摘要：以开关磁阻电机调速系统为研究对象，针对传统传感器检测位置所存在的可靠性和复杂性问题，提出一种开关磁阻电机无位置传感器控制策略。该控制策略以转子位置和转速作为状态变量，以实测电流和估计电流的偏差作为滑模面，构建滑模观测器进行转子位置辨识和转速预估。由于开关磁阻电机本身的非线性特征，滑模观测器的不连续控制相比其他状态观测器能够很好的适应这种非线性，增强了系统的鲁棒性。最后基于Matlab/Simulink的仿真分析与实验结果验证了所提方案的有效性与可行性。

关键词：开关磁阻电机；无位置传感器；滑模观测器；转子位置辨识
Abstract: In view of the reliability and complexity problem of traditional position sensors, this paper took the speed control system of switched reluctance motor as its research object, and put forward a kind of switch reluctance motor position sensorless control strategy. In this control strategy, the position and speed of rotor were taken as state variable and the deviation of measured current and estimated current is taken as sliding mode surface, a sliding mode observer is constructed to identify the position of rotor and to estimate the speed of rotor. Due to the nonlinear characteristics of switched reluctance motor, discontinuous control of sliding mode observer can be better adapted to this kind of nonlinear control compared to other state observers, which enhances the robustness of this system. Finally, Matlab/Simulink simulation analysis and experimental results verified the effectiveness and feasibility of the proposed method.

Key words: switched reluctance motor; position sensorless; sliding mode observer; identification of rotor position