被动运动下人体平衡调节过程线性特性分析  

Linear Features Analysis of Human Body Balance Regulation Under Passive Movement

作　　者：肖金壮[1] 熊鹏[1] 王洪瑞[1] 杨信才[2] 刘琨[1] 

机构地区：[1]河北大学电子信息工程学院,保定071000 [2]河北大学附属医院康复科,保定071000

出　　处：《生物医学工程学杂志》2012年第3期420-423,共4页Journal of Biomedical Engineering

基　　金：河北省科学技术研究与发展计划项目资助(07212106D);河北大学医工中心开放基金资助项目(BM201105)

摘　　要：为了寻找被动运动下人体平衡调节过程的线性区域,为被动平衡检测建立统一评价标准提供基础,本研究以高精度多维运动平台为重心脉冲激励源,以力平台为重心波动检测装置,采用系统辨识方法对力检测平台和人构成系统脉冲激励下的响应模型进行辨识,并由调节时间来表征被测者的平衡能力。在2～20mm范围内,以2mm为增量,针对站立于平台上的5名大学生分别进行被动平衡能力定量检测。结果表明,在此范围内系统响应曲线呈典型二阶线性系统特性,且评测结果具有相近的可靠性。In order to find the linear region of adjustment process about human body balance under the passive move- ment, and provide the basis for the unified evaluation criteria of passive balance test, an equipment was built with pulsed excitation source and wave detector of gravity＇s center. The pulsed excitation source was a multi-dimensional motion platform with high accuracy. The wave detector was a force platform. Human body and force platform were treated as a whole object, and the dynamic model of the object was built using the method of system identification. The balance ability was evaluated by setting time. In the pulse excitement range from 2mm to 20 mm with 2mm in- crements, balance ability of 5 students was evaluated and analyzed respectively. Results showed that response curve of human balance regulation was a typical second order linear system characteristic, and in a large enough linear re- gion, the evaluating result had good consistency.

关 键 词：被动平衡评测 脉冲激励 多维运动平台 调节时间 线性特性 

分 类 号：G804[文化科学—运动人体科学] R87[文化科学—体育学]