Characteristic analysis of 5-phase hybrid stepping motor considering the saturation of both teeth and poles

The paper presents the characteristic analysis methodology for 5-phase hybrid stepping motors used for electromagnetic incremental-motion actuators. The approach is based on the use of an equivalent magnetic circuit taking into account the localized saturation throughout the hybrid stepping motor. Lumped circuit parameters are calculated using the nonlinear finite element analysis for a given geometry and the neural network is used to map a change of parameters and predicts their approximation. Therefore, the proposed method efficiently improves the accuracy of analysis by using the parameter characterizing localised saturation effects and reduces the computational time by using the neural network. An improved circuit model of 5-phase hybrid stepping motors is presented and its application is provided to demonstrate the effectiveness of the proposed method.