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基于人-车-路耦合振动系统的儿童乘坐舒适性

DOI: 10.3969/j.issn.1674-0696.2013.02.39, PP. 351-359

Keywords: 人-车-路耦合,12自由度,MATLAB/simulink,功率谱分析,乘坐舒适性,human-vehicle-roadcoupling,12-DOF,Matlab/simulink,powerspectrumanalysis,ridingcomfort

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Abstract:

:?根据拉格朗日原理,建立了基于人-车-路耦合振动的12自由度动力学数学模型;借助MATLAB/Simulink平台,分析车速、路面不平度、汽车前后轮迟滞性及左右轮相干性的特点;构建了随机路面激励时域模型;采用时域和车对儿童头部、臀部振动影响。研究表明:通过提高路面等级及车速可以提高儿童的乘坐舒适性;儿童对5~10Hz的低频及15,23Hz的中频振动最为敏感;适当地降低座椅刚度、提高阻尼及合理地布置座椅位置可以提高儿童的乘坐舒适性。

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