摘要
采用扩展卡尔曼滤波器(EKF)在估算永磁同步电动机(PMSM)转子位置以及转速时,协方差参数的确定一直是一个难点,必须通过多次仿真实验才可以确定,本文提出了一种基于标幺制的参数调试方法,只需要在一定范围内调试两个参数,即可确定协方差矩,阵保证系统稳定工作。
In traditional extended Kalman filter (EKF) technology for rotor speed and position estimation of permanent magnet synchronousmotor (PMSM), the choice of the EKF covariance matrices is nodus,generally obtained with trial-and-error.A tuning method based on the per-unit system of the EKF algorithm representation is presented in the paper. In this way, covariance matrices are obtained by tuning two parameters in definite range, so as to ensure the system operating steady.
出处
《电气技术》
2008年第9期30-33,共4页
Electrical Engineering
