摘要
针对行星齿轮传动系统运行特性,建立行星轮系动力学模型,深入研究其动力学响应特性。首先在Adams环境下建立行星齿轮传动系统实体模型,通过设置齿轮啮合接触系数、齿轮轴承支撑参数等实现了其正常及行星轮故障状态的仿真,得到不同部位的动力学响应。然后应用变分模态分解(VMD)-改进小波信号处理分析,提取不同转速下正常状态及行星轮故障时的故障特征。结果表明,行星故障对应的故障特征是以故障所在齿轮的故障特征频率为调制信号,对啮合频率产生了调幅调频作用,且故障对应的故障特征频率是单位时间内故障所在齿轮发生的啮合次数。因此,通过仿真可以实现许多极限条件以及耦合故障等条件下的动力学仿真分析,该研究可为行星齿轮箱故障诊断提供理论依据。
Aiming at the fault phenomenon of the planetary gear transmission system, the dynamic model of the planetary gear train is established, and the vibration response characteristics of the gear fault are deeply studied. Based on the Adams environment, the three-dimensional model of the planetary gear transmission system is established. By setting the gear meshing contact coefficient and the gear bearing support parameters, the normal state is realized. The simulation of the planetary gear fault state obtains the dynamic response of different parts. Then use variational mode decomposition(VMD)-improved wavelet signal processing analysis to extract the fault characteristics of normal state and planetary gear failure at different speeds. The results show that the fault characteristic corresponding to the local fault of the planetary gear is the modulation signal of the fault characteristic frequency of the gear, and the amplitude modulation frequency is generated for the meshing frequency, and the fault characteristic frequency corresponding to the local fault is the gear of the fault in unit time. The number of meshing, the research results can provide a theoretical basis for planetary gearbox fault diagnosis.
作者
董少君
马超
栾忠权
徐小力
Dong Shaojun;Ma Chao;Luan Zhongquan;Xu Xiaoli(Key laboratory of Modern Measurement and Control Technology,Beijing Information Science&Technology University,Beijing 100192,China)
出处
《电子测量与仪器学报》
CSCD
北大核心
2019年第12期80-85,共6页
Journal of Electronic Measurement and Instrumentation
基金
中国科学院太空应用重点实验室开放基金(LSU-KFJJ-2018-07)
教师队伍建设创新团队项目(PXM2018_014224_000042)资助。
关键词
行星齿轮
动力学仿真
故障特征
变分模态分解
planetary gear
dynamics simulation
fault characteristics
variational mode decomposition(VMD)
