A Computational Approach for Human-like Motion Generation in Upper Limb Exoskeletons Supporting Scapulohumeral Rhythms

by   Rana Soltani-Zarrin, et al.

This paper proposes a computational approach for generation of reference path for upper-limb exoskeletons considering the scapulohumeral rhythms of the shoulder. The proposed method can be used in upper-limb exoskeletons with 3 Degrees of Freedom (DoF) in shoulder and 1 DoF in elbow, which are capable of supporting shoulder girdle. The developed computational method is based on Central Nervous System (CNS) governing rules. Existing computational reference generation methods are based on the assumption of fixed shoulder center during motions. This assumption can be considered valid for reaching movements with limited range of motion (RoM). However, most upper limb motions such as Activities of Daily Living (ADL) include large scale inward and outward reaching motions, during which the center of shoulder joint moves significantly. The proposed method generates the reference motion based on a simple model of human arm and a transformation can be used to map the developed motion for other exoskeleton with different kinematics. Comparison of the model outputs with experimental results of healthy subjects performing ADL, show that the proposed model is able to reproduce human-like motions.


Dimensionality Reduction and Motion Clustering during Activities of Daily Living: 3, 4, and 7 Degree-of-Freedom Arm Movements

The wide variety of motions performed by the human arm during daily task...

Novel Time Domain Based Upper-Limb Prosthesis Control using Incremental Learning Approach

The upper limb of the body is a vital for various kind of activities for...

A Test Bench For Evaluating Exoskeletons For Upper Limb Rehabilitation

The potential of wearable robotics technology is undeniable. However, qu...

Data-driven Shoulder Inverse Kinematics

This paper proposes a shoulder inverse kinematics (IK) technique. Should...

Learning Humanoid Robot Motions Through Deep Neural Networks

Controlling a high degrees of freedom humanoid robot is acknowledged as ...

Anatomically Detailed Simulation of Human Torso

Existing digital human models approximate the human skeletal system usin...

Please sign up or login with your details

Forgot password? Click here to reset