An improved adaptive fuzzy PID controller for PMSM and a novel stability analysis method

摘要

Adaptive fuzzy PID controllers, combining fuzzy controllers which are highly adaptable with conventional PID controllers which have no control error, have been used in vector control systems of permanent synchronous machines (PMSM). In this paper, an adaptive fuzzy PID controller of which membership functions are dramatically improved is designed and applied to a PMSM. Then, simulation in Simulink and practical experiment verify that the controller is well-suited for the system. Finally, a novel stability analysis method for those systems based on adaptive fuzzy PID is proposed and it proves that the PMSM control system in this paper is stable.