摘要
针对永磁同步电机在一些高要求的应用场合,如恶劣环境对电机的大小有要求和抗干扰等需要采用无传感器控制,在没有传感器的情形下仍然要高精度估算出转子的位置和速度,传统的扩展卡尔曼滤波在电机刚启动和负载发生变化时会存在跟踪误差,这个误差会影响下一次的估计,单纯依靠对Q、R矩阵的取值不能根本解决问题。因此,采用对扩展卡尔曼滤波器的校正环节进行改进,以及采用龙伯格负载转矩观测器进行前馈补偿,使电流调节器可以快速做出反应进行前馈补偿,进而提高扩展卡尔曼滤波器的跟踪能力和抗扰动能力。
For permanent magnet synchronous motor in some higher requirements,such as the environment is bad,have requirements on the size of the motor and anti-interference environment requires a sensorless control,under the situation of no sensor is still to high accuracy estimate the rotor position and speed,the traditional extended kalman filter has just started in motor and load change when the tracking error,This error will affect the next estimates,simply rely on the value of Q and R matrix will not solve the problem,therefore,the correction of the processes involved in extended kalman filter was improved,and the dragon′s load torque observer is adopted to improve the feedforward compensation,make the current regulator can quickly respond to feedforward compensation,Then the tracking ability and anti-disturbance ability of the extended Kalman filter are improved.
作者
姜畅畅
贾洪平
JIANG Chang-chang;JIA Hong-ping(School of Electrical and Information Engineering,Jiangsu University,Zhenjiang 212013,China;Key Laboratory of Jiangsu Province,Jiangsu University,Zhenjiang 212013,China)
出处
《组合机床与自动化加工技术》
北大核心
2023年第1期46-49,共4页
Modular Machine Tool & Automatic Manufacturing Technique
