Design And Research Of Complex Terrain Motion Gait Testing Platform

The process of aging in China is accelerating and the average life span of the population continues to increase,which makes the number of elderly population increasing.Stroke and cardiovascular disease are frequently occurring among the elderly.These patients tend to be accompanied by hemiplegic symptoms and serious paralysis of the lower extremities.At the same time,due to the increase of urban vehicles and traffic accidents occurring frequently,these factors also increase the probability of human paralysis of the lower limbs,paralytic patients are not only suffering themselves,but also burdens families and society.The exoskeleton assisted robots can make elderly or paralyzed patients stand up again and restore confidence in their lives.This paper studies and designs a motion gait test platform that can be used to simulate complex terrain such as flat ground,slippery roads,obstacles,gullies,slopes and steps.According to human gait experiments,mechanical analysis and related design standards,determining the basic size of the platform structure.Then using Creo software to establish three-dimensional model diagrams and assembly drawings of the components of the test platform,and combining the model diagram to introduce the function of each component in the test process.Finally,using the ANSYS finite element analysis software to check the static strength of the experimental platform under three working conditions,obtaining the stress and strain map of the platform,then analyzing the results.Through the study of this paper,a testing platform for complex terrain motion gait is designed,which can simulate complex terrain such as flat ground,wet skid,obstacle,gully,slope and step,as well as the different friction coefficient of road.The platform is equipped with a high-speed image acquisition system,a three-dimensional motion capture system and a plantar pressure test system to record the movement process of the human body in complex terrain and obtain the moving images,gait parameters,stress conditions and adjustment methods of the human body in different walking states.To provide theoretical basis for the bionic design of lower limb exoskeleton robot,to provide for evaluation of lower limb exoskeleton robot motion performance test conditions.