Dynamics and Control

PID Tuning Guide

• PI Control Notes

(:html:) <iframe width="560" height="315" src="//www.youtube.com/embed/ifEsb7BoCIQ?rel=0" frameborder="0" allowfullscreen></iframe> (:htmlend:)

Don't forget to write the purpose at the beginning of each homework problem. This will help you think about each problem in the context of the overall course objectives.

(:html:)

 <div id="disqus_thread"></div>
    <script type="text/javascript">
        /* * * CONFIGURATION VARIABLES: EDIT BEFORE PASTING INTO YOUR WEBPAGE * * */
        var disqus_shortname = 'apmonitor'; // required: replace example with your forum shortname

        /* * * DON'T EDIT BELOW THIS LINE * * */
        (function() {
            var dsq = document.createElement('script'); dsq.type = 'text/javascript'; dsq.async = true;
            dsq.src = 'https://' + disqus_shortname + '.disqus.com/embed.js';
            (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(dsq);
        })();
    </script>
    <noscript>Please enable JavaScript to view the <a href="https://disqus.com/?ref_noscript">comments powered by Disqus.</a></noscript>
    <a href="https://disqus.com" class="dsq-brlink">comments powered by <span class="logo-disqus">Disqus</span></a>

(:htmlend:)

(:html:) <iframe width="560" height="315" src="https://www.youtube.com/embed/UR0hOmjaHp0" frameborder="0" allowfullscreen></iframe> (:htmlend:)

• Example Calculation of Overshoot

Don't forget to write the purpose at the beginning of each homework problem. This will help you think about each problem in the context of the overall course objectives.

You may find the PID tuning guide useful for SP4 and other homework problems. The correlation used most commonly is to start with Kc = 1/Kp and tau_I = tau_P. Practitioners will typically lower the value of Kc if there is significant dead-time.

• PID Tuning Guide

It is also found on pg. 285 of the Practical Process Control Textbook.

• Performance Analysis Worksheet

You may find the above PID tuning guide useful for SP4. It is also found on pg. 285 of the Practical Process Control Textbook.

Don't forget to write the purpose at the beginning of each homework problem. This will help you think about each problem in the context of the overall course objectives.

• Integral Error Worksheet
• Performance Analysis Worksheet

Lecture 7 - Proportional-Integral Control

Lecture 5 covered Proportional-Only Control. The tuning parameters were derived from a First-Order Plus Dead-Time (FOPDT) model. For Lecture 7 we'll add the Integral term in addition to the Proportional term. The next lecture, we'll discuss the derivative term to finish our discussion of Proportional-Integral-Derivative (PID) controllers.

• Lecture 7 Class Notes

Homework

1. Course reading for next class: Chapter 10 (PPC).
2. Assignment due by the start of Lecture #8: SP4, SP5

The first part of each homework assignment is to write a sentence or two stating the purpose of the problem.