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For recognizing the movement intent of amputee, surface electromyogram signals which can reflect movement intent and can be measured without invasion were applied to identify movement transition. Wavelet packet transform was applied to analyze the electromyogram signal, extract its frequency feature and recognize movement. The result of this study indicates that if the suitable coefficients were selected,...
The paper proposed a locomotion simulation method of the lower limb EMG-prosthesis based on OpenGL. Firstly, the raw surface EMG and real knee angle are stored, and the features of surface EMG are extracted after preprocessed and transformed with Wavelet Packet. Secondly, the model of EMG is built with Support Vector Machine, and the knee angles of prosthesis are forecasted during the whole gait cycle...
Wavelet transformation (WT) and wavelet packet transformation (WPT) are used in this paper to eliminate the noises of surface EMG sampled from the lower limb during the subjects of study walked normally on the flat. By comparing the denoise result, WPT wins an advantage of WP with the same threshold. And the result shows that if the suitable scale and the threshold are selected, the high-frequency...
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