on;
|
||||
plot(sp(:, 3), sp(:, 1), 'DisplayName', 'Spindle - 6rpm');
|
||||
plot(sr(:, 3), sr(:, 1), 'DisplayName', 'Slip-Ring - 6rpm');
|
||||
plot(of(:, 3), of(:, 1), 'DisplayName', 'OFF');
|
||||
hold off;
|
||||
xlabel('Time [s]'); ylabel('Voltage [V]');
|
||||
xlim([0, 100]); ylim([-10 10]);
|
||||
legend('Location', 'northeast');
|
||||
#+end_src
|
||||
|
||||
#+NAME: fig:slip_ring_spindle_marble_time
|
||||
#+HEADER: :tangle no :exports results :results value raw replace :noweb yes
|
||||
#+begin_src matlab :var filepath="figs/slip_ring_spindle_marble_time.pdf" :var figsize="wide-normal" :post pdf2svg(file=*this*, ext="png")
|
||||
<<plt-matlab>>
|
||||
#+end_src
|
||||
|
||||
#+NAME: fig:slip_ring_spindle_marble_time
|
||||
#+CAPTION: Measurement of the geophone located on the marble - Time domain
|
||||
#+RESULTS: fig:slip_ring_spindle_marble_time
|
||||
[[file:figs/slip_ring_spindle_marble_time.png]]
|
||||
|
||||
#+begin_src matlab
|
||||
figure;
|
||||
hold on;
|
||||
plot(sp(:, 3), sp(:, 2), 'DisplayName', 'Spindle and Slip-Ring');
|
||||
plot(sr(:, 3), sr(:, 2), 'DisplayName', 'Only Slip-Ring');
|
||||
plot(of(:, 3), of(:, 2), 'DisplayName', 'OFF');
|
||||
hold off;
|
||||
xlabel('Time [s]'); ylabel('Voltage [V]');
|
||||
xlim([0, 100]); ylim([-10 10]);
|
||||
legend('Location', 'northeast');
|
||||
#+end_src
|
||||
|
||||
#+NAME: fig:slip_ring_spindle_sample_time
|
||||
#+HEADER: :tangle no :exports results :results value raw replace :noweb yes
|
||||
#+begin_src matlab :var filepath="figs/slip_ring_spindle_sample_time.pdf" :var figsize="wide-normal" :post pdf2svg(file=*this*, ext="png")
|
||||
<<plt-matlab>>
|
||||
#+end_src
|
||||
|
||||
#+NAME: fig:slip_ring_spindle_sample_time
|
||||
#+CAPTION: Measurement of the geophone at the sample location - Time domain
|
||||
#+RESULTS: fig:slip_ring_spindle_sample_time
|
||||
[[file:figs/slip_ring_spindle_sample_time.png]]
|
||||
|
||||
** Frequency Domain
|
||||
We first compute some parameters that will be used for the PSD computation.
|
||||
#+begin_src matlab :results none
|
||||
dt = of(2, 3)-of(1, 3);
|
||||
|
||||
Fs = 1/dt; % [Hz]
|
||||
|
||||
win = hanning(ceil(10*Fs));
|
||||
#+end_src
|
||||
|
||||
Then we compute the Power Spectral Density using =pwelch= function.
|
||||
|
||||
First for the geophone located on the marble
|
||||
#+begin_src matlab
|
||||
[pxof_m, f] = pwelch(of(:, 1), win, [], [], Fs);
|
||||
[pxsr_m, ~] = pwelch(sr(:, 1), win, [], [], Fs);
|
||||
[pxsp_m, ~] = pwelch(sp(:, 1), win, [], [], Fs);
|
||||
#+end_src
|
||||
|
||||
And for the geophone located at the sample position.
