Title :
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
fDate :
7/1/1995 12:00:00 AM
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;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
