摘要
提出了一种将Ｋａｌｍａｎ最优估计原理应用于永磁同步电机(ＰＭＳＭ)无速度传感器调速系统的方案。采用α－β坐标系,对电机非线性方程进行线性化,并利用扩展Ｋａｌｍａｎ滤波原理,对永磁电机的转角θ和转速ω进行实时在线最优估计,对电机ｄ－ｑ轴电流进行控制,很容易实现电机调速,不断修正估计转速ω,使其始终与实际转速保持一致。
A system scheme permanent magnet synchronous motor driver(PMSM) speed control adopting theory of Kalman optimum estimation is proposed. The linearization of nonlinear equation is carried by α-β reference frame and thereal-time optimal estimation online of rotor position θand speed ω of PM utilizing Extended Kalman(EKF) filter. A advantage of this idea is realization of speed control which needs only terminal voltage and phase current of motor driver through d-q reference frame, continual correcting assessment of speed ω to make it keep in line with real speed ω.
出处
《电气传动自动化》
2001年第6期3-6,共4页
Electric Drive Automation
