盘式实心异步磁力耦合器的调速关系分析  

Analysis of the Adjustable-speed Relationship of Axial-flux Solid Asynchronous Magnetic Coupler

作　　者：杨超君[1] 袁爱仁 张小锋[1] 吴盈志 柳康 

机构地区：[1]江苏大学机械工程学院,江苏镇江212013

出　　处：《机械传动》2017年第12期36-42,共7页Journal of Mechanical Transmission

基　　金：江苏省自然科学基金(BK20131254);江苏省六大人才高峰项目(2015-ZBZZ-020)

摘　　要：气隙厚度对磁力耦合器的运行至关重要,通过改变气隙厚度实现耦合器的调速功能具有重要意义。为了研究盘式实心异步磁力耦合器的气隙厚度与调速性能之间的关系,结合等效磁路法与磁路的基尔霍夫定律建立了轴向充磁的耦合器模型。通过对模型进行解析计算得出耦合器的磁路参数,再结合三维修正系数与转矩公式得到耦合器的转矩表达式。此外,在恒转矩负载调速下,结合转矩表达式推导出气隙厚度与转差率的关系,得到调速关系式,从而研究得到盘式实心异步磁力耦合器的调速关系。利用Matlab对转矩表达式和调速关系式进行离散化求解,并用有限元仿真及实验进行对比分析,验证了调速关系在理论计算上的正确性,并为耦合器实现精确调速提供了理论依据。The air - gap thickness is crucial to the operation of magnetic couplers, and it is of great signif- icance for realizing speed adjustment of couplers through changing air - gap thickness. In order to investigate the relationship between air - gap thickness and adjustable - speed performance of axial - flux solid asyn- chronous magnetic couplers, a model for axial -flux magnetic couplers is established by combining equivalent magnetic circuit approach and Kirchhoff？ s law of magnetic circuit. The magnetic circuit parameters of couplers are solved by utilizing the method of analytical calculation on the above model, then, the torque expression is obtained by integrating three -dimensional correction coefficient and torque formula. Moreover, by synthesizing the torque expression under constant torque load condition, the relationship between air -gap thickness and slip is derived, which is beneficial for acquiring the adjustable - speed relationship of axial - flux solid asynchronous magnetic couplers. The Matlab is used to solve the discretization of torque expression and adjustable ＂-- speed re- lationship, besides, the finite element simulations and experiments are also employed in the contrast and analy- ses, the accuracy of theoretical calculation is verified and the theoretical foundation for realizing precise speed adjustment of couplers is provided.

关 键 词：盘式实心异步磁力耦合器 气隙厚度 调速关系式 离散化求解 有限元仿真 

分 类 号：TH139[机械工程—机械制造及自动化]