摘要
针对摩托车行驶时前悬架系统摆振问题,提出一种基于灵敏度分析的多目标优化方案。建立人-车系统仿真模型,以转向系质心位置侧倾角速度和横摆角速度为优化目标,对摩托车前悬架系统主要设计参数进行灵敏度分析,提取设计变量完成参数的优化匹配,并利用优化前、后的根轨迹图进行稳定性分析和比较。结果表明,优化后摩托车转向系质心位置在摆振区间内的侧倾角速度均值和横摆角速度均值分别减小了77.9%和36.3%,摩托车前悬架系统行驶稳定性得到明显提升。
A multi-objective optimization scheme based on sensitivity analysis was proposed to solve the problem of front suspension wobble of motorcycles.The human-vehicle system simulation model was established.The steering angle and yaw rate at the center of mass of the steering system were used as the optimization targets.The sensitivity analysis of the main design parameters of the motorcycle suspension system was carried out,and the optimization matching analysis of the design parameters was completed.The stability analysis and comparison were carried out by using the root locus map before and after optimization.The results show that the mean value of the roll angle and the yaw rate of the steering system of the motorcycle were reduced by 77.9%and 36.3%respectively,and the driving stability of the motorcycle front suspension system was significantly improved.
作者
冉险生
杨静
黄泽好
Ran Xiansheng;Yang Jing;Huang Zehao(School of Mechanical&Vehicle Engineering,Chongqing Jiaotong University,Chongqing 400074,China;Vehicle Engineering Institute,Chongqing University of Technology,Chongqing 400054,China)
出处
《现代制造工程》
CSCD
北大核心
2019年第11期56-61,共6页
Modern Manufacturing Engineering
基金
重庆市博士后科研项目(Xm2017116)
关键词
摩托车
摆振
灵敏度分析
多目标优化
根轨迹
motorcycle
wobble
sensitivity analysis
multi-objective optimization
root locus
作者简介
冉险生,副教授,硕士生导师,主要研究方向为车辆动力学;杨静,硕士研究生,主要研究方向为现代车辆设计方法与理论。E-mail:cqrxs@qq.com。