|
||||
#+begin_src matlab
|
||||
[pxof_s, f] = pwelch(of(:, 2), win, [], [], Fs);
|
||||
[pxsr_s, ~] = pwelch(sr(:, 2), win, [], [], Fs);
|
||||
[pxsp_s, ~] = pwelch(sp(:, 2), win, [], [], Fs);
|
||||
#+end_src
|
||||
|
||||
And we plot the ASD of the measured signals:
|
||||
- figure [[fig:sr_sp_psd_marble_compare]] for the geophone located on the marble
|
||||
- figure [[fig:sr_sp_psd_sample_compare]] for the geophone at the sample position
|
||||
|
||||
#+begin_src matlab :results none
|
||||
figure;
|
||||
hold on;
|
||||
plot(f, sqrt(pxsp_m), 'DisplayName', 'Spindle - 6rpm');
|
||||
plot(f, sqrt(pxsr_m), 'DisplayName', 'Slip-Ring - 6rpm');
|
||||
plot(f, sqrt(pxof_m), 'DisplayName', 'OFF');
|
||||
hold off;
|
||||
set(gca, 'xscale', 'log');
|
||||
set(gca, 'yscale', 'log');
|
||||
xlabel('Frequency [Hz]'); ylabel('ASD of the measured Voltage $\left[\frac{V}{\sqrt{Hz}}\right]$')
|
||||
legend('Location', 'southwest');
|
||||
xlim([0.1, 500]);
|
||||
#+end_src
|
||||
|
||||
#+NAME: fig:sr_sp_psd_marble_compare
|
||||
#+HEADER: :tangle no :exports results :results value raw replace :noweb yes
|
||||
#+begin_src matlab :var filepath="figs/sr_sp_psd_marble_compare.pdf" :var figsize="full-tall" :post pdf2svg(file=*this*, ext="png")
|
||||
<<plt-matlab>>
|
||||
#+end_src
|
||||
|
||||
#+NAME: fig:sr_sp_psd_marble_compare
|
||||
#+CAPTION: Comparison of the ASD of the measured voltage from the Geophone on the marble
|
||||
#+RESULTS: fig:sr_sp_psd_marble_compare
|
||||
[[file:figs/sr_sp_psd_marble_compare.png]]
|
||||
|
||||
#+begin_src matlab :results none
|
||||
figure;
|
||||
hold on;
|
||||
plot(f, sqrt(pxsp_s), 'DisplayName', 'Spindle - 6rpm');
|
||||
plot(f, sqrt(pxsr_s), 'DisplayName', 'Slip-Ring - 6rpm');
|
||||
plot(f, sqrt(pxof_s), 'DisplayName', 'OFF');
|
||||
hold off;
|
||||
set(gca, 'xscale', 'log');
|
||||
set(gca, 'yscale', 'log');
|
||||
xlabel('Frequency [Hz]'); ylabel('ASD of the measured Voltage $\left[\frac{V}{\sqrt{Hz}}\right]$')
|
||||
legend('Location', 'southwest');
|
||||
xlim([0.1, 500]);
|
||||
#+end_src
|
||||
|
||||
#+NAME: fig:sr_sp_psd_sample_compare
|
||||
#+HEADER: :tangle no :exports results :results value raw replace :noweb yes
|
||||
#+begin_src matlab :var filepath="figs/sr_sp_psd_sample_compare.pdf" :var figsize="full-tall" :post pdf2svg(file=*this*, ext="png")
|
||||
<<plt-matlab>>
|
||||
#+end_src
|
||||
|
||||
#+NAME: fig:sr_sp_psd_sample_compare
|
||||
#+CAPTION: Comparison of the ASD of the measured voltage from the Geophone at the sample location
|
||||
#+RESULTS: fig:sr_sp_psd_sample_compare
|
||||
[[file:figs/sr_sp_psd_sample_compare.png]]
|
||||
|
||||
** Conclusion
|
||||
#+begin_important
|
||||
The slip-ring rotation induces almost no vibrations on the marble, and only a little vibrations on the sample above 100Hz.
|
||||
|
||||
The spindle rotation induces a lot of vibrations of the sample as well as on the granite.
|
||||
There is a huge peak at 24Hz on the sample vibration but not on the granite vibration.
|
||||
#+end_important
|
||||
File renamed without changes.
File renamed without changes.
File renamed without changes.
