基于NSGA-Ⅱ算法的五连杆悬架硬点优化分析  

Optimization for Five-link Suspension Hard-points Based on NSGA-I Algorithm

作　　者：李根 代迪 LI Gen;DAI Di(Volvo Cars Technology(Shanghai)Co.,Ltd,Shanghai 201800,China)

机构地区：[1]沃尔沃汽车技术(上海)有限公司,上海201800

出　　处：《机械设计与研究》2024年第2期45-50,共6页Machine Design And Research

摘　　要：在探讨五连杆悬架的硬点结构中,利用MATLAB分析各个硬点坐标的灵敏度,从而确定其中的重要因子,将其纳入五连杆悬架的结构优化设计中,通过NSGA-Ⅱ算法进行多目标优化,使悬架具有最佳的运动学性能。对平行轮跳过程中的各个参数进行优化后,五连杆悬架的跳动转向、外倾梯度和侧倾中心高度的变化都能够达到预期的状态,从而达到最佳的性能表现。The aim of this paper is to explore the hard point structure of five-link suspension and to use MATLAB to analyze the sensitivity of each hard point coordinate so as to identify the important factors in it,which are incorporated into the structural optimization design of the five-link suspension.Multi-objective optimization is carried out through NSGA-II algorithm to give best kinematic performance of the suspension.After the optimization of each parameter in the parallel wheel hopping process,the changes of bump steer,camber gradient and lateral roll center height of the five-link suspension are able to reach the expected state,thus achieving the best performance.

关 键 词：五连杆悬架 运动学特性 硬点 灵敏度分析 NSGA-Ⅱ 

分 类 号：TH122[机械工程—机械设计及理论] TP311.1[自动化与计算机技术—计算机软件与理论]