行星轮系损伤动力学仿真与特征提取  

Dynamical Simulation and Feature Extraction of Cracks Damage in Planetary Gear Systems

作　　者：丁闯[1] 张兵志[1] 任国春[1] 冯辅周[1] DING Chuang;FENG Fu - zhou;REN Guo - chun;ZHANG Bing - zhi(Department of Mechanical Engineering, Academy of Armored Force Engineering, Beijing 100072, China)

机构地区：[1]装甲兵工程学院机械工程系,北京100072

出　　处：《计算机仿真》2018年第4期367-372,376,共7页Computer Simulation

基　　金：装备预言基金(9140A27020115JB35001)

摘　　要：目前行星齿轮箱已经在军用和民用装备中广泛应用,研究行星齿轮箱的故障诊断方法意义重大。为了研究行星齿轮传动的故障机理,揭示其故障特征,建立了行星齿轮系统的动力学模型,研究了齿轮裂纹对齿轮啮合刚度的影响,得出了正常、太阳轮裂纹和行星轮裂纹等三种状态下系统的振动响应。提出了基于包络排列熵的特征提取方法,以判断行星轮系的运行状态。最后通过实测信号验证了所提特征的有效性。Nowadays, planetary gearboxes have been widely used in military and civilian equipment, and research on fault diagnosis of planetary gearboxes is very meaningful. In order to study the fault mechanism of planetary trans- mission and reveal its fault feature, a dynamics model was built, and the iniluence of tooth crack on meshing stiffness of tooth was studied, by which the vibration responses of three conditions, namely normal state, sun gear with a cracked tooth and planet gear with a cracked tooth,were obtained. Then a feature extraction method based on enve- lope permutation entropy （EPE） was proposed, which can be used to identify the state of planetary gear set. Finally, by actual acquired vibration, the effectiveness of feature proposed was declared.

关 键 词：行星轮系 啮合刚度 动力学仿真 裂纹损伤 特征提取 包络排列熵 

分 类 号：TH212[机械工程—机械制造及自动化] TH213