液压系统参数对液压互联悬架动态响应的全局灵敏度分析

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (23) : 72-76.

论文

周兵，耿元，黄晓婷

作者信息 +

Global Sensitivity Analysis of Hydraulic System Parameters to Hydraulically Interconnected Suspension Dynamic Response

ZHOU Bing, GENGY Yuan, HUANG Xiao-ting

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文章历史 +

摘要

本文针对半车液压互联悬架防侧倾模型进行频域分析，建立了四自由度机械和液压耦合系统的动力学方程，根据系统的频响函数和路面输入分别得到垂直模态和侧倾模态下的加速度功率谱密度响应。采用Sobol全局灵敏度分析方法计算了液压参数对垂直响应和侧倾响应的灵敏度，并对计算结果进行分析。分析结果表明：与液压缸上下腔连接的阻尼阀的压力泄漏系数对垂直模态响应影响较大；蓄能器参数及与蓄能器连接的阻尼阀的压力泄露系数对侧倾模态响应影响较大。本文的研究可用于对汽车液压互联悬架系统进行平顺性评估以及后续的参数优化。

Abstract

A four-degree-of-freedom anti-roll half-car model is used to derive the mechanical and hydraulic coupled system dynamic equations in frequency domain in this paper. The frequency response functions and a road surface model are set up to achieve response such as bounce acceleration power spectrum density and roll acceleration power spectrum density. By applying a method of global sensitivity analysis called Sobol , the level of sensitivity of hydraulic parameter to bounce response and roll response are carried out. The obtained results indicate that valves connected to hydraulic chambers have a large impact on bounce vibration model and accumulator and the valves connected to it make a large impact on roll vibration model .This paper provides theoretical basis for car ride estimate and further parameter optimization of the hydraulically interconnected suspension.

导出引用

周兵，耿元，黄晓婷. 液压系统参数对液压互联悬架动态响应的全局灵敏度分析[J]. 振动与冲击, 2015, 34(23): 72-76

ZHOU Bing, GENGY Yuan, HUANG Xiao-ting. Global Sensitivity Analysis of Hydraulic System Parameters to Hydraulically Interconnected Suspension Dynamic Response[J]. Journal of Vibration and Shock, 2015, 34(23): 72-76

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