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</o:shapelayout></xml><![endif]--></head><body lang=FR link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Hello,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>If ymodel is (experimentally) proportional to u (and u is not too close to 0), it seems better to adjust z= ymodel/u = f(s).<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>I frequently use “datafit” for this purpose. Here f(x)=</span><span lang=EN-US> (K/(Tau*x+1))*exp(-Td*x).</span><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>HTH,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Denis <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>[@@ THALES GROUP INTERNAL @@]<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>De :</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> users [mailto:users-bounces@lists.scilab.org] <b>De la part de</b> Fukashiimo<br><b>Envoyé :</b> samedi 24 septembre 2016 2</span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>3:11<br><b>À :</b> users@lists.scilab.org<br><b>Objet :</b> Re: [Scilab-users] System Identification for First order delay and dead time<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p>s is the Laplace operator, u is the process input vatiable, y is the process output variable,<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>2016/09/24 23:44 "Samuel GOUGEON [via Scilab / Xcos - Mailing Lists Archives]" <<a href="/user/SendEmail.jtp?type=node&node=4034613&i=0" target="_top">[hidden email]</a>>:<o:p></o:p></p><p class=MsoNormal>Le 24/09/2016 15:59, Fukashiimo a écrit : <o:p></o:p></p><div><div><p class=MsoNormal><br>> Hello, <br>> <br>> I am looking for a Scilab software which is similar to Matlab System ID tool <br>> box. <br>> <br>> I would like to obtain values of parameters, Tau, K and Td for following <br>> first order delay + Dead time model from time series data. <br>> ymodel = (K/(Tau*s+1))*exp(-Td*s)*u <br>> ymodel: process output, u: process input <br>> SISO continuous time <o:p></o:p></p></div><p class=MsoNormal>. <o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'>What is s? <br>What's the input variable: s or u? And is the other a known parameter? <br><br><br>_______________________________________________ <br>users mailing list <br><a href="http://user/SendEmail.jtp?type=node&node=4034610&i=0" target="_blank">[hidden email]</a> <br><a href="http://lists.scilab.org/mailman/listinfo/users" target="_blank">http://lists.scilab.org/mailman/listinfo/users</a><br><br><o:p></o:p></p><div class=MsoNormal align=center style='text-align:center'><hr size=1 width="100%" noshade style='color:#CCCCCC' align=center></div><div><div><p class=MsoNormal><b><span style='font-size:9.0pt;font-family:"Tahoma","sans-serif";color:#444444'>If you reply to this email, your message will be added to the discussion below:<o:p></o:p></span></b></p></div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Tahoma","sans-serif";color:#444444'><a href="http://mailinglists.scilab.org/System-Identification-for-First-order-delay-and-dead-time-tp4034608p4034610.html" target="_blank">http://mailinglists.scilab.org/System-Identification-for-First-order-delay-and-dead-time-tp4034608p4034610.html</a> <o:p></o:p></span></p></div><div style='margin-top:4.8pt'><p class=MsoNormal style='line-height:18.0pt'><span style='font-size:8.5pt;font-family:"Tahoma","sans-serif";color:#666666'>To unsubscribe from System Identification for First order delay and dead time, <a href="" target="_blank">click here</a>.<br><a href="http://mailinglists.scilab.org/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml" target="_blank"><span style='font-size:7.0pt;font-family:"Times New Roman","serif"'>NAML</span></a> <o:p></o:p></span></p></div></div></div><p class=MsoNormal><o:p> </o:p></p><div class=MsoNormal><hr size=2 width=300 style='width:225.0pt' align=left></div><p class=MsoNormal>View this message in context: <a href="http://mailinglists.scilab.org/System-Identification-for-First-order-delay-and-dead-time-tp4034608p4034613.html">Re: System Identification for First order delay and dead time</a><br>Sent from the <a href="http://mailinglists.scilab.org/Scilab-users-Mailing-Lists-Archives-f2602246.html">Scilab users - Mailing Lists Archives mailing list archive</a> at Nabble.com.<o:p></o:p></p></div></body></html>