Hybrid Fuzzy Fed PID Control of Nonlinear Systems
Ahmad Elkhateb, Basil Hamed · Research Portal (Queen's University Belfast) · 2010
Hybrid Fuzzy Fed PID Control of Nonlinear Systems A new method of Proportional-Integral-Derivative (PID) controller is proposed in this paper for a hybrid fuzzy PID controller for nonlinear system. The important feature of the proposed approach is that it combines the fuzzy gain scheduling method and the fuzzy fed PID controller to solve the nonlinear control problem. The resultant fuzzy rule base of the proposed controller can be divided into two parts. In the upper part, the gain scheduling method is incorporated with a mamdani fuzzy logic controller to linearize the nonlinear system. In the lower part, a fuzzy fed PID controller is derived for all the locally linearized systems. The simulation results of a nonlinear system show that the performance of the fed PID hybrid fuzzy controller is better than that of the conventional fuzzy PID controller.