Title :
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
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;
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
DOI :
10.1109/APEC.1993.290612
