Research on Dynamic Characterization of Permanent Magnet Contactor Based on Fuzzy Control

Abstract

This paper presents an optimization method for the dynamic characteristics of permanent magnet (PM) contactor based on fuzzy control. Firstly, The Dynamic characterization of PM contactor is analyzed. Secondly, fuzzy control model is established based on MATLAB. Finally, it is proved that this control method is feasible and effective. The simulation results show that the fuzzy control method can effectively optimize the dynamic characteristics of PM contactor. Introduction Compared with the traditional electromagnetic contactor, the PM contactor has the salient merits include energy saving and noise free [1, 2]. The research on the dynamic characteristics of the PM contactor has important theoretical and practical significance to improve the service life of PM contactor [3, 4]. For the dynamic characteristics of PM contactor, mainly focus on virtual prototyping technology [5-8], structure optimization [9, 10], and intelligent control [11-14]. Due to the structure between PM contactor and electromagnetic contactor is not the same, so many control methods cannot be used in PM contactor. This paper proposes a pulse width modulation (PWM) control method of PM contactor based on fuzzy control. The attraction and the reaction force of the PM contactor can achieve good coordination. And this control system reduces the velocity of the movable core and the energy of contacts impact. Fuzzy Control System Dynamic Mathematic Model. Before the moving contacts touches the static contacts, the mechanical movement equation of the movable core can be written as