电动机——复合材料连杆机构系统的动态响应

Dynamic Response of A Motor-mechanism System with Links Fabricated from Three-dimensional Braided Composite Materials

以三相交流电机———含三维编织纤维复合材料构件的连杆机构系统为研究对象,根据电机轴存在横振和扭振这种普遍情形以及三维编织复合材料的细观结构及特点,应用有限单元法建立了包含复合材料参数、电磁参数和机构的结构参数的系统动态方程,推导出了系统的自激惯性力,得出了自激惯性力及系统的非线性特性,通过研究发现了该系统的动态响应不仅与复合材料的细观结构参数与组分材料参数、连杆机构的结构参数和电机的电磁参数有关,而且还与电机轴的横振有关。最后通过实例仿真进行了验证。

A three-phase AC motor-elastic linkage mechanism system with links fabricated from three-dimensional braided composite materials is taken as the object of study.According to the transverse vibration and torsional vibration of motor shaft and the 3-dimentional microstructure characters of three-dimensional braided composite materials,a group of coupling dynamic nonlinear equations of the system,which include composite materials parameters,electromagnetism parameters of motor and structure parameters of elastic linkage mechanism,are established by the finite element method.The non-linear characteristics of self-excited inertial forces are analyzed.The inner relations between the dynamic responses of the system and the microstructure parameters of composite materials,electromagnetism parameters of the drive-motor,the structure parameters of the mechanism and the transverse vibration are studied.Through analysis of an example,some valuable conclusions are obtained and verified.