摘要
振动和噪声是评价永磁同步电主轴运行平稳性的一个重要指标,避免电磁力与定子共振是电主轴动态设计过程中必须要考虑的因素。因此较准确地确定定子的固有频率就显得尤为重要。本文对一台功率为9.5 k W的永磁同步电主轴的模态进行了有限元计算和实验测试。通过对各部件进行等效简化,建立了有限元仿真模型。其中对绕组进行两种方式的处理:一是建立简化模型;二是将其质量进行等效处理。之后对电主轴定子结构和整机装配体电主轴单元的模态分别进行了有限元计算。最后借助丹麦B&K振动声学测试系统对电主轴进行实验模态分析,验证计算结果的准确性。
The vibration and noise are an important index appraising stability of running for a permanent mag- net synchronous motorized spindle （PMSMS）. While, it is a considerable factor that resonances between mag- netic forces and stator are avoided in dynamic design of PMSMS. Therefore, it is a vital problem to determine nature frequencies of the stator accurately. This paper presents that the modes of a 9.5 kW PMSMS are investi- gated by finite element method（FEM） and experimental method. The finite element model is constructed by e- quivalently simplified each parts. There are two simplified methods about the winding, establishing the winding simplified model, processing winding mass equivalently. The modes of stator with frame and whole assembly spindle units are calculated by using FEM, respectively. Finally, the experimental modal analysis of PMSMS is completed by Denmark B＆K test system of vibration and acoustics. The accuracy of theoretical modal frequency values was validated.
出处
《重型机械》
2016年第5期68-71,共4页
Heavy Machinery
基金
国家自然科学基金资助项目(51175350)
沈阳市科技计划项目(F15-199-1-13)
关键词
永磁同步电主轴
模态分析
有限元法
B&K测试系统
permanent magnet synchronous motorized spindle
modal analysis
finite element method
B＆Ktest system
