高速行驶方向盘摆振的鲁棒性分析及优化  

Robustness Analysis and Optimization of Steering Wheel Nibble during High-Speed Driving

作　　者：林胜 刘森海[1] 钟秤平 关永学 徐文静 尹若愚 LIN Sheng;LIU Senhai;ZHONG Chengping;GUAN Yongxue;XU Wenjing;YIN Ruoyu(Jiangling Motors Co.,Ltd.,Nanchang 330001,China;Jiangxi Vehicle Noise and Vibration Key Lab.,Nanchang 330001,China)

机构地区：[1]江铃汽车股份有限公司,江西南昌330001 [2]江西省汽车噪声与振动重点实验室,江西南昌330001

出　　处：《机械》2024年第10期37-43,共7页Machinery

基　　金：国家重点研发计划(2022YFB2503505)。

摘　　要：针对车辆高速行驶时产生的方向盘摆振问题,通过分析方向盘摆振机理和阐述鲁棒性分析原理,提出一种大样本下摆振响应分布和摆振响应量级分析相结合的方法进行研究。构建某皮卡车型底盘硬点、轮胎、悬架结构、悬架动刚度、转向系统模型,并通过实测和CAE分析悬架模态验证模型准确性,通过CAE对方向盘摆振问题的激励源、传递路径及响应进行研究,确定各部件对方向盘摆振的贡献量,找出影响方向盘摆振的关键部件。最终通过优化方向盘转动惯量以及转向器阻尼参数,有效解决车辆高速行驶时的方向盘摆振问题,提升了问题控制鲁棒性和驾乘舒适性。本研究对于方向盘摆振问题的前期设计规避和后期优化思路具有重要的参考意义。In response to the steering wheel nibble problem caused by high-speed driving of vehicles,this paper proposes a method that combines the distribution of nibble response under large sample size and the analysis of nibble response magnitude.The mechanism of steering wheel nibble is analyzed and the principle of robustness analysis is explained.A chassis hard point,tire,suspension structure,suspension dynamic stiffness,and steering system model of a certain pickup truck model is constructed.The accuracy of the model is verified through actual measurement and CAE analysis of suspension modes.The excitation source,transmission path,and response of the steering wheel nibble problem are studied,and the contribution of each component to steering wheel nibble is determined.The key components that affect steering wheel nibble are identified.Finally,by optimizing the steering wheel moment of inertia and steering gear damping parameters,the problem of steering wheel nibble during high-speed driving is effectively solved,which improves the robustness of problem control and enhances driving comfort.This study provides important reference for the early design avoidance and later optimization ideas of steering wheel nibble problems.

关 键 词：方向盘摆振 鲁棒性分析 方向盘惯量 转向器阻尼 

分 类 号：U463.4[机械工程—车辆工程]