平动式啮合电动机优化设计方法

Optimization design method for translational meshing motor

针对平动式啮合电动机在结构设计上缺乏理论指导,物理样机性能低下的问题,利用等效磁路法和能量关系,提出了基于电动机效率与磁极结构参数的优化设计方法。在给定磁极几何参数、功率与转速条件情况下进行了算例优化计算分析,并将优化计算结果应用在新型平动式啮合电动机结构参数设计与制作中。物理样机试验结果表明:忽略机械传动机构损耗后测得的样机最大效率与理论设计结果较为接近,且经过参数优化的平动式啮合电动机与未经优化设计的平动电动机相比,在效率、转矩及转矩重量比上有较大提升,尤其在功率密度上增加了15～20倍,试验结果表明了该优化设计算法的有效性。

For the deficiency of theoretical guidance on translational meshing motor construction design and low performance of prototype, the optimal design method based on efficiency and structure parameters is established with magnetic equivalent circuit method and energy relation. A translational meshing motor was designed and manufactured using the optimization results from a calculation example optimization a- nalysis under given condition of geometric parameter, power and speed. The experimental results demon- strate that the maximum efficiency neglected mechanical loss from experiment is corresponding with opti- mization calculation results. Compared with original translational meshing motors, the optimized transla- tional meshing motor has higher efficiency, torque and torque to weight ratio, especially the power density increased 15 -20 times. The experimental results indicate the effectiveness of the optimal design algo-