Workshop for Flipped Class Based on students having completed the Chapter 9 e-Lesson before class Chapter 9 PID Controller Tuning for Dynamic Performance Copyright © Thomas Marlin 2016

Workshop 1 – Tuning Rules of Thumb CHAPTER 9: PID TUNING Workshop 1 – Tuning Rules of Thumb Imagine that you are shipwrecked on an island and that you do not have your textbook or lecture notes! Naturally, you want to tune some PID controllers in a chemical process. Review the tuning charts and develop some rough guidelines for tuning that you will remember for the rest of your life. We see that you have been shipwrecked on an island. You want to tune some loops, but you don’t have an internet connection or any other reference material. Have you memorized the tuning charts? Not likely.   To be prepared for this situation, you are asked to develop a simple rule for tuning a proportional-integral (PI) controller. When you have your answer, please advance to the next slide. Tropical paradise but no textbook or internet connection.

Workshop 3 – Diagnosis Feedback Control Performance CHAPTER 9: PID TUNING Workshop 3 – Diagnosis Feedback Control Performance Diagnose the closed-loop dynamic responses for four different tunings on the same process. Use the diagnosis tables introduced in this lesson for each of your solutions. Note: The process dynamics are from Workshop 2.

Workshop 3 – Diagnosis Feedback Control Performance CHAPTER 9: PID TUNING Workshop 3 – Diagnosis Feedback Control Performance A B C D

CHAPTER 9: PID TUNING Workshop 5 – Retuning On Monday, we tuned the three-tank mixer composition controller. On Friday, we anticipate reducing the feed flow rate by slightly more than 50% (from 7.0 to 3.0 m3/min) and keep this flow for the next two weeks. During the next two weeks, should we change the tuning of the controller? If yes, which constants, increase or decrease each constant, and by how much? solvent pure A AC FS FA

The fundamental model of the process  1/FB  1/FB

Workshop 4. Tuning for Fired Heater CHAPTER 9: PID TUNING CHAPTER 9: PID TUNING Workshop 4. Tuning for Fired Heater Determine the dynamic model and PI tuning using the empirical data presented in this figure T