A high-bandwidth PWM servo amplifier for the direct-drive-valve actuation system

Author

Lin, Jea-sen ; Chen, Chern-Lin ; Lai, Chen-Yan

Author_Institution

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

fYear

1993

fDate

7-11 Mar 1993

Firstpage

328

Lastpage

332

Abstract

A high bandwidth biquadrant buck-boost servo amplifier with nonlinear PWM control for a direct-drive flight control actuation system is proposed. In the original H-bridge amplifier control loop, proper feedback compensation fails to enhance the system bandwidth due to nonlinear saturation effect. The design function of the presented circuit is to increase the amplifier´s slew rate by extending its linear operation range. Experimental results show that the system bandwidth is enlarged from 150 Hz to 500 Hz

Keywords

aerospace control; amplifiers; bridge circuits; control system synthesis; electric actuators; electric drives; machine control; nonlinear control systems; pulse width modulation; servomotors; 150 to 500 Hz; H-bridge amplifier; biquadrant buck-boost servo amplifier; design; direct-drive flight control actuation system; feedback compensation; high bandwidth; machine control; nonlinear PWM control; slew rate; Actuators; Bandwidth; Coils; Control systems; Force control; Linear feedback control systems; Pi control; Pulse width modulation; Servomechanisms; Valves;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 1993. APEC '93. Conference Proceedings 1993., Eighth Annual

Conference_Location

San Diego, CA

Print_ISBN

0-7803-0983-9

Type

conf

DOI

10.1109/APEC.1993.290612

Filename

290612