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.
出处
《上海理工大学学报》
北大核心
2017年第5期467-472,共6页
Journal of University of Shanghai For Science and Technology
关键词
无刷直流电机
自抗扰控制器
转矩脉动
抑制
brushless DC motor
active disturbance rejection controller
torque ripple
suppression
