An EMG control system of ultrasonic motors using PSoC microcomputer

Abstract

We investigate on development of myoelectric elbow prostheses with ultrasonic motor. Ultrasonic motors have some special unique features, such as high-torque under low-speed operation, compact size, and no electromagnetic noise. On other hand, use of the threshold level or amplitude of EMG (electromyogram) is often adopted as control methods of practical myoelectric prostheses using microcomputer. However, this method is not always suitable for the proposed prostheses. In order to development of an EMG controller for the myoelectric elbow prostheses, we proposed an EMG control system using PSoC microcomputer for ultrasonic motor. In this study, we development an EMG control system for ultrasonic motors using PSoC microcomputer, and it was proved effective in fundamental experiments.