华中科技大学学报（自然科学版）2025，Vol.53Issue(12)：76-84,94,10.DOI:10.13245/j.hust.251210
纯电动汽车齿轮传动系统非线性动力学特性分析
Nonlinear dynamics of gear transmission system of pure electric vehicle
摘要
Abstract
To investigate the influence mechanism of motor speed excitation frequency and system internal parameters on the dynamics and stability of the gear transmission system of pure electric vehicles,a nonlinear dynamics model of the gear transmission system of pure electric vehicles was constructed by comprehensively considering the time-varying meshing stiffness,time-varying support stiffness,tooth-side clearance,and bearing clearance,and other factors.The system dynamics differential equations were solved by the Lunger-Kutta method,and the influence mechanisms of rotational speed excitation frequency,meshing damping and time-varying meshing stiffness on the system dynamics were investigated by the three-dimensional spectrograms,bifurcation diagrams,phase diagrams,and Poncalai cross sections of the system.In addition,the multi-scale method and time-lag control parameters were combined to determine the main resonance stability conditions of the system,and the effects of time-lag control parameters and speed excitation frequency on the main resonance of the system were investigated.The accuracy of the dynamics model was also verified by experimental control through the comprehensive test bench of secondary helical gearbox.Results show that the pure electric vehicle gear transmission system has rich nonlinear characteristics,and the stability of the pure electric vehicle gear transmission system can be effectively improved by avoiding the motor speed instability interval and rationally designing the internal parameters of the system.关键词
纯电动汽车/齿轮传动系统/非线性动力学/主共振/时滞控制参数Key words
pure electric vehicle/gear transmission system/nonlinear dynamics/main resonance/time-lag control parameters分类
机械制造引用本文复制引用
MO Shuai,WANG Zhen,ZENG Yanjun,ZHANG Wei..纯电动汽车齿轮传动系统非线性动力学特性分析[J].华中科技大学学报（自然科学版）,2025,53(12):76-84,94,10.基金项目
广西杰出青年科学基金资助项目(2025GXNSFFA069016) （2025GXNSFFA069016）
广西科技重大专项资助项目(AA24263074,AA23073019) （AA24263074,AA23073019）
国家自然科学基金资助项目(52265004) （52265004）
华中科技大学智能制造装备与技术全国重点实验室开放基金资助项目(IMETKF2025021) （IMETKF2025021）
中国航空发动机集团科技创新平台资助项目(CXPT-2023-044) （CXPT-2023-044）
毛明院士工作站开放基金资助项目(XSJSFW-QNKXJ-202404-007). （XSJSFW-QNKXJ-202404-007）
