摘要
人体足踝关节复杂,其运动主要包含背伸、跖屈、内收、外展、内翻以及外翻等,建立足踝关节复合运动模型利于对人体足踝运动的正确理解和应用。结合距上关节、距下关节活动方式以及距骨形态特征,假设随距骨运动的距下关节斜行纵轴运动轨迹为球面等角螺旋线;采用球型连接和铰链连接结合,并通过构件形态设计约束足踝运动角度的方式,构建了一种新型简易的足踝关节复合运动模型;讨论了模型参数范围以及该模型模拟足踝运动特征的可行性,调整和设置模型的各项具体参数,通过动作捕捉测量足表面上点的实际运动数据,对比分析了运动仿真与测量数据的差异。结果显示足踝复合关节的运动模型与实际测量数据吻合,说明能够通过该模型描述足踝关节的综合运动。
The foot and ankle are made up of many joints and the movement is composed of plantar flexion,dorsiflexion,adduction,abduction,inversion,eversion and so on.A model for describing the complex movement of foot and ankle joint is crucial to correctly understand the regular motion of the foot.This study constructed a kinematics model based on the movement mode of the supratalar and subtalar joints and the morphological characteristics of talus.Assuming that the trajectories of the subtalar joint axis conducted are spherical logarithmic helixes,a ball-and-socket combining with a hinge joint was adopted to simulate the motion and the foot movement is restricted by the morphological components design of the model.According to the related data in the references,the range of the parameters and the characteristic of the foot movement simulated by the model was discussed.A series parameters of the model were set and the angles output of foot were obtained.The motion capture of foot was carried out to collect the dynamic data of the foot.The comparison between the complex kinematics simulation and the detected data showed that the motion of the foot and ankle joint could be conveniently described by the present model.
作者
张春强
吉晓民
薛艳敏
王旭鹏
胡钢
ZHANG Chunqiang;JI Xiaomin;XUE Yanmin;WANG Xupeng;HU Gang(Xi′an University of Technology,Xi′an 710054,China)
出处
《机械科学与技术》
CSCD
北大核心
2021年第4期542-547,共6页
Mechanical Science and Technology for Aerospace Engineering
关键词
足踝关节
球面等角螺旋线
关节模型
运动仿真
动作捕捉
foot and ankle joint
spherical logarithmic helix
joint model
kinematics simulation
motion capture
