基于响应面法的悬架优化与操纵稳定性分析  

Suspension Optimization and Handling Stability Analysis based on Response Surface Method

作　　者：苏伟伟 晋民杰 范英 SU Weiwei;JIN Minjie;FAN Ying(School of Traffic and Logistics,Taiyuan University of Science and Technology,Taiyuan 030024,China)

机构地区：[1]太原科技大学交通与物流学院,山西太原030024

出　　处：《大连交通大学学报》2022年第4期55-59,共5页Journal of Dalian Jiaotong University

基　　金：山西省重点研发计划资助项目(201903D121176)。

摘　　要：为了减小定位参数在轮跳过程中的变化量,以提高车辆的操纵稳定性,引入响应面法对悬架结构参数进行优化.在Insight模块对悬架结构参数进行灵敏度分析筛选设计变量,在MATLAB中构建2阶响应面近似数学模型.应用NSGA-Ⅱ算法对响应面模型进行寻优计算,确定优化后响应设计变量,通过轮跳试验对比优化前后悬架性能变化.针对整车模型进行操纵稳定性分析,通过实车试验进行验证.结果表明:车轮定位参数随车轮跳动变化量有不同程度的降低,优化后蛇形仿真试验综合评价分提升了4.1%,试验车辆的操纵稳定性能也得到提升.In order to reduce the change of positioning parameters during the wheel jump and improve the steering stability of the vehicle,the response surface method was used to optimize the suspension structure parameters.Sensitivity analysis of the suspension structure parameters in Insight module is conducted to select design variables,and a 2-order response surface approximate mathematical model is constructed in MATLAB.The NSGA-Ⅱalgorithm was used to optimize the response surface model and determine the response design variables after optimization.The wheel jump test was used to compare and optimize the performance changes of the front and rear suspension.The handling stability of the whole vehicle model is analyzed and verified by actual vehicle test.The results show that the wheel alignment parameters are reduced to varying degrees with the variation of wheel beating.After optimization,the comprehensive evaluation score of the snake simulation test is increased by 4.1%,and the handling stability of the test vehicle is also improved.

关 键 词：汽车悬架 响应面法 NSGA-Ⅱ 实车试验 操纵稳定性 

分 类 号：U463.33[机械工程—车辆工程]