Model reference adaptive speed control of ultrasonic motor based on Lyapunov theory

作者：Shi Jingzhuo^*; Zhang Huimin

来源：Transactions of China Electrotechnical Society, 2011, 26(4): 44-50.

• Adaptive control strategy
• Control objects
• Control performance
• Control strategies
• Drive voltage
• Feed-forward compensator
• Input-output
• Lyapunov
• Lyapunov stability theory
• Lyapunov theories
• Model reference adaptive
• Non-Linearity
• Novel methods
• Ultrasonic motor
• Ultrasonic motors

Ultrasonic motor is a kind of control object with obvious time-variable nonlinearity. In order to improve its speed control performance, some adaptive control strategies are adopted. In this paper, a model reference adaptive speed controller is designed for ultrasonic motor. The controller takes drive voltage';s amplitude as the control argument, and is designed using input-output variables according to Lyapunov stability theory. Novel method of on-line adaptive-rate regulation and a differential feedforward compensator are also designed to improve the performance of speed control at start time. The experiments indicate the availability of the proposed control strategy.

• 出版日期2011
• 单位河南大学