Design And Application Of Rehabilitation Exoskeleton Based On Product Systematization

Rehabilitation exoskeleton is the product of combined manufacturing by simulating human bone movement and intelligent electromechanical equipment(such as machine learning,control technology and information fusion transmission technology,etc).The main goal is to achieve the function of the recovery of nerve injury of stroke patients in the early stage,and developed countries have the leading technology for the study of exoskeletons.In recent years,due to the increasing trend of younger age of patients with diseases and the rise of sports injuries caused by accidents,the national "12th Five-Year Plan" included the development of medical auxiliary equipment in the national key development targets.Owing to the late start of research in China,the research on the application of lower limb rehabilitation exoskeleton has been missing.Aiming to solve the problem of rehabilitation of patients with lower limb hemiplegia,the paper systematically designed the rehabilitation exoskeleton to meet the needs of the hemiplegic group for a better life.Firstly,the paper carries on a systematic decomposition of rehabilitation exoskeleton,summarizes the development history and research status of exoskeleton,and compares the rehabilitation exoskeleton designed by major scientific research units design at home and abroad.The systematic design route of lower limb exoskeleton,namely "multi-element parallel design" was proposed.Subsequently,the product systematic analysis was implemented for the lower limb rehabilitation exoskeleton,enumerating the factors of pain points in the systematic process of product.Based on this,the system design model of O(Factor)-R(Relations)-O(Output)for lower limb rehabilitation exoskeleton was built.Then,the Hierarchy-Grey Correlation method was introduced to the elements in the system design model for the calculation of weight of importance of elements,obtaining the order of importance of the elements in the design.According to the importance of the design elements,the technical analysis of the problems involved in the lower limb rehabilitation exoskeleton was conducted,such as human kinematics,wearing comfort,control system,and multi-module fusion technology,creating corresponding solutions.With the method of system theory,the feasibility of multi-information fusion was analyzed to realize the preposition of the information in the later stage to achieve the product's sustainability and substitutability.Next,the map of lower limb exoskeleton was sketched.With the aid of the method of comfort evaluation,the optimal sketch plan was selected,and the design drawings of rehabilitation exoskeleton were completed based on SolidWorks,Rhino 3d modeling software and Keyshot rendering software.Finally,3D printing technology was utilized to make prototype model.To conclude,according to the research results of the paper,the deficiencies in the study design are analyzed,and the development prospect of the lower limb rehabilitation exoskeleton was provided.