EMG measured the skin surface is widely used as an information source to determine various types of body movements. And there are many research results that use forearm EMG to detect hand motions. In this field, detected results are used in order to control some equipments like as an artificial hand. However most of them only can detect hand motions and cannot detect muscle power for each motion. In our EMG system, we suppose that muscle power is proportional to the amplitude of EMU The power is estimated and the speed of a slot car is able to be controlled using estimated muscle power in our system. Many subjects were studied with our developed system, and most of them could control the speed of a slot car well. In future, we would like to develop an EMG controlled robot hand that can feed back the grip power of a hand.
