Title: Development of a myoelectric interface for indirect hand grip force and wrist angle measurement/analysis

Authors: Ahmad Jazlan; Shahrul Naim Sidek

Addresses: Mechatronics Engineering Department, Faculty of Engineering, International Islamic University Malaysia, P.O. Box 10, 50728 Kuala Lumpur, Malaysia ' Mechatronics Engineering Department, Faculty of Engineering, International Islamic University Malaysia, P.O. Box 10, 50728 Kuala Lumpur, Malaysia

Abstract: Limb loss is a growing problem due to the increasing number of accidents worldwide. A cybernetic prosthesis is a device which can assist individuals with hand disabilities by enabling them to have some of the hand capabilities of an able bodied individual. Extracting hand grip force and wrist angle information from forearm electromyogram (EMG) signals is useful to be used as inputs for the control of cybernetic prostheses. By establishing the relationship between forearm EMG and hand grip force/wrist angles, the prosthetic hand can be controlled in a manner that is customised to an amputee's intent. In this research work, a myoelectric interface which consists of an electronic conditioning circuit to measure EMG signals and software to record and process the EMG signals were developed. Experimental training and testing datasets from five subjects were collected to investigate the relationship between forearm EMG, hand grip force and wrist angle simultaneously.

Keywords: electromyograms; forearm EMG signals; cybernetic prosthesis; wrist extension; wrist flexion; hand grip force; wrist angles; artificial neural networks; ANNs; mean absolute error; MAE; myoelectric interface; wrist angle measurement; hand disabilities; hand amputees; prosthetic hands.

DOI: 10.1504/IJBBR.2014.059339

International Journal of Biomechatronics and Biomedical Robotics, 2014 Vol.3 No.1, pp.42 - 53

Received: 08 May 2021
Accepted: 12 May 2021

Published online: 12 Feb 2014 *

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