Design Analysis and Test Method for Permanent Magnet(PM) DC Motor Based on the Finite Element Method(FEM)

　　Design Analysis and Test Method for Permanent Magnet(PM) DC Motor Based on the Finite Element Method(FEM)
　　Permanent Magnet(PM) DC motor is used on vehicle broadly. Design of motor will affect comfortable performance of vehicle.From the basic motor and electromagnetic field theory, the performance and parameters of PM DC motors are investigated using neodymium magnets Finite Element Method(FEM) analysis. It is useful for solution of noise and EMC. The research work is very important.Electromagnetic field analysis method and model is introduced.Analysis examples with FEM software which named Infolytica Magnet.Design different thickness magnet of motor, get magnetic field chart and gap wave which had been improved. And then analysis gap density wave of brush movement,to reduce electric magnet noise.Finally, by using noise chamber and frequency http://www.chinamagnets.biz analysis equipment,validate magnet optimization.And by using EMC test, know brush movement is good.The application in product had favourable effect.