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논문 기본 정보

자료유형
학술대회자료
저자정보
Khalil Ullah (Myongji univ.) Ali Raza (Myongji univ.) Jung-Hoon Kim (Prof. Yonsei univ) Kagn Park (Prof. Myongji univ.)
저널정보
제어로봇시스템학회 제어로봇시스템학회 국내학술대회 논문집 2008년 제어자동화시스템심포지엄 논문집
발행연도
2008.10
수록면
582 - 585 (4page)

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초록· 키워드

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When we pick up some loads again and again, the performance capacity of our arm muscle decreases. This decrease in performance is called muscle fatigue. This fatigue can be identified by a decline in the frequency spectra of the EMG signal. In addition this muscle fatigue has an effect on EMG to torque model. The parameters of the EMG to torque model changes as fatigue of the muscle approaches. Similarly if force is applied whit different joint velocities, activation of the same number of motor units produces a different level of force. So it means that both muscle fatigue and joint velocity have effect on muscle force, which ultimately effect joint torque. In order to validate these assumptions we first analyze and monitor the muscle fatigue by analyzing EMG signal median frequency, mean frequency and power spectrum. Then we introduce our EMG to torque model and study the effect of muscle fatigue and different joint angular velocities on the model. The EMG to torque model is derived previously using non-linear regression. In order to record EMG signal from bicep muscle, joint angle and joint torque data, ten subjects took part in the experiment. They were asked to perform maximal voluntary contractions (MVC) repeatedly until fatigue of muscle is reached. They were also asked to do MVC with different joint velocities. The experimental analysis and the results of EMG to torque model show that our model successfully map EMG signal to joint torque in fatigue, non fatigue MVCs and with different joint velocities.

목차

Abstract
1. Introduction
2. Experimental Protocols and Data Pre-processing
3. EMG to Torque Model
4. Effect of Muscle Fatigue on EMG Signal and EMG to Torque Model
5. Effect of Joint Velocity on EMG Signal and EMG to Torque Model
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UCI(KEPA) : I410-ECN-0101-2014-569-000821993