<html>
<head>
<style><!--
.hmmessage P
{
margin:0px;
padding:0px
}
body.hmmessage
{
font-size: 10pt;
font-family:Tahoma
}
--></style>
</head>
<body class='hmmessage'>
SciLAB is a very sophisticated analysis package, but for a preliminary look at time-series data; I like to start with NIST Dataplot (http://www.itl.nist.gov/div898/software/dataplot/), which can handle very large data bases, such as I would expect from your vibration alnalyis- including a very fast FFT that can give you your natural frequencies very quickly. When I have a large data set to analyze, I like to look at it first in Dataplot, before going on to more in-depth analysis (filtering, etc.) in SciLAB. Dataplot itself is very sophisticated with a good GUI for visualizing data...<br><br>Charlie <br><br><hr id="stopSpelling">From: paul.carrico@free.fr<br>To: users@lists.scilab.org<br>Date: Sun, 10 Oct 2010 22:02:42 +0200<br>Subject: [scilab-Users] vibration test analysis<br><br>
<meta http-equiv="Content-Type" content="text/html; charset=unicode">
<meta name="Generator" content="Microsoft SafeHTML">
<style>
.ExternalClass p.ecxMsoNormal, .ExternalClass li.ecxMsoNormal, .ExternalClass div.ecxMsoNormal
{margin-bottom:.0001pt;font-size:11.0pt;font-family:'Calibri','sans-serif';}
.ExternalClass a:link, .ExternalClass span.ecxMsoHyperlink
{color:blue;text-decoration:underline;}
.ExternalClass a:visited, .ExternalClass span.ecxMsoHyperlinkFollowed
{color:purple;text-decoration:underline;}
.ExternalClass span.ecxEmailStyle17
{font-family:'Calibri','sans-serif';color:windowtext;}
.ExternalClass .ecxMsoChpDefault
{;}
@page WordSection1
{size:612.0pt 792.0pt;}
.ExternalClass div.ecxWordSection1
{page:WordSection1;}
</style>
<div class="ecxWordSection1">
<p class="ecxMsoNormal">All,</p>
<p class="ecxMsoNormal"> </p>
<p class="ecxMsoNormal"><span lang="EN-US">Does somebody has ever wrote/coded (under
Scilab but not necessary) a program that analyses the vibration tests results (i.e.
automatically find the natural frequencies) ? </span></p>
<p class="ecxMsoNormal"><span lang="EN-US"> </span></p>
<p class="ecxMsoNormal"><span lang="EN-US">I do it manually but studying the transmissibility’s
and the phase changes but I would like to code it under Scilab and of course
there won’t be any human appreciation/analysis</span></p>
<p class="ecxMsoNormal"><span lang="EN-US"> </span></p>
<p class="ecxMsoNormal"><span lang="EN-US">The purpose of this email is not to have
this code but to have advices/information’s on the method / algorithm and
so on !</span></p>
<p class="ecxMsoNormal"><span lang="EN-US"> </span></p>
<p class="ecxMsoNormal"><span lang="EN-US">In any way It’s a good challenge for
me</span></p>
<p class="ecxMsoNormal"><span lang="EN-US"> </span></p>
<p class="ecxMsoNormal"><span lang="EN-US"> </span></p>
<p class="ecxMsoNormal"><span lang="EN-US">Thanks for any help</span></p>
<p class="ecxMsoNormal"><span lang="EN-US"> </span></p>
<p class="ecxMsoNormal"><span lang="EN-US">Paul</span></p>
</div> </body>
</html>