面向烟草机械模态实验方法研究  

Oriented to the study of experimental methods for tobacco mechanical modality

作　　者：盛亚栋 吴松 肖祖煌 吴智恒 SHENG Yadong;WU Song;XIAO Zuhuang;WU Zhiheng(Jiangxi Tobacco Industry Co.,Ltd.,Ganzhou Cigarette Factory,Ganzhou 341000,Jiangxi,China;Institute of Intelligent Manufacturing,Guangdong Academy of Sciences,Guangzhou 510070,Guangdong,China)

机构地区：[1]江西中烟工业有限责任公司赣州卷烟厂,江西赣州341000 [2]广东省科学院智能制造研究所,广东广州510070

出　　处：《农业装备与车辆工程》2024年第10期14-19,共6页Agricultural Equipment & Vehicle Engineering

基　　金：广东省科技厅广东省重大专项项目(2019B090917040)。

摘　　要：针对烟草机械成品入库机械手关节处谐波减速器使用寿命短这一现象,基于Ansys软件对谐波减速器易损件柔轮进行计算模态分析,同时,利用脉冲锤击法作为柔轮激励方式,通过LMS Test.Lab数据采集系统采集并进行模态参数识别,开展谐波减速器柔轮模态实验研究。通过仿真发现,柔轮的变形主要表现为柔轮筒身的径向拉伸与筒低的轴向偏转,柔轮低阶振型与余弦波发生器作用下柔轮变形相似,故柔轮动态性能良好;柔轮实验模态振型与仿真模态振型能相互对应,计算结果与实验测试结果相对误差最大值为10.35%、最小值仅为0.85%,相互验证了仿真模型与实验方法的准确性,提出利用模态置信矩阵评估实验可靠性,发现模态完全解耦,实验可信,同时根据实验得出最大模态贡献度分别为第7阶、第8阶、第10阶,以此为参考依据,避免共振产生,为谐波减速器振动特性分析提供参考和依据。In view of the short service life of the harmonic reducer at the joint of the manipulator in the storage of finished tobacco machinery,the computational modal analysis of the flexible wheel of the wearing parts of the harmonic reducer was carried out based on Ansys software,and at the same time,the pulse hammering method was used as the excitation method of the flexible wheel,and the modal parameters were collected and identified by the LMS Test.Lab data acquisition system,and the experimental research on the flexible wheel of the harmonic reducer was carried out.Through simulation,it was found that the deformation of the flexible wheel was mainly manifested by the radial stretch of the flexible wheel barrel and the axial deflection of the low barrel,and the low-order mode shape of the flexible wheel was similar to the deformation of the flexible wheel under the action of the cosine wave generator,so the dynamic performance of the flexible wheel was good.The relative error between the calculated results and the experimental test results was 10.35%and the minimum was only 0.85%,which verifies the accuracy of the simulation model and the experimental method,and the modal confidence matrix was used to evaluate the reliability of the experiment,and it was found that the mode was completely decoupled and the experiment was credible,and the maximum modal contribution was the 7th,8th,and 10th order respectively,which was used as a reference to avoid resonance.It provides reference and basis for the analysis of vibration characteristics of harmonic reducer.

关 键 词：谐波减速器 柔轮 烟草 模态实验 

分 类 号：TS43[农业科学—烟草工业]