Finite Element Analysis on Small External Rotor Brushless DC Motor

In this paper,Carried on the finite element analysis to a permament magnet brushless DC motor using for precision instruments.The proposed motor is specical for its exterior rotor structure,which can realize the direct drive.Then it can be operated in low-speed,high-torque,and high efficiency.The paper's emphasis lied on the analysis of magnetic induction intensity and torque with the aid of Microsoft Visual C+ + 6.0 software,to get various characteristic curves.