PID Tuning Theory and Practice
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This post was last edited by Feng Shaohui on 2020-9-11 at 13:39. Recently, based on my research and field experience, I have compiled a document on the theory and practice of PID tuning; colleagues are welcome to review it. I carried out a series of tasks for PID tuning: 1. I studied the tuning guidelines ； 2: Developed tuning software ； 3: A related website was created ； 4: Created a WeChat official account: Ping Pong on PID. It is hoped that this series of efforts will improve the efficiency of asset control and enhance the PID tuning skills of field engineers.
We welcome more and more original works to be shared with everyone, so that we can learn together and improve together!
This is just a tentative attempt to stimulate further discussion; better articles are welcome to provide more guidance for field engineers
Perhaps the extraction isn’t thorough enough; let me summarize a few points: 1. Trial and error should also be carried out scientifically, based on the response curve； 2. An overly strong integral control for the liquid level is the cause of oscillations ； 3. Pressure control has a too weak proportionality within its range ； 4. The ZN method is not advisable; lambda tuning is recommended ； 5. Circuit problem analysis should be systematic ； 6. The calibration process should be standardized ； 7. Closed-loop performance should be considered comprehensively to avoid coupling effects.
For the actual tuning of PID, this book is recommended as it is practical. Analysis of Automatic Control Systems and PID Tuning, by Bai Zhigang. Published in 2012. Content summary: This book uses vivid language to explain in detail the methods for tuning PID parameters as well as how to develop control strategies for automatic control systems. The book guides readers step by step through understanding the meaning of PID parameters, the characteristics of their curves, and the methods for tuning them. It also includes mnemonic formulas summarized by the author, which are easy to remember and useful to apply. Subsequently, it illustrates in detail the formulation of control strategies and the practical use of parameter tuning through an example of an automatic control system in a thermal power plant. Finally, it covers the troubleshooting of peripheral devices in such automatic control systems. The author of \"Analysis of Automatic Control Systems and PID Tuning\" has worked in the field of automatic control systems for over twenty years, possessing a deep understanding of these systems as well as extensive practical experience. \"Analysis of Automatic Control Systems and PID Tuning\" is suitable for automation technicians in industries such as chemicals, mining, metallurgy, and instrumentation.