风电齿轮箱磨损故障建模与分析

为获得磨损故障状态下风电齿轮箱的传动特性，开展仿真实验研究。以MW级风电齿轮箱为研究对象，基于SolidWorks与ADAMS建立相应的虚拟样机，在合理设置仿真参数的基础上，进行健康和两种中间级行星轮磨损状态的动力学仿真。结果表明：通过监测风电齿轮箱高速级小齿轮的角加速度信号，可以判定中间级行星轮是否存在磨损故障；中间级行星轮磨损故障状态下，高速级小齿轮角加速度信号的故障频率幅值随着磨损程度的增大而增大，啮合频率的幅值随着磨损程度的增大而减小；高速级小齿轮角加速度信号的边带啮合频率幅值比可以作为中间级行星轮磨损故障的判别依据，通过该值可以监测磨损故障的变化趋势。

Modeling and Analysis of Wear Fault of Wind Turbine Gearbox

In order to obtain the transmission characteristics of the wind turbine gearbox under wear fault state,the simulation experiments were carried out.Based on SolidWorks and ADAMS,the virtual prototype of a MW wind turbine gearbox was built,and the dynamic simulations of health and two kinds of intermediate planetary gear wear state were carried out on the basis of reasonable setting of simulation parameters.The results show that by monitoring the angular acceleration signal of the high-speed pinion of the wind turbine gearbox,the wear fault of the intermediate planetary gear can be determined; the fault frequency amplitude of angular acceleration signal of high-speed pinion increases with the increase of wear degree,and the amplitude of meshing frequency decreases with the increase of wear degree; the sideband meshing frequency amplitude ratio of the angular acceleration signal of the high-speed pinion can be used as the criterion of the wear fault of the intermediate planetary gear,and can be used to monitor the trend of wear fault.