| Summary: | 碩士 === 國立高雄應用科技大學 === 國際企業管理與製造產研碩外專班 === 99 === ABSTRACT
This thesis presents the development of a 1.5mm-diameter micro permanent magnet synchronous motor with distributed windings. By using distributed windings, the motor has higher output torque and smaller step angle comparing to prior concentrated winding design. The distributed winding coil are made using flexible printed circuit broad. The stator is fabricated by electroforming shell on top of the circularly rolled printed circuit broad. This electroforming step can simplify the fabrication of micro motors. The new controller is designed and implemented for this motor. The three-phase motor has an outer diameter of 1.5mm, overall length of 5.6mm, shaft of 0.3mm, and step angle of 60 degrees. The motor achieves a maximum speed of 11,000rpm and a maximum torque of 0.745μNm with input current of 0.7A. The motor performance could be further enhanced by improving assembly process and bearing friction.
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