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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 human body’s balance regulation process under passive exercise, this study provides the basis for the establishment of uniform evaluation criteria for passive balance test. In this study, high precision multi-dimensional motion platform as the center of gravity pulse excitation source, force platform as the center of gravity fluctuation detection device, Methods The response model under the pulse excitation of the force detection platform and the human composition system is identified, and the adjustment time is used to characterize the balance ability of the measured person. In the range of 2 ~ 20mm, in 2mm increments, five college students standing on the platform were respectively tested for their passive balance ability. The results show that the system response curve is typical second-order linear system in this range, and the evaluation results have similar reliability.