<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[Issue with the SAT block]]></title><description><![CDATA[<p dir="auto">Hi,<br />
I am facing some troubles with the SAT block.<br />
It should respect either variable limits or fixed limits, based on HLD signal.<br />
However, in my project, only inner fixed limits (+0.75 , -0.75) are considered no matter if HLD is on or off.<br />
<img src="/assets/uploads/files/1744025056362-3097a4d8-4da6-48f9-9e20-eccb1c47f56c-image.png" alt="3097a4d8-4da6-48f9-9e20-eccb1c47f56c-image.png" class=" img-fluid img-markdown" /><br />
<img src="/assets/uploads/files/1744025115636-de7acc7b-b4bd-4835-8038-e4affeb2b21d-image.png" alt="de7acc7b-b4bd-4835-8038-e4affeb2b21d-image.png" class=" img-fluid img-markdown" /></p>
]]></description><link>https://forum.rexygen.com/topic/602/issue-with-the-sat-block</link><generator>RSS for Node</generator><lastBuildDate>Sat, 16 May 2026 17:48:41 GMT</lastBuildDate><atom:link href="https://forum.rexygen.com/topic/602.rss" rel="self" type="application/rss+xml"/><pubDate>Mon, 07 Apr 2025 11:26:31 GMT</pubDate><ttl>60</ttl><item><title><![CDATA[Reply to Issue with the SAT block on Thu, 10 Apr 2025 05:00:00 GMT]]></title><description><![CDATA[<p dir="auto"><a class="plugin-mentions-user plugin-mentions-a" href="https://forum.rexygen.com/uid/186">@Jan-Reitinger</a> Thanks for explanation! I promise I will study the documentation in more details next time.  However, still I have some remarks here.</p>
<p dir="auto">Regarding SAT documentation:<br />
"The maximal rate at which the active limits may vary is given by time constants tp (positive slope) and tn (negative slope)."<br />
This statement is ambigous for me.<br />
If we say maximal rate of the signal is affected by some parameter rate_max, then from technical point of view, higher<br />
rate_max means higher allowable rate (1st derivative), thus indicating being close to immediate changes of the signal.<br />
So if rate_max reaches infinity, immediate changes are allowed.</p>
<p dir="auto">Then we should say the maximal rate at which the active limits may vary is given by INVERSE OF time constants tp,<br />
and rate_max = 1/tp, meaning that the meaning of logic in choice of parameters tp and tn is actually inverse.</p>
<p dir="auto">This is actually declared in the documentation of RLIM block as the steepest rise per second, and should be also repeated for for documentation of SAT to keep documentation consistent.</p>
<p dir="auto">I tried series connection of CNR and RLIM, and changing CNR on the fly. If tp=0.1, then maximal slope is 10, and the new value of CNR is<br />
reached in 0.1s, following linear ramp signal. This is OK, and similar functionality works for SAT block.</p>
<p dir="auto">Also, reading "time constants tp and tn" may indicate presence of some dynamics like first-order system 1/(tp*s+1) or 1/(tn*s+1), because this technical term is ususally used<br />
when talking about dynamic systems. It would be much better to simply use "parameters tp and tn" instead to make things clear.</p>
]]></description><link>https://forum.rexygen.com/post/1686</link><guid isPermaLink="true">https://forum.rexygen.com/post/1686</guid><dc:creator><![CDATA[stepan.ozana]]></dc:creator><pubDate>Thu, 10 Apr 2025 05:00:00 GMT</pubDate></item><item><title><![CDATA[Reply to Issue with the SAT block on Wed, 09 Apr 2025 18:28:48 GMT]]></title><description><![CDATA[<p dir="auto"><a class="plugin-mentions-user plugin-mentions-a" href="https://forum.rexygen.com/uid/26">@stepan-ozana</a><br />
The problem is caused by a large value in the parameters tn and tp. The change occurs, but it is very slow. For a faster transition between values, set lower parameter values. For an immediate change, set 0.</p>
]]></description><link>https://forum.rexygen.com/post/1684</link><guid isPermaLink="true">https://forum.rexygen.com/post/1684</guid><dc:creator><![CDATA[Jan Reitinger]]></dc:creator><pubDate>Wed, 09 Apr 2025 18:28:48 GMT</pubDate></item><item><title><![CDATA[Reply to Issue with the SAT block on Wed, 09 Apr 2025 07:03:04 GMT]]></title><description><![CDATA[<p dir="auto"><a class="plugin-mentions-user plugin-mentions-a" href="https://forum.rexygen.com/uid/186">@Jan-Reitinger</a></p>
<p dir="auto">Thanks. I tried both 3.00.2 rev. 16743  and 3.04 17159. Check out the video recording:</p>
<p dir="auto"><a href="https://drive.google.com/file/d/1-A4vBMiOb91N9w5tX6H8bUDGmSjGPXCG/view?usp=sharing">https://drive.google.com/file/d/1-A4vBMiOb91N9w5tX6H8bUDGmSjGPXCG/view?usp=sharing</a></p>
]]></description><link>https://forum.rexygen.com/post/1683</link><guid isPermaLink="true">https://forum.rexygen.com/post/1683</guid><dc:creator><![CDATA[stepan.ozana]]></dc:creator><pubDate>Wed, 09 Apr 2025 07:03:04 GMT</pubDate></item><item><title><![CDATA[Reply to Issue with the SAT block on Tue, 08 Apr 2025 11:28:29 GMT]]></title><description><![CDATA[<p dir="auto"><a class="plugin-mentions-user plugin-mentions-a" href="https://forum.rexygen.com/uid/26">@stepan-ozana</a> Hello,<br />
thank you for your report.</p>
<p dir="auto">Please, what version of REXYGEN are you using? I've tested it now on 3.0.4.17197 and everything seems to work. I'm attaching a printscreen and the project.<br />
<img src="/assets/uploads/files/1744111638518-327187a5-26b0-4640-99c3-20348af4e7b4-image.png" alt="327187a5-26b0-4640-99c3-20348af4e7b4-image.png" class=" img-fluid img-markdown" /> <a href="/assets/uploads/files/1744111688304-myproject_exec.mdl">myproject_exec.mdl</a> <a href="/assets/uploads/files/1744111688314-myproject_task.mdl">myproject_task.mdl</a></p>
<p dir="auto">Best regards,<br />
Jan</p>
]]></description><link>https://forum.rexygen.com/post/1682</link><guid isPermaLink="true">https://forum.rexygen.com/post/1682</guid><dc:creator><![CDATA[Jan Reitinger]]></dc:creator><pubDate>Tue, 08 Apr 2025 11:28:29 GMT</pubDate></item></channel></rss>