Title :
Relay feedback PID auto-tuning: algorithm and application
Author :
Wu Gang ; Zhang, Zhigang ; Xue, Meisheng ; Zhou, Bin ; Sun, Demin
Author_Institution :
Dept. of Autom., Univ. of Sci. & Technol. of China, Hefei, China
Abstract :
Describe a PID auto-tuning algorithm based on relay feedback. By placing test signals on the process to make it surge stably and continuously, we can obtain the process data with which to calculate the critical gain and critical surge period, then proper PID parameters can be computed with the improved Ziegler-Nichols formula. Some software based on this algorithm has run successfully on some large industrial equipment for over 7 years
Keywords :
feedback; process control; relay control; three-term control; tuning; critical gain; critical surge period; improved Ziegler-Nichols formula; relay feedback PID auto-tuning; test signals; Automation; Feedback; Process control; Relays; Signal processing; Surges; Testing; Three-term control;
Conference_Titel :
Intelligent Control and Automation, 2000. Proceedings of the 3rd World Congress on
Conference_Location :
Hefei
Print_ISBN :
0-7803-5995-X
DOI :
10.1109/WCICA.2000.863042
