基于LMS工作模态测试的齿轮箱性能分析  

Analysis of Gearbox Performance based on LMS Operating Modal Test

作　　者：楼江雷[1,2] 唐进元[1,2] 陈思雨[1,2] 唐健杰[1,2] 吴丽娟[1,2] 

机构地区：[1]高性能复杂制造国家重点实验室(中南大学),湖南长沙410083 [2]中南大学机电工程学院,湖南长沙410083

出　　处：《机械传动》2012年第3期4-6,20,共4页Journal of Mechanical Transmission

基　　金：国家自然科学基金(50875263)

摘　　要：基于LMS测试分析系统,对某试验齿轮箱进行工作模态测试和分析;采用最小二乘复频域法对齿轮箱各阶模态进行参数识别,并对工作模态分析过程中额外输入峰进行了辨识,剔除了谐波引起的虚假模态;通过对测试结果进行分析及讨论,发现齿轮安装偏心导致齿轮啮合频率及其谐波的分布;根据各阶模态振型的特性,对齿轮箱运行状况进行评价,提出对该齿轮箱结构设计的改进措施。The operating modal of a gearbox is investigated experimentally based on the LMS system. With the least square complex frequency （ISCF） method, the parametric identification of each gearbox modal is deduced. Sub- sequently, the additional input peaks are identified with the analyses of operating modal, and the fake modals caused by harmonic are removed. Through the analysis and discussion of experimental results, assembly eccentricity lead to the spread of gear meshing frequency and harmonic. Finally, according to the characteristics of each modal shape, the running states of gearbox are evaluated, and improved method for the design of gearbox structures is proposed.

关 键 词：LMS 工作模态 齿轮箱性能 最小二乘复频域法 

分 类 号：TH132.41[机械工程—机械制造及自动化]