For the power in case of a power failure, backelectromotiveforce of a spindle motor can be utilized.
对于在电源故障情况下的电力，可利用主轴电机的反电动势。
2
At first we established a test platform, making parameters adjustment of the electric machinery, testing In-Wheel-Motor backelectromotiveforce, torque and the nt curve.
首先搭建了试验平台，对电机进行了参数调节，测试了轮毂电机的反电动势、转矩和NT曲线。
3
On this basis, backelectromotiveforce without load and with load is researched, simulated and analyzed, and cogging torque is analyzed and calculated in different dimensions of magnetic steel.