摘要
永磁同步电机矢量控制系统中,PI控制器对永磁同步电动机参数变化敏感,严重影响控制性能。对传统滑模观测器(SMO)进行改进,使得增益随电机参数自适应变化,将SGN函数改成连续函数SIGN函数,设计Super_twisting控制器,在实现转速估计的同时,进一步减小系统的误差。仿真表明,自适应增益观测器能够准确地观测转速和位置,与PI控制相比,基于Super-twisting滑模控制器的电机转矩和转速脉动减小,响应速度更快。
In PMSM vector control system,PI controller is sensitive to the change of PMSM parameters,which seriously affects the control performance.The traditional sliding mode observer(SMO)was improved,it's gain varies with the motor parameters,which realizes the speed estimation.The sgn function was changed to a continuous function the sign function.Super-twisting controller was designed to further reduce the error of the system.Simulation results showed that the adaptive gain observer can accurately observe the speed and position of the motor.Compared with the PI controller system,the motor torque and speed pulsation decreased and the response speed was faster with the super-twisting sliding mode controller.
作者
熊化亮
沈艳霞
XIONG Hua-liang;SHEN Yan-xia(Engineering Research Center of the Ministry of Education for Internet of Things Technology,Jiangnan University,Wuxi 214122,China)
出处
《微特电机》
2020年第9期50-53,57,共5页
Small & Special Electrical Machines
关键词
永磁同步电机
矢量控制
滑模观测器
super-twisting滑模控制器
自适应增益
permanent magnet synchronous motor(PMSM)
vector control
sliding mode observer(SMO)
super-twisting sliding mode controller(ST-SMC)
adaptive gain(AG)
