基于光栅编码器对开关磁阻电机的位置和速度的检测

Position and Speed Detection of Switched Reluctance Motors Based on Grating Encoder

采用高精度光栅编码器对开关磁阻电机中转子相对于定子的位置信号和转速信号进行检测,通过位置信号来判定电机的正反转及三相的开通顺序,用改进M/T法对电机测速,通过单片机来实现。结果表明,具有测量精度高、测速范围广,并且具有高稳定性,成本低廉,易实现等优点。

A high-precision grating encoder is adopted to detect the position signal of the rotor of the switched reluctance motor in relation to its stator as well as the signal of rotation speed. The position signal is used to determine the forward / reverse rotation of the motor and the opening sequence of the three-phase. The improved M / T method is used on single-chip microcomputer to test the motor rotation speed. The results show that this method has such advantages as high measuring accuracy,wide range of speed measurement,high stability,low cost and easy implementation.