Variable Step-Length Efficiency Optimum Control of Traveling Wave Ultrasonic Motor System

Abstract:

To achieve the operational efficiency maximization of ultrasonic motor system, this paper analyzes optimum control of the ultrasonic motor system’s efficiency including driving circuit, while the speed closed-loop control performance is ensured. Based on regulating characteristics of open-loop speed control and fuzzy control, two optimum control methods for regulating the changing step-length of driving voltage amplitude, to shorten the elapsed time of efficiency optimization process and to improve the general operational efficiency of motor system and the speed closed-loop control performance, are also analyzed. The effectiveness of the methods mentioned in this paper are reflected using experiments.

• Periodical: Advanced Materials Research (Volumes 383-390)
• Pages: 6484-6489
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.383-390.6484
• Online since: November 2011
• Authors: Bo Liu, Jing Zhuo Shi, Xun Liu
• Keywords: Optimum Control, System Efficiency, Ultrasonic Motor

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