摘要：为提高平板型直线永磁齿轮的性能，文章提出了凸极式永磁动子、磁阻动子与带永磁激励的磁场调制层三种拓扑结构，并应用此3种结构建立了8种平板型直线永磁齿轮模型进行优化设计，同时通过二维有限元分析计算其推力-位移特性、最大输出推力等性能。研究表明，凸极式永磁动子与带永磁激励的调制层可以有效提升磁齿轮的传输推力。其中，凸极式永磁动子可明显提高每单位有效永磁体下的推力密度，带永磁激励的磁场调制层可明显提高每单位有效总体积下的推力密度。最后，文章针对不同的应用场合，得出两种综合性能最佳的模型，为实际应用提供了借鉴。
关键词：平板型直线永磁齿轮；凸极式永磁动子；磁阻动子；带永磁激励的磁场调制层

Abstract: To enhance the performance of flattype linear permanent magnet gears, a consequentpole permanentmagnet (PM) mover structure, a reluctance moverstructure and a PMexcited field modulation layer structure for the flattype linear PM gears were proposed. Eight topologies with various structures were thus derived and optimally designed. Forceposition characteristicsand pullout force were calculated with 2D finite element method.Results indicate that the consequentpole PM mover structure and the PMexcited field modulation layer structure were effective to improve the gear transmission force. In addition, the consequentpole PM mover structure can improve the thrust density per effective PM volume, and the PMexcited field modulation layer structure can improve the thrust density per effective total volume. Finally, two prototypes with good comprehensive performance were demonstrated for prospective applications.
Key words: flattype linear PM gear;consequentpole PM mover; reluctance mover;PMexcited field modulation layer