Design and development of motor control using EMG-force signal

Chooi , Kah Yung (2014) Design and development of motor control using EMG-force signal. Project Report. UTeM. (Submitted)

Text DESIGN AND DEVELOPMENT OF MOTOR CONTROL USING EMG-FORCE SIGNAL 24pages.pdf Download (494kB)

Abstract

Electromyography signal also called EMG signal, it is generated in our muscle when our muscle unit is contract or expand. The high speed progression in technology has made us possible to detect the EMG signal and use it as the control signal for other applications. This report describes the development of position control of DC motor with encoder by using EMG signal from biceps brachii muscle. EMG signal is received by using sensor, sending it into microcontroller for feature extraction and classification process. Elbow joint angle is mapped with the EMG signal and the rotation angle of DC motor is synchronized with joint angle. Experiments were conducted to analyze the relationship between joint angle, torque and EMG signal. Results showed that additional torque can increase the signal to noise ration in the equipment. For the relationship between joint angle and EMG signal, it exists 2 type of shape and the mathematics model between each respondent is different. A new mapping method has been designed in this project. It map the EMG signal to joint angle by identify the closest EMG value that represent respective joint angle. Result shows that it can classify the EMG signal but calibration needs to be done to counter the fatigue factor.

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