Buck/boost servo amplifier for direct-drive-valve actuation

Author

Lin, Jea-sen ; Chen, Chern-lin

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

31

Issue

3

fYear

1995

fDate

7/1/1995 12:00:00 AM

Firstpage

960

Lastpage

967

Abstract

We analyze the bandwidth problem of the direct-drive-valve (DDV) flight-control actuation and present two new high-performance buck/boost servo amplifiers for driving the force motor (FM) in this system. The designed function of the presented circuit is to improve the response speed of the output current of the amplifier by temporarily boosting its output voltage. A nonlinear pulsewidth modulated (PWM) scheme is also presented to linearize the closed-loop control characteristics of the amplifier. Experimental results show that the system beamwidth is enlarged from originally 150 Hz to 500 Hz

Keywords

aircraft; closed loop systems; electric actuators; military aircraft; nonlinear control systems; power supplies to apparatus; pulse width modulation; servomotors; 150 to 500 Hz; PWM; Taiwan; bandwidth problem; buck/boost servo amplifier; closed-loop control characteristics; defensive fighter; direct-drive-valve actuation; flight-control actuation; force motor; nonlinear pulsewidth modulated system; servo amplifiers; system beamwidth; Actuators; Bandwidth; Boosting; Circuits; Coils; Pulse amplifiers; Pulse width modulation; Servomechanisms; Space vector pulse width modulation; Voltage;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems, IEEE Transactions on

Publisher

ieee

ISSN

0018-9251

Type

jour

DOI

10.1109/7.395244

Filename

395244