Design and analysis of a closed-loop controller for an anti-G suit

Author

Barazanji, Khalid W. ; Rattan, Kuldip S. ; Repperger, Daniel W.

Author_Institution

Dept. of Electr. Syst. Eng., Wright State Univ., Dayton, OH, USA

fYear

1988

fDate

23-27 May 1988

Firstpage

868

Abstract

A closed loop controller for an existing anti-G suit is proposed. The objective of this controller is to improve the G-tolerance of the pilot by filling the anti-G-suit bladders to the desired pressure in a short time period and with a small overshoot. This controller was added to the MATRIXx-based computer simulation of the cardiovascular system to evaluate its performance for different G-profiles. A comparison with the high-flow valve and the so called Bang-Bang servo valve, and the simulation results showing the effects of time delay between inflation of anti-G-suit bladders are presented. A discrete equivalent of this controller was obtained for implementation on a microprocessor

Keywords

aerospace computing; aerospace simulation; closed loop systems; control engineering computing; control system analysis; control system synthesis; digital simulation; haemodynamics; pressure control; Bang-Bang servo valve; G-tolerance; MATRIXx-based computer simulation; aircraft mishaps; anti-G-suit bladders; cardiovascular system; closed loop controller; hemodynamic; high-flow valve; loss of consciousness; microprocessor; pilot; time delay; Bladder; Cardiovascular system; Computational modeling; Computer simulation; Delay effects; Filling; Microprocessors; Pressure control; Servomechanisms; Valves;

fLanguage

English

Publisher

ieee

Conference_Titel

Aerospace and Electronics Conference, 1988. NAECON 1988., Proceedings of the IEEE 1988 National

Conference_Location

Dayton, OH

Type

conf

DOI

10.1109/NAECON.1988.195108

Filename

195108