摘要
行星齿轮箱有多个行星轮构成的平行传动路径可以分担输入的扭矩负载。行星轮之间的载荷分布不均会降低效率和加速疲劳。为了充分揭示行星轮载荷分布不均的故障特征,建立了行星轮不同载荷分布情况下的振动信号模型;推导出傅里叶频谱,说明行星轮载荷的不均匀分布会引起附加的信号频率成分,并可能导致系统固有频率的偏移;总结了输入扭矩和行星轮位置误差的严重程度对信号频谱结构的影响。仿真和实验结果与理论模型较好吻合。
Planetary gearboxes have parallel paths formed by planets sharing the input torque loads.Unequal load sharing among planets can lead to inefficiency and accelerated fatigue.To thoroughly reveal the fault signatures,this paper establishes a vibration signal model of the planets under different load distribution conditions.The derived Fourier spectrum illustrates the uneven distribution of the planet load can cause additional signal components and the shift of the natural frequency of the system.The spectral structure impacted by input torques and the severity of the planet position error is summarized.Numerical simulation and experimental results agree well with the proposed theoretical model.
作者
马浩群
冯志鹏
MA Hao-qun;FENG Zhi-peng(School of Mechanical Engineering,University of Science and Technology Beijing,Beijing 100083,China)
出处
《振动工程学报》
EI
CSCD
北大核心
2022年第1期196-201,共6页
Journal of Vibration Engineering
基金
国家重点研发计划(2018YFC0810500)
国家自然科学基金资助项目(51875034)。
关键词
故障诊断
行星齿轮箱
信号模型
载荷分布
频谱分析
fault diagnosis
planetary gearbox
signal model
load sharing
spectral analysis
