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.
出处
《机械传动》
CSCD
北大核心
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)
关键词
LMS
工作模态
齿轮箱性能
最小二乘复频域法
LMS Operating modal Gearbox performance Least squares complex frequency domain method
