Author： Chung S. W. Chau K. T.
Publisher： Taylor & Francis Ltd
ISSN： 1532-5016
Source： Electric Power Components and Systems, Vol.29, Iss.8, 2001-08, pp. : 707-722
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
Abstract
W ith the advantages of lightweight, compact size, fast response, power-off holding torque and high-torque low-speed characteristics, the traveling-wave ultrasonic motor (TUSM) is becoming attractive for servo application. This paper presents a new pulse width modulation (PW M) method for servo speed control of a TUSM. The key is to digitally control the pulse width, hence the fundamental value, of the bipolar 2-phase voltages feeding into the TUSM. This method takes a definite advantage of minimum audible noise compared with those available methods, such as phase-difference control, frequency control, and on-off PW M control. Experimental results confirm that the proposed speed controller can offer good steady-state and transient performances and can significantly suppress the audible noise occurred at speed variations.
Related content
Access to resources
Recommend
Mathematical Model of Ultrasonic Motors for Speed Control
Electric Power Components and Systems, Vol. 36, Iss. 6, 2008-06 ,pp. :