A single-phase spindle motor design for DVD application

A single phase brushless spindle motor with innovative design has been deve loped for application in a DVD drive. The methods used to reduce the coggin g torque and to improve the dynamic performance of this new design motor ar e proposed in this paper. The single phase brushless spindle motor is usual ly applied for cooling fan, pump and blower before the performance is impro ved by the reengineering process. The stator configuration and the drive ci rcuit have been remodeled in order to meet the requirements of the spindle motor used in the DVD applications.