基于等效磁路法的平动式啮合电动机静态转矩求解  

An improved magnetic equivalent circuit method for predicting static torque of a translational meshing motor

作　　者：徐强[1] 廖启征[1] 魏世民[1] 黄昔光[1] 

机构地区：[1]北京邮电大学自动化学院,北京100876

出　　处：《北京化工大学学报（自然科学版）》2008年第2期76-81,共6页Journal of Beijing University of Chemical Technology(Natural Science Edition)

基　　金：教育部博士点基金(20050013006);国家863专项(2007AA04Z211)

摘　　要：阐述了平动式啮合电动机的结构和工作原理并采用等效磁路法建立了平动式啮合电动机的准线性分析模型。通过分析电机二维磁场分布和考虑电机特殊的电磁结构,提出了用三种磁通管单元来近似磁场分布,并借用磁力线和等磁位线互换的方法,将磁力线分布不均匀的磁通管引入到分析模型中,有效的处理了平动式啮合电动机中的磁场分布不均匀和磁路局部饱和,使分析模型得到简化并兼顾了求解精度。其静态转矩计算结果与有限元结果相吻合,验证了分析模型的合理性和准确性,表明该模型可以作为平动式啮合电动机结构优化设计的有效分析手段。The structure and operating principles of a translational meshing motor are discussed. With experience gained from the Finite Element method （FEM）, a quasi-linear model based on the Magnetic Equivalent Circuit （MEC） method has been used to obtain the static torque of the motor. Three types of magnetic tubes are employed in the model, and through the exchange principle of magnetic lines of force and magnetic equipotential line, the tube in which the flux distribution is non-uniform is applied to the model. Through these measures, the local saturation of the motor is treated and the model is simplified. Compared with the FEM model, the new model is shown to be more accurate and efficient, and it can be used to optimize the structure design of a translational meshing motor.

关 键 词：平动式啮合电动机 等效磁路法 准线性模型 磁通管 静态转矩 

分 类 号：TM302[电气工程—电机] TM359.9