Optimization of Permanent-Magnet Spherical Motor Based on Taguchi Method

The finite-element model is established to simulate electromagnetic forces of a permanent-magnet (PM) spherical motor using the commercial software from Ansoft. The Taguchi method is used to optimize the magnetic field density in the radial air gap and the maximum torque of the PM spherical motor. The final optimization parameters are determined by a response surface method (RSM). The simulation results of the optimized motor are compared with those of the original motor to show that the output performances of the optimized motor have improved greatly, which verifies the effectiveness and practicability of the Taguchi method on the optimization of the PM spherical motor.