摘要
为提高永磁同步电机无传感器控制系统的控制性能和抗干扰能力,提出一种改进型滑模观测器无传感器鲁棒控制方法。该方法引入双曲正切函数替代传统滑模观测器的开关函数,并采用锁相环技术对转子状态信息进行提取,以削弱观测器的抖振效应和提高转子状态估计精度;为抑制转子状态估计误差和不同负载工况等干扰,提高无传感器控制系统的整体性能,设计速度环自抗扰控制器来替代传统的PI调节器。控制系统仿真结果表明:相比传统方法,该方法不仅能有效抑制抖振,提高转子状态的估算精度,而且进一步提高了电机无传感器转速跟踪控制的性能和鲁棒性。
A sensorless robust control method based on an improved sliding mode observer is proposed to improve the sensorless control performance and anti-interference ability of permanent magnet synchronous motor.Firstly,the hyperbolic tangent function is used to replace the switching function of the traditional sliding mode observer.Secondly,the phase-locked loop technology is also used to extract the rotor state information so as to restrain the chattering effect of the observer and improve the estimation accuracy of rotor state.Then,an active disturbance rejection controller of speed-loop is designed to replace the traditional PI controller so as to improve the overall performance of the sensorless control system by reducing estimation errors and disturbance of different loading conditions.The simulation results of sensorless control system show that this method can not only suppress chattering and improve the estimation accuracy of rotor state effectively,but also further improve the sensorless speed-tracking control performance and robustness.
作者
王丽
高远
袁海英
WANG Li;GAO Yuan;YUAN Haiying(School of Electrical,Electronic and Computer Science,Guangxi University of Science and Technology,Liuzhou 545616,China;Guangxi Key Laboratory of Automobile Components and Vehicle Technology(Guangxi University of Science and Technology),Liuzhou 545006,China)
出处
《广西科技大学学报》
2022年第2期48-53,68,共7页
Journal of Guangxi University of Science and Technology
基金
广西自然科学基金项目(2014GXNSFBA118284,2013GXNSFAA019351)
广西高校中青年教师基础能力提升项目(2017KY0360)
广西汽车零部件与整车技术重点实验室开放课题(2015KFZD03)资助。
关键词
永磁同步电机
改进型滑模观测器
自抗扰控制
鲁棒性
估计精度
permanent magnet synchronous motor
improved sliding mode observer
active disturbance rejection control
robustness
estimation accuracy
作者简介
王丽,在读硕士研究生;通信作者:高远,教授,硕士生导师,研究方向:电机控制及应用,E-mail:gxgaoy98@21cn.com。
