O'Reilly logo

Process Control: Modeling, Design, and Simulation by B. Wayne Bequette

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

M6.5. IMC-Based PID Control

Recall from Chapter 9 that Padé approximations for dead time could be used to develop a IMC-based PI and PID controllers for first-order + time-delay systems. Here, we compare the gain and phase margins for an IMC-based PI controller (using the “improved” settings) for various values of λ.

The improved IMC-based PI settings are as follows:

Problem 4. For the IMC-based PI (improved) settings, find the value of λ that leads to a gain margin of 2.5. Also, find the value of λ that leads to a phase margin of 75°. Compare the time-domain closed-loop responses for these two systems (always include plots of the manipulated ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required