无刷直流电机换相转矩脉动抑制的研究  

Suppression of Brushless DC Motor Commutation Torque Ripples

作　　者：杨威[1] 郝润科[1] 高峰[1] 

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093

出　　处：《上海理工大学学报》2017年第5期467-472,共6页Journal of University of Shanghai For Science and Technology

摘　　要：分析了无刷直流电机产生转矩脉动的原因,设计了自抗扰控制器来抑制无刷直流电机的转矩脉动的发生.以控制器本身的状态观测器检测系统的相电流脉动,通过控制器本身的非线性状态反馈控制器对检测电流脉动误差值进行补偿,从而抑制电流的波动.采用双闭环控制抑制转矩脉动的发生.仿真结果表明,设计自抗扰控制器抑制了系统干扰引起的超调量.反馈能够完全地被快递跟踪.设计的控制系统使无刷直流电机的转矩脉动值为9%左右.因此,自抗扰控制系统能够更好地抑制无刷直流电机转矩脉动的产生.The causes of the torque ripples of a brushless DC motor(BLDCM)were analyzed and an active disturbance rejection controller(ADRC)was designed to control the torque ripple reduction of the brushless DC motor.A state observer of the controller was adopted to detect the phase current ripple of the system.And the offset value of the detected current ripple deviation was compensated by the non linear state feedback control rate of the controller to achieve the suppression of current ripple,which forms a BLDCM double closed loop control system to achieve the suppression of torque ripple.The simulation results show the value of torque ripple of the brushless DC motor designed is9%.The ADRC eliminates the overshoot generated by the system and the feedback can be fully and smoothly tracked.In short,the designed ADRC can better suppress the pulsation of the torque by compensating the offset of the current ripple error.

关 键 词：无刷直流电机 自抗扰控制器 转矩脉动 抑制 

分 类 号：TH166[机械工程—机械制造及自动化] TG659[金属学及工艺—金属切削加工及机床]