直线往复运动的磁力感换挡设计与研究

Design and Research on Magnetic Force Shift of Linear Reciprocating Motion

当前市场上和开发中的换挡器的换挡手感提供结构大部分为齿型槽形状的挡位感模块加弹簧顶子弹头来模拟换挡力,结构复杂,挡位感模块开模后换挡力很难再进行调整;由于取力结构受齿形槽轮廓度影响,故对模具精度、表面质量要求较高,增加模具成本,影响模具使用寿命。研究利用磁场作用力提供直线往复运动的换挡手感,并利用高性能稀土永磁材料构造一种换挡手感提供平台。根据等效磁荷理论,建立磁铁之间相互作用力的数学模型,根据磁铁之间相互作用力的数学模型以及目标换挡力,通过电磁仿真选定一组合适的磁铁进行样件制作。最后通过试验验证了搭建的数学模型的正确性。

The shift feeling of the shifters currently on the market and under development provides a gear-sense module with a gear-slot-shaped structure and a spring-top bullet to simulate the shifting force.It is difficult to adjust the blocking force.Since the force take-off structure is affected by the profile of the tooth groove,it has higher requirements on the precision and surface quality of the mold,which increases the cost of the mold and affects the service life of the mold.The use of magnetic field force was studied to provide the shift feel of linear reciprocating motion,and used high-performance rare earth permanent magnet materials to construct a shift feel providing platform.According to the equivalent magnetic charge theory,the mathematical model of the interaction force between the magnets was established.According to the mathematical model of the interaction force between the magnets and the target shifting force,a set of suitable magnets were selected for sample production through calculation and simulation.Finally,the mathematical model was verified by experiments.