Modeling and parameter identification of distributed parameter dynamics model for a human body

被引：0
作者：
Chen, Zhe-Yao [1 ]
Wang, Hao-Qi [1 ]
Chen, Jun [1 ]
Zhao, Yong-Fang [2 ]
Guo, Hai-Ling [2 ]
机构：
[1] College of Civil Engineering, Tongji University, Shanghai
[2] Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai
来源：
Zhendong Gongcheng Xuebao/Journal of Vibration Engineering | / 37卷 / 09期
关键词：
distributed parameter model; human body dynamics model; parameter identification; spring-mass-damper model;
D O I：
10.16385/j.cnki.issn.1004-4523.2024.09.003
中图分类号：
学科分类号：
摘要：
Establishing human body dynamics model to obtain human natural vibration frequency is a common scientific challenge in various fields such as civil engineering,traffic engineering,aerospace,rehabilitation medicine and so on. The spring-mass-damper (SMD)model is most commonly used in previous studies,which actually is not consistent with the distribution characteristics of human mass and stiffness along the height. In this study,a distributed parameter dynamics model of the human body with a pair of biomechanical forces is proposed,and the analytical solution of human natural frequency is theoretically derived. Therefore,a frequency recognition method based on gait tests is proposed. 247 subjects are organized to conduct gait tests,and their stiffness and natural frequency are identified. The rationality and applicability of the proposed model are verified from multiple perspectives:by fitting the probability distribution of results,comparing the results with other researches,and analyzing the results across different age groups. © 2024 Nanjing University of Aeronautics an Astronautics. All rights reserved.
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页码：1468 / 1475
页数：7
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