Abstract:

In this study, speed control of traveling wave ultrasonic motor has been implemented With microcontroller and has been visualized on the computer screen. Digitally controlled drive system has been developed to control the motor. Speed/position data have been taken from 500 rpm incremental encoder mounted on motor shaft. Comparators circuits having high frequency operating capability have been designed to measure frequency, voltage and phase difference. PIC 16F877 microcontroller has been used to provide connection and transmission between computer and ultrasonic motor drive system. Also it is used to evaluation of processed data. An interface software developed by using Visual Basic 6.0 to provide visual control and monitoring features. Load and varying operating condition responses of the motor have been examined experimentally. Also actual measured values and values estimated from the system have been compared. Elastic control has been provided with computer aided automation in the study. As an advantage the study can be used for educational purpose by this feature. It is revealed that the microcontroller controlled and computer based monitoring system give effective solution to the travelling-wave ultrasonic motor.

Keywords: