리니어 압전 초음파 모터를 위한 성능분석과 정밀 제어기 설계

Design of precise controller & penorm ance analysis for Linear piezo ultrasonic motor

The ultrasonic piezo motor is a new type motor that has an excellent perform ance and m any useful features th at electrom agnetic m otors do not have. B ut, it suffers from severe system non-linearities and param eter variations especially during speed control. Therefore, it is difficult to accom plish satisfactory control perform ance by using the conventional P ID controller. In this paper, to achieve the precise control for linear type ultrasonic m otor analyzed response tim e & change w ith a driving tim e. A lso, we propose controller th at com bine ST E P controller and PD controller that have error of /mi about liner type ultrasonic motor.