车辆人椅系统主要参数对舒适度敏感性分析  

Sensitivity Analysis of Ride Comfort to the Main Parameters of the Occupant-Seat System of a Vehicle

作　　者：李睿[1,2] 郭立新[2] 

机构地区：[1]东北大学机械工程与自动化学院,沈阳110004 [2]东北大学机械工程与自动化学院,沈阳110004

出　　处：《汽车工程》2015年第1期83-87,106,共6页Automotive Engineering

基　　金：国家自然科学基金(51275082);中央高校基本科研业务费(N130403009)资助

摘　　要：建立了一个二维人-椅系统动力学模型,以研究其主要参数对乘坐舒适性的影响。利用软件Matlab Sim Mechanics建立了相应的非线性仿真模型,将实验测定的路面激励数据分别输入非线性仿真模型和线性模型,比较输出的加速度功率谱密度以验证线性模型的有效性,在此基础上进行敏感性分析。结果表明,除了座椅的刚度和阻尼以外,人体身高、体质量和乘坐姿态也对舒适性有重要影响。A two-dimensional dynamics model for occupant-seat system is built for analyzing the effects of its main parameters on ride comfort with a corresponding non-linear simulation model also established by Matlab SimMechanics. The pavement excitation data obtained by experiment are input into non-linear simulation model and linear dynamic model respectively to compare their output in terms of acceleration power spectrum density for verif-ying the validity of linear model. On this basis, a sensitivity analysis is carried out. The results show that in addi-tion to the stiffness and damping of seat, the height, mass and sitting posture of human body also have an important influence on ride comfort.

关 键 词：人 椅系统 舒适度评价 非线性模型 功率谱密度 坐姿 

分 类 号：U463.836[机械工程—车辆工程]