<html><head></head><body><div class="ydpc0cadab4yahoo-style-wrap" style="font-family: times new roman, new york, times, serif; font-size: 24px;"><div><span>Dear all,</span></div><div><span style="color: rgb(33, 33, 33); font-family: Arial, sans-serif; font-size: 14pt; white-space: pre-wrap;">I'm trying to do a simulation involving a </span><span style="color: rgb(33, 33, 33); font-family: Arial, sans-serif; font-size: 14pt; white-space: pre-wrap;">system of ordinary differential equations. However, in working out the block </span><span style="color: rgb(33, 33, 33); font-family: Arial, sans-serif; font-size: 14pt; white-space: pre-wrap;">diagram, I came across an algebraic loop problem.</span><span><pre style="background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span lang="EN" style="font-family:inherit,serif;color:#212121;mso-ansi-language:EN"><span><pre style="white-space: pre-wrap; color: rgb(0, 0, 0); font-size: 24px; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span><p class="ydpc0dc7c1MsoNormal" style="background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span style="font-size:14.0pt;font-family:Arial,sans-serif;color:#212121"></span></p><pre style="background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span lang="EN" style="font-size:14.0pt;font-family:Arial,sans-serif;color:#212121;mso-ansi-language:EN">To solve this problem, I made a new arrangement of the equations and then it was necessary to include a derivative block.</span><span style="font-size:14.0pt;font-family:Arial,sans-serif;color:#212121"></span></pre><pre style="background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span lang="EN" style="font-size:14.0pt;font-family:Arial,sans-serif;color:#212121;mso-ansi-language:EN">Two new problems have appeared: 1) the initial value of the output signal does not match the value obtained by the initial value theorem and 2) the signal has a strong oscillation (probably due to high frequencies).</span><span style="font-size:14.0pt;font-family:Arial,sans-serif;color:#212121"></span></pre><pre style="background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span lang="EN" style="font-size:14.0pt;font-family:Arial,sans-serif;color:#212121;mso-ansi-language:EN">Can anyone help me solve these issues? Attached, the. Thank you very much.</span><span style="font-size:14.0pt;font-family:Arial,sans-serif;color:#212121"></span></pre><pre style="background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span lang="EN" style="font-size:14.0pt;font-family:Arial,sans-serif;color:#212121;mso-ansi-language:EN"><br></span></pre>
<p class="ydpc0dc7c1MsoNormal" style="text-align:justify"> </p></span><br></pre></span></span></pre><pre style="background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><span lang="EN" style="font-family:inherit,serif;color:#212121;mso-ansi-language:EN"><br></span></pre></span><br></div><div><br></div><div class="ydpc0cadab4signature"><div style="font-family:garamond,;font-size:16px;"><font face="verdana, helvetica, sans-serif" size="1">--<br></font><div class="ydpc5ca3d36gmail_signature"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><font face="verdana, helvetica, sans-serif" size="1">Marcus Vinicius Pereira de Souza, D.Sc. (Eng.)</font><div><font face="verdana, helvetica, sans-serif" size="1">Prof. do Ens. Bas. Tec. Tecnológico</font></div><div><font face="verdana, helvetica, sans-serif" size="1">CEFET/RJ | Campus Valença-RJ<br>Cel: +55 32 9 8436 9695 (TIM - Wapp)<br></font><div><a href="http://lattes.cnpq.br/1549590151077934" rel="nofollow" target="_blank"><i><font face="verdana, helvetica, sans-serif" size="1">http://lattes.cnpq.br/1549590151077934</font></i></a><br></div></div></div></div></div></div></div></div></div></div></body></html>