电动机-弹性连杆机构系统谐振机理研究  

Mechanism of resonances in a motor-elastic linkage mechanism system

作　　者：李兆军[1] 蔡敢为[2] 黄其柏[1] 

机构地区：[1]华中科技大学机械科学与工程学院,湖北武汉430074 [2]广西大学机械工程学院,广西南宁530004

出　　处：《振动工程学报》2006年第1期93-97,共5页Journal of Vibration Engineering

基　　金：国家自然科学基金(50175031;50565001);广西科学基金(桂科自0542005);国家教育部科学技术重点项目(205119);广西"新世纪十百千人才工程"专项资金资助(2003203)

摘　　要：以三相交流电动机-弹性连杆机构系统为研究对象,考虑三相交流电机转子振动偏心时不均匀气隙的气隙磁场对系统的影响,用有限单元法建立了系统的耦合动态方程,并将驱动电机和机构作为一个完整的系统对其谐振机理进行了研究。研究表明:该系统的谐振现象不仅与系统转速有关,而且还与电动机的同步转速有关;该系统的低阶临界转速不仅与系统的固有频率有关,也与电动机的同步转速有关。A three-phase AC motor-elastic linkage mechanism system is taken as an object of study. Based on the air-gap field of non-uniform airspace of three-phase AC motor caused by the eccentricity of rotor, coupling dynamic nonlinear equations of the system are established by use of finite element method. Taking the drive motor and the mechanism as an integrated system, the resonant mechanism of the system is studied. Some useful conclusions are obtained. For example, the resonance of a three-phase AC motor-elastic linkage mechanism system is related not only to the speed of the system but to the synchronous rev of the drive motor; the lower order critical speed of the system is related not only to the natural frequencies of the system but to the synchronous rev of the drive motor.

关 键 词：连杆机构 机电系统 谐振机理 电磁参数 

分 类 号：TH112.5[机械工程—机械设计及理论] TH113