抄録
If we can evaluated quantitatively by using the bioelectricity such as EMG signal, becomes possible to measure physical motion and to use control signal for power assist system. There is no way of evaluating it which can be used for the assist system simply in EMG because frequency and a phase have an influence complicatedly.EMG signal by the load was acquired targeting biceps muscle of arm, and examined about the correlation with the load and the EMG signal. This paper gives the characteristic of brachial drive for EMG signal for the purpose of developing how to control an assist system.