Structure of fuzzy PID controllers
Zheng Xue · 2000
In order to improve the property of ordinary two\|dimentional fuzzy controller, we not only propose a systematic study of one to three input fuzzy inferences that can realize the function of PID,but also analyse and study the system itself. The paper proposes three criteria to evaluate the functional behaviors of controllers to compare the performance of these controllers, namely, control\|action composition, coupling influence and gain dependence. Based on a simple analysis, we conclude that there are two best inference structures with respect to the three functional criteria. Furtherly,the two best inference structures can realize the individual adjustment of three gains (proportional, integral and derivative). Consequently the paper solves the problem of geometric series on fuzzy controller.