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KMID : 0372919890100010011
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Journal of Biomedical Engineering Research
1989 Volume.10 No. 1 p.11 ~ p.16
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The Characteristics of Muscle Fatigue of EMG Signal using the AR Model
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김홍래
왕문성/최윤호/변윤식/박상희
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Abstract
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This paper describes the AR model of EMG signal during maximum voluntary contraction. By comparing the AR coefficients and the reflection coefficients of the AR model with the median frequency of power spectrum, it is proved that muscle fatigue can be measured by the AR and the reflection coefficients. In the estimation procedure of AR model parameter, the autocorrelation method is superior to the covariance method, and it is determined that the optimal order is six. As the muscle becomes fatigue, the median frequency of power spectrum is declined, and the AR coefficient [a1] and the reflection coefficient [k1] are also decreased. Therefore the muscle fatigue can be measured by the AR parameter.
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KEYWORD
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