摘要
以一级齿轮箱及其连接的双跨转子系统为研究对象,研究其载荷激励和断齿故障下的动力学机理。针对齿轮啮合刚度的时变性及其所连接的转子系统的不平衡,以转子系统动力学、齿轮系统动力学以及拉格朗日方程为基础,构建了齿轮-转子系统的弯扭耦合数学模型,并在Matlab/Simulink环境下建立其仿真模型。数值仿真了断齿故障信号,并通过信号发生器模拟不同的载荷激励,通过观察其时频图解析了不同载荷激励和断齿故障所引起的系统动力学响应。最后,通过不同载荷激励下的齿轮断齿故障试验,得到实测信号的时域图并进行频谱分析,验证了齿轮-转子系统模型的合理性,可为齿轮-转子系统的故障诊断提供重要的理论依据。
The dynamics mechanism of the first-order gearbox and its connected two-span rotor system under load excitation and broken tooth fault is studied.Because of the time-varying meshing stiffness of gears and the unbalance of the rotor system,the coupling mathematical model of the gear rotor system is established based on the rotor dynamics and Lagrange equation,and the simulation model is established in Matlab/Simulink.The fault signals are simulated by numerical simulation,and different load excitation is simulated by signal generator.The dynamics response of the system caused by different load excitation and fault is analyzed by observing its time-frequency diagram.Finally,the time domain diagram of the measured signal is obtained and the frequency spectrum is analyzed through the experiment of gear tooth breaking under different load excitation.Then the rationality of the gear rotor system model is verified,which can provide an important theoretical basis for the fault diagnosis of the gear rotor system.
作者
张海涵
任芳
冯晋豪
Zhang Haihan;Ren Fang;Feng Jinhao(College of Mechanical Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Key Laboratory of Fully Mechanized Coal Mining Equipment of Shanxi Province,Taiyuan 030024,China)
出处
《机械传动》
北大核心
2020年第8期57-64,共8页
Journal of Mechanical Transmission
基金
国家自然科学基金(51475318)。
关键词
齿轮-转子系统建模
断齿故障
外载荷激励
啮合刚度
频谱分析
Modeling of gear rotor system
Broken tooth fault
External load excitation
Meshing stiffness
Spectrum analysis
