Title :
Improved setpoint adjustment for ultrasonic motors
Author :
Schulte, Thomas ; Fröhleke, Norbert
Author_Institution :
Inst. of Power Electron. & Electr. Drives, Paderborn Univ., Germany
Abstract :
Speed control strategies for piezoelectric drives have been presented by several authors. Beside various control strategies based on adaptive structures like MIAS, MRAS, neural nets or fuzzy control, a completely model based control system using an inner bending wave control and an outer speed control including a torque calculator for linearization has been presented. The paper deals with investigations and improvements of this torque calculator. The setpoint adjustment is focused to utilize the degrees of freedom for the bending wave values, which represents an additional potential for optimization of the performance of the drive system. Theoretical and experimental results confirm the advances
Keywords :
cascade control; machine control; motion control; piezoelectric transducers; ultrasonic motors; velocity control; completely model based control system; inner bending wave control; linearization; outer speed control; setpoint adjustment; speed control strategies; torque calculator; ultrasonic motors; Actuators; Control systems; Electric variables control; Fuzzy control; Neural networks; Rotors; Stators; Torque control; Velocity control; Voltage control;
Conference_Titel :
Advanced Intelligent Mechatronics, 2001. Proceedings. 2001 IEEE/ASME International Conference on
Conference_Location :
Como
Print_ISBN :
0-7803-6736-7
DOI :
10.1109/AIM.2001.936514
