无刷直流电动机的模糊积分变结构控制

Fuzzy integral variable structure control of brushless DC motor drivers

分析了无刷直流电动机(BLDCM)的数学模型,设计了一种新型高性能的模糊积分变结构位置控制器。该控制器兼有模糊控制和积分变结构控制的优点,解决了积分变结构控制需要事先测定扰动量范围的问题,降低了系统的抖振,在保证系统稳定性的同时加快了系统响应速度,并且保持了积分变结构控制对参数变化及扰动不灵敏的特性。最后通过Matlab进行了仿真。仿真结果表明,该控制器较积分变结构控制器具有更好的动、静态特性,并具有较高的精度和鲁棒性。

Based on the analysis of the brushless direct current motor （BLDCM） mathematical model, a novel fuzzy integral variable structure position controller which combined the merits of fuzzy control and integral variable structure control was presented. The need for the bound of disturbance in integral variable structure control was relaxed, the chattering was reduced and fast speed response under system stability was achieved, Moreover, the insensitivity to uncertainties and disturbances was maintained, Finally, the simulation shows that the proposed method has better dynamic and static characteristic than variable structure control, and has high precision and robustness.