基于方差的动力总成悬置系统固有特性灵敏度分析及稳健性研究  

Variance-Based Sensitivity Analysis and Robustness Study of Intrinsic Characteristics of Powertrain Mounting Systems

作　　者：卢汉奎 南富乾 杨林强 付建信 邓文海 Lu Hankui;Nan Fuqian;Yang Linqiang;Fu Jianxin;Deng Wenhai(Chongqing Seres Phoenix Intelligent Innovation Technology Co.,Ltd.,Chongqing 400041)

机构地区：[1]重庆赛力斯凤凰智创科技有限公司,重庆400041

出　　处：《汽车工程师》2025年第1期1-9,共9页Automotive Engineer

摘　　要：为实现动力总成悬置系统的固有特性优化及其稳健性评估,提出一种基于方差的灵敏度分析方法,找到对系统性能影响显著的关键参数,构建悬置系统的多目标优化模型,求解得到合理的确定性优化方案。同时,为了评价悬置系统固有特性在关键参数不确定性变化情况下的稳健性,引入偏度和峰度,结合平均值、标准差开展稳健性评价,并采用基于拉丁超立方采样的蒙特卡洛模拟方法,分析了悬置刚度的不确定性因素对悬置系统固有特性稳健性的影响。研究结果显示,基于方差的灵敏度分析方法不仅能够有效优化悬置系统的固有特性,提高优化效率,且通过综合考量悬置刚度的敏感性,可更准确地评估和提升系统的稳健性。In order to realize the optimization of the intrinsic characteristics of the powertrain mounting system and its robustness evaluation,this paper proposed a sensitivity analysis method based on variance to find the key parameters that have a significant impact on the system performance.A multi-objective optimization model of the mounting system is constructed,which solves to obtain a reasonable deterministic optimization scheme.Meanwhile,in order to evaluate the robustness of the intrinsic characteristics of the mounting system under the uncertainty variation of the key parameters,the skewness and kurtosis are introduced,and the robustness evaluation is conducted by combining the mean value and standard deviation,and the Monte Carlo simulation method based on Latin Hypercube Sampling is used to analyze the influence of the uncertainty factors of the mounting stiffness on the robustness of the intrinsic characteristics of the mounting system.The results show that the variance-based sensitivity analysis method can not only effectively optimize the intrinsic characteristics of the mounting system and improve the optimization efficiency,but also more accurately evaluate and enhance the robustness of the system by comprehensively considering the sensitivity of the mounting stiffness.

关 键 词：悬置系统 方差 灵敏度分析 蒙特卡洛法 稳健性分析 

分 类 号：U464.13[机械工程—车辆工程] TP319[交通运输工程—载运工具运用工程] O213.1[交通运输工程—道路与铁道工程]