NW风电传动系统非线性动力学  

Nonlinear dynamics of NW wind power transmission system

作　　者：莫帅 刘翊恒 黄轩 张伟[1] MO Shuai;LIU Yiheng;HUANG Xuan;ZHANG Wei(State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures,Guangxi University,Nanning 530004,China;School of Mechanical Engineering,Guangxi University,Nanning 530004,China;State Key Laboratory of Intelligent Manufacturing Equipment and Technology,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]广西大学省部共建特色金属材料与组合结构全寿命安全国家重点实验室,广西南宁530004 [2]广西大学机械工程学院,广西南宁530004 [3]华中科技大学智能制造装备与技术全国重点实验室,湖北武汉430074

出　　处：《振动工程学报》2025年第4期722-730,共9页Journal of Vibration Engineering

基　　金：广西杰出青年科学基金资助项目(2025GXNSFFA069016);广西科技重大专项(桂科AA24263074,桂科AA23073019);国家自然科学基金资助项目(52265004);中国航发科技创新平台项目(CXPT-2023-044);智能制造装备与技术全国重点实验室开放课题(IMETKF2025021)。

摘　　要：为了更加精确地求解NW(内外啮合行星轮系)风电传动系统的非线性动力学特性,考虑了随机风速、时变支撑刚度、齿圈柔性、时变啮合刚度、传动误差、齿侧间隙、轴承游隙等因素,建立了NW行星齿轮⁃轴承系统的非线性动力学模型。利用时域图、频谱、相轨迹图、庞加莱截面图来描述系统的非线性特性,并用分岔图以及最大李雅普诺夫指数图描述激励频率与啮合刚度对系统非线性行为的影响。结果表明:NW行星齿轮⁃轴承系统具有丰富的非线性特征,激励频率在一定的范围内会导致系统进入混沌运动状态,发生失稳;啮合刚度在一定范围内可以保证系统平稳运行。In order to accurately study the nonlinear dynamic characteristics of NW(internal and external meshing planetary gear train)wind power transmission system,this paper considers factors such as random wind speed,time-varying support stiffness,ring gear flexibility,time-varying meshing stiffness,transmission error,tooth flank clearance,and bearing clearance.A nonlinear dynamic model of the NW planetary gear-bearing system is established.Time history,FFT spectrum,Phase diagram,and Poincarémaps are used to describe the nonlinear characteristics of the system,and bifurcation diagrams and the maximum Lyapunov exponent are used to describe the influence of excitation frequency and meshing stiffness on the nonlinear behavior of the system in more detail.The results show that the NW planetary gear-bearing system has rich nonlinear characteristics.In a specific range of excitation frequencies,the system can enter a chaotic motion state,leading to instability.However,within a certain range of meshing stiffness,the system can operate stably.

关 键 词：非线性动力学 NW行星齿轮 随机风速 时变支撑刚度 齿圈柔性 

分 类 号：O322[理学—一般力学与力学基础] TH132.425[理学—力学]