基于磁路优化的伺服电机制动转矩提高方法研究

Research on the Method of Improving the Output Torque of the Brake in the Servo Motor Based on Optimization of Magnetic Circuit

本文提出一种伺服电机制动器输出转矩提高方法,从电磁力及输出转矩解析式出发,推导了磁阻与制动转矩的关系,并利用有限元软件建立制动器三维模型,发现可以采用磁路优化的方法提高电机制动器电磁力和输出转矩。通过优化制动器定子磁轭和动子磁轭的磁密分布,提出一种定子磁轭凸起结构设计和动子磁轭与轮毂耦合设计方法,最终使电机制动器电磁力提高26.3%,制动转矩提高15.7%。

This article proposes a method of raising the output torque of the brake.Starting from the analysis of the electromagnetic power and output torque,it derives the relationship between magnetic resistance and braking torque,and use finite element software to establish a three–dimensional brake model,It is found that the method of optimization of magnetic circuit can be used to improve the electromagnetic power and output torque of the brake.Through the analysis of the magnetic field density at the bottom of the stator,this article put forward a design of raised structure of stator and a design method of Coupled design of dynamic core and rotor wheel.Finally,The electromagnetic force of the brake was increased by 26.3%,and the output torque increased by 15.7%.