Load-adaptive frequency tracking control implementation of two-phase resonant inverter for ultrasonic motor

Author

Furuya, Shin-ichi ; Maruhashi, Toru ; Izuno, Yuji ; Nakaoka, Mutsuo

Author_Institution

Dept. of Electr. Eng. & Electron., Osaka Sangyo Univ., Daito, Japan

Volume

7

Issue

3

fYear

1992

fDate

7/1/1992 12:00:00 AM

Firstpage

542

Lastpage

550

Abstract

The operating principles of newly developed ultrasonic motors (USMs) that are attractive as compact and high-torque actuators are described. A two-phase high-frequency resonant inverter for driving the USM is presented. The unique operating characteristics of the USM are examined using the inverter. Two principles of resonant frequency tracking control strategy, one concerned with a sensor interface scheme mounted on the USM and a second sensorless interface scheme based on electromechanical conversion theory, are described. These control methods are realized by analog-oriented signal processing and the PLL technique. The revolving speed control obtained by this inverter-fed USM system with two types of resonant frequency tracking control methods is illustrated and discussed using an experimental breadboard

Keywords

adaptive control; invertors; machine control; piezoelectric motors; 2-phase resonant invertor; analog-oriented signal processing; electromechanical conversion theory; load-adaptive control; operating characteristics; resonant frequency tracking control; sensor interface; sensorless interface; ultrasonic motor; Actuators; Control systems; Electromechanical sensors; Phase locked loops; Resonant frequency; Resonant inverters; Sensor phenomena and characterization; Sensorless control; Signal processing; Velocity control;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.145142

Filename

145142