@@ -0,0 +1,107 @@
|
||||
%% Clear Workspace and Close figures
|
||||
clear; close all; clc;
|
||||
|
||||
%% Intialize Laplace variable
|
||||
s = zpk('s');
|
||||
|
||||
% Load data
|
||||
|
||||
of = load('mat/data_024.mat', 'data'); of = of.data;
|
||||
sr = load('mat/data_025.mat', 'data'); sr = sr.data;
|
||||
sp = load('mat/data_026.mat', 'data'); sp = sp.data;
|
||||
|
||||
% Time domain plots
|
||||
|
||||
figure;
|
||||
hold on;
|
||||
plot(sp(:, 3), sp(:, 1), 'DisplayName', 'Spindle - 6rpm');
|
||||
plot(sr(:, 3), sr(:, 1), 'DisplayName', 'Slip-Ring - 6rpm');
|
||||
plot(of(:, 3), of(:, 1), 'DisplayName', 'OFF');
|
||||
hold off;
|
||||
xlabel('Time [s]'); ylabel('Voltage [V]');
|
||||
xlim([0, 100]); ylim([-10 10]);
|
||||
legend('Location', 'northeast');
|
||||
|
||||
|
||||
|
||||
% #+NAME: fig:slip_ring_spindle_marble_time
|
||||
% #+CAPTION: Measurement of the geophone located on the marble - Time domain
|
||||
% #+RESULTS: fig:slip_ring_spindle_marble_time
|
||||
% [[file:figs/slip_ring_spindle_marble_time.png]]
|
||||
|
||||
|
||||
figure;
|
||||
hold on;
|
||||
plot(sp(:, 3), sp(:, 2), 'DisplayName', 'Spindle and Slip-Ring');
|
||||
plot(sr(:, 3), sr(:, 2), 'DisplayName', 'Only Slip-Ring');
|
||||
plot(of(:, 3), of(:, 2), 'DisplayName', 'OFF');
|
||||
hold off;
|
||||
xlabel('Time [s]'); ylabel('Voltage [V]');
|
||||
xlim([0, 100]); ylim([-10 10]);
|
||||
legend('Location', 'northeast');
|
||||
|
||||
% Frequency Domain
|
||||
% We first compute some parameters that will be used for the PSD computation.
|
||||
|
||||
dt = of(2, 3)-of(1, 3);
|
||||
|
||||
Fs = 1/dt; % [Hz]
|
||||
|
||||
win = hanning(ceil(10*Fs));
|
||||
|
||||
|
||||
|
||||
% Then we compute the Power Spectral Density using =pwelch= function.
|
||||
|
||||
% First for the geophone located on the marble
|
||||
|
||||
[pxof_m, f] = pwelch(of(:, 1), win, [], [], Fs);
|
||||
[pxsr_m, ~] = pwelch(sr(:, 1), win, [], [], Fs);
|
||||
[pxsp_m, ~] = pwelch(sp(:, 1), win, [], [], Fs);
|
||||
|
||||
|
||||
|
||||
% And for the geophone located at the sample position.
|
||||
|
||||
[pxof_s, f] = pwelch(of(:, 2), win, [], [], Fs);
|
||||
[pxsr_s, ~] = pwelch(sr(:, 2), win, [], [], Fs);
|
||||
[pxsp_s, ~] = pwelch(sp(:, 2), win, [], [], Fs);
|
||||
|
||||
|
||||
|
||||
% And we plot the ASD of the measured signals:
|
||||
% - figure [[fig:sr_sp_psd_marble_compare]] for the geophone located on the marble
|
||||
% - figure [[fig:sr_sp_psd_sample_compare]] for the geophone at the sample position
|
||||
|
||||
|
||||
figure;
|
||||
hold on;
|
||||
plot(f, sqrt(pxsp_m), 'DisplayName', 'Spindle - 6rpm');
|
||||
plot(f, sqrt(pxsr_m), 'DisplayName', 'Slip-Ring - 6rpm');
|
||||
plot(f, sqrt(pxof_m), 'DisplayName', 'OFF');
|
||||
hold off;
|
||||
set(gca, 'xscale', 'log');
|
||||
set(gca, 'yscale', 'log');
|
||||
xlabel('Frequency [Hz]'); ylabel('ASD of the measured Voltage $\left[\frac{V}{\sqrt{Hz}}\right]$')
|
||||
legend('Location', 'southwest');
|
||||
xlim([0.1, 500]);
|
||||
|
||||
|
||||
|
||||
% #+NAME: fig:sr_sp_psd_marble_compare
|
||||
% #+CAPTION: Comparison of the ASD of the measured voltage from the Geophone on the marble
|
||||
% #+RESULTS: fig:sr_sp_psd_marble_compare
|
||||
% [[file:figs/sr_sp_psd_marble_compare.png]]
|
||||
|
||||
|
||||
figure;
|
||||
hold on;
|
||||
plot(f, sqrt(pxsp_s), 'DisplayName', 'Spindle - 6rpm');
|
||||
plot(f, sqrt(pxsr_s), 'DisplayName', 'Slip-Ring - 6rpm');
|
||||
plot(f, sqrt(pxof_s), 'DisplayName', 'OFF');
|
||||
hold off;
|
||||
set(gca, 'xscale', 'log');
|
||||
set(gca, 'yscale', 'log');
|
||||
xlabel('Frequency [Hz]'); ylabel('ASD of the measured Voltage $\left[\frac{V}{\sqrt{Hz}}\right]$')
|
||||
legend('Location', 'southwest');
|
||||
xlim([0.1, 500]);
|
||||
Reference in new issue
Block a user