Design And Analysis Of Passive Knee Exoskeleton

Chong, Peh Han (2018) Design And Analysis Of Passive Knee Exoskeleton. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

The objective of this project is to design and analyze a passive knee exoskeleton that is suitable for the industrial application.The scope of this project is only focused on the design of a knee exoskeleton that operates through a passive system such as spring.Spring is a passive element that able to store the wasted energy from the human body and release it when needed.Thus,the augmentation purpose of the passive knee exoskeleton achieved.The method to carry out this project started from the concept design followed the selection of the suitable concept through Weighted Rating Method.Next,the details design of the exoskeleton model and human body model were created by the SolidWorks and MakeHuman software.The dimensions of both models are based on the anthropometric measurements of Malaysian citizens.A man-machine model formed via the combination of the exoskeleton and human-body model is used for the kinematics analysis on the motion of squat lifting.A motion analysis is conducted to the passive knee exoskeleton and showed that the passive knee exoskeleton able to carry out the lifting more quickly and efficiently.The global response and local response on the spring from the exoskeleton model is studied with the linear static analysis by using SolidThinking software. The result showed that the critical component of the passive knee exoskeleton after applied load is the ball stud.Hence,parametric studies carried out on the ball stud from the aspect of material.Lastly,the design of the passive knee exoskeleton is optimised on the topology from the aspect of maximise the stiffness to weight.

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