摘要
为了改进无刷直流电机(BLDC)无位置传感器控制系统的性能,提出了一种新型自适应滑模观测器对转子位置与转速进行估计,该观测器构建了一种新型切换函数代替传统符号函数,使得控制系统不必外加低通滤波器和相位补偿模块就可以获得平滑的线反电动势观测值,进而得到转子位置。应用李雅普诺夫(Lyapunov)稳定性理论,设计模型参考自适应算法对转速进行估计,该自适应算法不受切换纹波的影响。仿真和实验表明,所提方法能够准确估计无刷直流电机线反电动势及转速,有效地抑制了转矩纹波,提高了整个系统的稳定性、快速性及鲁棒性。
To improve the brushless DC motor without position sensor control system, a new adaptive sliding mode observer was put forward to estimate rotor position and rotating speed, in which, a new type of switching function instead of traditional symbol function was constructed, a smooth line back EMF waveform measurement was obtained without low pass filter and phase compensation module, and then the rotor position was gotten. Based on Lyapunov stability theory, model reference adaptive algorithm was designed to estimate speed, and not affected by the switching ripple. Simulation and experiment results show that proposed method can accurately estimate the rotor position and speed, effectively restrain the torque ripple, improve the stability, rapidity and robustness of the whole system.
作者
杨沛豪
王晓兰
刘向辰
寇水潮
高峰
范乐
YANG Peihao;WANG Xiaolan;LIU Xiangchen;KOU Shuichao;GAO Feng;FAN Le(Xi’an Thermal Power Research Institute Co.,Ltd.,Xi’an 710054,Shaanxi,China;College of Electricaland Information Engineering,Lanzhou University of Technology,Lanzhou 730050,Gansu,China;College of Automation and Information Engineering,Xi’an University of Technology,Xi’an 710048,Shaanxi,China)
出处
《电气传动》
北大核心
2019年第4期6-10,共5页
Electric Drive
关键词
无刷直流电机
滑模观测器
切换函数
模型参考自适应算法
brushless DC motor (BLDC)
sliding mode observer
switching function
model reference adaptive algorithm
