Adaptive PID Controller Design Method based on PSO

摘要

Although the classical PID controller is most widely and successfully used in engineering systems, the existing challenges focus on the parameters tuning problem of PID. The aim of this paper is to give an optimal parameters tuning method of PID. An adaptive PID controller is proposed by auto-tuning the parameters of PID controller to guarantee satisfactory performance in the frequency domain, which is more convenient for engineer. The parameters optimization of the adaptive PID controller is accomplished by PSO, which achieves the control goals through the fitness function design based on the desired phase margin and the amplitude margin. The feasibility and effectiveness of the method is verified by the simulation of the hypersonic vehicle in the pitch plane.