대한의용생체공학회:의공학회지 (Journal of Biomedical Engineering Research)
- 제6권1호
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- Pages.19-30
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- 1985
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- 1229-0807(pISSN)
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- 2288-9396(eISSN)
전력 스펙트럼 밀도를 이용한 근전도 신호의 주파수 해석
Frequency Analysis of EMG Signals using Power Spectral Density
초록
This paper describes the EMG signals in frequency domain using power spectral density, The changes in the moan frequency can represent the energy distribution which results from changing in load before and during fatigue. Most of EMG signal power spectrum is located between 10 and 200Hz. Shifts of the high-energy regions of the power spectra can be inferred from the changes in the mean frequency. If the load is increased without fatigue-ocurring, the high frequency regions have more energy than the low frequency regions. And if load is increased during fatigue, the low frequency regions have more energy than the high frequency regions.
키워드