基于奇异摄动和Luenberger观测器的PMLSM无传感器控制

Sensorless Control of PMLSM Using Singular Perturbation and Luenberger Observer

针对永磁直线同步电机直接驱动系统的双时间尺度特性,根据奇异摄动理论将直接驱动系统的数学模型分解得到快、慢两个电气子系统。由快变电气子系统模型采用L uenberger观测器构建快的位置估计器,通过慢变电气子系统构建慢的速度估计器。无位置传感器永磁直线同步电机闭环控制系统的计算机仿真结果表明,所提出的算法既该方法既具有较高的辨识精度又有相对少的计算量。能满足PML SM直接驱动系统无传感器实时控制需要。

PMLSM linear drive system have two-time-scale characteristic, so singular perturbation approach is applied to decomposed the nonlinear PMLSMs model into a fast electrical subsystem and a quasi steady-state system model. The fast electrical subsystem model is applied to construct position estimator, with the help of Luenberger state observer, the position is estimated strictly. And the quasi steady-state system model is used to estimated the PMLSM speed. A simulation of a sensorless PMLSM drive system shows that the proposed sensorless algorithm is effective.