基于“源-通道-接收体”模型的汽车异常振动故障诊断  

Abnormal Vibration Fault Diagnosis of Cars Based on “Source-path-receiver” Model

作　　者：贝绍轶[1] 赵景波[1] 雷卫宁[1] 汪伟[1] 邓书朝 

机构地区：[1]江苏理工学院汽车与交通工程学院,常州213001 [2]奇瑞汽车股份有限公司,芜湖241006

出　　处：《中国机械工程》2018年第4期384-389,共6页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(61503163);江苏省自然科学基金资助项目(BK2012586);江苏省高校自然科学基金资助重大项目(17KJA580003);江苏省"六大人才高峰"资助项目(ZBZZ-023);常州市科技计划资助项目(CE20150084)

摘　　要：基于"源-通道-接收体"模型对样车特定车速下的异常振动问题进行试验研究。整车道路行驶振动测试后,确定轮胎总成为异常振动的激励源,车身/车轮总成偏频试验和车架/车身模态试验可确定异常振动的放大路径。在确定异常振动原因的基础上,分别从振动源的消除和传递路径的改善两个方面提出合理的改进措施,为工程上类似问题提供了实际案例与系统解决的方法。Based on the"source-path-receiver"model,abnormal vibrations under specific speeds of the vehicles were studied by tests.Then,the excitation source was determined from the wheel assemblies by vehicle vibration tests,body/wheel assembly partial frequency tests and frame/body modal tests were carried out to determine the abnormal vibration amplification paths.On the basis of identification the abnormal vibration causes,this paper respectively proposed reasonable improvement measures from two aspects of vibration source elimination and transfer path improvement,and provided practical cases and system solution for similar problems in engineering.

关 键 词：异常振动 振源识别 传递路径 故障诊断 

分 类 号：U472.9[机械工程—车辆工程]