Calculation and Analysis of Magnetic Field and Torque Characteristics for 3-DOF Deflection Type PM Motor
Li Zheng, Wang Qunjing2, Xue Zengtao1, Wang Qunjing2
1. School of Electrical Engineering Hebei University of Science and Technology Shijiazhuang 050018 China; 2. National Engineering Laboratory of Energy-Saving Motor & Control Technique AnhuiUniversity Hefei230601 China;
Abstract：The PM rotor multiple-DOF motors can realize multiple-DOF motion of output shaft and greatly simplify the mechanical structure while improving the response speed and positioning accuracy of transmission systems. Therefore, it has become a research hotspot at home and abroad in the motor field. This paper proposes a 3-DOF deflection type PM motor with butterfly shape rotor structure and builds its finite element model based on the finite element method. The magnetic field distribution of the motor are analyzed and calculated, then compared and validated with the results by analytical method. Based on the above, the spin rotation torque and deflection torque of this motor are calculated and analyzed. The results are also compared and analyzed with the magnetic field and torque of 3-DOF deflection type PM motor with drum shape rotor structure, which shows that the new structure can effectively enhance the flux density and torque magnitude of spin rotation, improve the deflection torque magnitude and its deflection range. Finally, the prototype is measured and the experiment results have been compared and validated with the results by finite element and analytical models.
李争, 伦青青, 薛增涛, 王群京. 永磁转子偏转式三自由度电机磁场和转矩特性的计算与分析[J]. 电工技术学报, 2017, 32(23): 81-90.
Li Zheng, Wang Qunjing, Xue Zengtao, Wang Qunjing. Calculation and Analysis of Magnetic Field and Torque Characteristics for 3-DOF Deflection Type PM Motor. Transactions of China Electrotechnical Society, 2017, 32(23): 81-90.
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2017, Vol. 32 
