Optimization Technology of Finite Element Stepper Motor Based on Parametric Modeling

Since the electromagnetic torque of hybrid stepper motor (HSM) is generated by the cogging effect, the change of tooth geometric parameters has a great influence on its performance. When the finite element software is used for optimization, the modeling workload is large. In this paper, the HSM parametric simulation model is established based on ANSYS software, and the geometric parameters of the tooth can be adjusted to improve the efficiency of the optimization design. Based on the parametric simulation model, the influence of the tooth width angle pitch angle ratio of the rotor and stator and the change of the stator pitch angle on the cogging torque and the holding torque is analyzed, and the tooth geometry parameters that take into account the waveform and amplitude of the holding torque are obtained.