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| Dynamic modeling and vibration characteristics of multi-DOF upper part system of seated human body |
| ZHANG E,XU Lin-an,LIU Zhong-hua,LI Xiao-ling |
| School of Mechanical Engineering,Xi'an Jiaotong University,Xi'an 710049,China |
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Abstract Aiming at the requirements of automobile human-machine interface in dynamic environment， according to multi-body dynamics， a vertical vibration model with 4-DOF for the upper part system of a seated human body was established. And then the theoretic expressions of STH， DMP， AM of the displacement， velocity， acceleration responses was derived. According to available experimental data of human body vibration， by adopting system identifying method， dynamic parameter identification of this vibration model was carried out and then human vibration property was calculated with the identified parameters. Validating research indicates that the property data of human vibration accords well with the measured data. By taking automobile human-machine interface as an example， the vibrating property of human and seat in human-automobile system was studied through this model. The obtained result can be regarded as guidance for reasonably selecting parameters of seats and improving amenity and rationality of the man-machine interface.
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Published: 28 August 2008
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自由度坐姿人体上体系统动力学建模与振动特性研究
针对动态环境汽车人机界面设计分析的需要,依据多体动力学原理建立了坐姿人体上体系统4自由度的垂直振动模型,并推导了描述人体位移、速度和加速度三种响应的STH,DPM,AM理论表达式. 依据已有的人体振动试验数据,运用系统辨识方法,进行振动模型的动力学参数识别,并将所识别出的参数进行人体振动特性计算. 验证研究表明,所计算出的人体振动特性数据与人体振动特性测试数据有较高的吻合度. 以汽车人机界面设计为实例,通过模型研究了人-车(人-椅)系统人体和座椅的振动特征. 所得结果对合理选取汽车座椅参数,提高汽车人机界面设计的宜人性和合理性有一定的指导意义．
关键词：
多自由度,
人体模型,
多体动力学,
参数识别,
振动特性
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