关键词: 开关磁阻电动机, 瞬时转矩, 在线估算, 双线性插值, 扭矩传感器

Abstract:

A method for on-line instantaneous torque estimation of switched reluctance motors with micro controller was proposed to solve the problem that the torque sensor is expensive and increases the volume and complexity of the motor control system. Several flux linkage curves in the key positions were obtained, then the complete flux characteristics and torque characteristics were got by calculation. The instantaneous torque was calculated by using the bilinear interpolation method when the motor was running. The results with this method were compared with that of torque sensor so that the feasibility of the proposed method was verified.

Key words: switched reluctance motors (SRM), instantaneous torque, on-line estimation, bilinear interpolation, torque sensor