具有缺陷的大功率风电斜齿轮非线性特性分析  

Nonlinear Characteristics Analysis of High-power Helical Gear with Defects for Wind Turbine Generator

作　　者：石慧荣[1] 张军平[1] SHI Hui rong;ZHANG Jun ping(The School of Mechatronic Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)

机构地区：[1]兰州交通大学机电工程学院,甘肃兰州730070

出　　处：《兰州交通大学学报》2018年第4期71-77,共7页Journal of Lanzhou Jiaotong University

基　　金：国家自然科学基金(11672121);甘肃省自然科学基金(17JR5RA100)

摘　　要：针对大功率风电增速斜齿轮系统建立了一个包含齿轮侧隙非线性、制造误差、齿轮偏心和时变啮合刚度的八自由度耦合动力学模型,根据单个斜齿轮具有一个缺陷轮齿时啮合刚度的变化规律,对缺陷轮齿刚度减小到不同程度下系统动态特性进行了研究,利用Runge-Kutta法对大小齿轮分别存在不同程度轮齿缺陷时的系统进行了求解,通过对系统传动误差的分岔图、相图、Poincaré相图及频谱的分析比较,表明缺陷轮齿将使系统非线性振动加强,而且高速小齿轮的轮齿缺陷对系统动态特性的影响更加严重.Based on the speed raising system of high-power helical gear for wind turbine generator,a coupling dynamics model with eight degrees of freedom was established,in which gear backlash nonlinearity,manufacturing error,gear eccentricity and time-varying mesh stiffness were considered.In accordance with the law governing the change of meshing stiffness of a pair of helical gear with single tooth defects,the dynamic characteristics of the gear system were studied for different stiffness reduction of the defect tooth.The method of Runge-Kutta was adopted to capture the solution of the system equations for the defect tooth on the gear and pinion respectively.The bifurcation,phase trajectories,Poincarédiagram and power spectrum of the dynamic transmission error were compared and discussed.The results show that the tooth defects strengthen the system nonlinear vibration and the tooth defect of high-speed pinion influences the system dynamic characteristics more seriously.

关 键 词：分岔 轮齿缺陷 非线性动力学 斜齿轮 混沌 

分 类 号：TH133.1[机械工程—机械制造及自动化]