Modified VRFT and its application to ultrasonic motors

Author

Wakasa, Yuji ; Takayama, Futa ; Tanaka, Kanya

Author_Institution

Grad. Sch. of Sci. & Eng., Yamaguchi Univ., Ube, Japan

fYear

2012

fDate

20-23 Aug. 2012

Firstpage

182

Lastpage

186

Abstract

In this study, we propose a virtual reference feedback tuning (VRFT) method that can take into account a dead-zone. To this end, we first modify the performance index to be minimized in VRFT by focusing on the control error. We then present optimality conditions and their related filters in the modified VRFT method. Next we propose a VRFT method under dead-zone compensation by combining the modified VRFT method and the dead-zone compensation technique proposed in the previous work. The proposed VRFT method is then applied to an experimental ultrasonic motor control system, and its effectiveness is verified.

Keywords

closed loop systems; compensation; feedback; machine control; optimal control; performance index; tuning; ultrasonic motors; closed-loop system configuration; control error; dead-zone compensation technique; modified VRFT method; optimality condition; performance index; ultrasonic motor control system; virtual reference feedback tuning; Acoustics; Control systems; Educational institutions; Performance analysis; Standards; Transfer functions; Tuning; Controller parameter tuning; PID control; dead-zone; ultrasonic motor;

fLanguage

English

Publisher

ieee

Conference_Titel

SICE Annual Conference (SICE), 2012 Proceedings of

Conference_Location

Akita

ISSN

pending

Print_ISBN

978-1-4673-2259-1

Type

conf

Filename

6318430