Title :
An on-line PID control scheme for unknown nonlinear dynamic systems using evolution strategy
Author :
Park, Jin-Hyun ; Choi, Young-Kiu
Author_Institution :
Dept. of Electr. Eng., Pusan Nat. Univ., South Korea
Abstract :
The paper presents an on-line PID control scheme with varying gains for unknown nonlinear dynamic systems. For the on-line control, it is necessary to have an on-line identifier of the system, so that an identifier is constructed in the form of an autoregressive moving average (ARMA) model. In order to tune the parameters of the identifier and the gains of the PID controller efficiently, we propose a modified evolution strategy. Experimental studies show that the proposed on-line control scheme has robust control performance under unknown disturbance and noise
Keywords :
autoregressive moving average processes; identification; nonlinear control systems; optimisation; robust control; search problems; three-term control; PID controller; auto regressive moving average model; evolution strategy; gains; on-line PID control scheme; on-line system identifier; parameter tuning; robust control performance; unknown disturbance; unknown noise; unknown nonlinear dynamic systems; Control systems; Convergence; Evolutionary computation; Nonlinear control systems; Nonlinear dynamical systems; Optimal control; Optimization methods; Robust control; Search methods; Three-term control;
Conference_Titel :
Evolutionary Computation, 1996., Proceedings of IEEE International Conference on
Conference_Location :
Nagoya
Print_ISBN :
0-7803-2902-3
DOI :
10.1109/ICEC.1996.542698
