Auto-tuning of cascade control systems.
In this paper, a novel auto-tuning method for a cascade control system is proposed. By employing a simple relay feedback test, both inner and outer loop model parameters can be simultaneously identified. Consequently, well-established proportional-integral-derivative (PID) tuning rules can be applied to tune both loops. Compared with existing methods, the new method is simpler and yet more effective. It can be directly integrated into commercially available industrial auto-tuning systems. Some examples are given to illustrate the effectiveness and robustness of the proposed method.
Song
Sihai
S
School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798.
Cai
Wenjian
W
Wang
Ya-Gang
YG
D000401:Aircraft; D000465:Algorithms; D003198:Computer Simulation; D005246:Feedback; D016014:Linear Models; D011786:Quality Control; D012815:Signal Processing, Computer-Assisted; D013269:Stochastic Processes