Title :
Digital linear state feedback control subject to electromagnetic disturbances
Author :
Gray, W. Steven ; Gonzalez, Oscar R. ; Dogan, Mustafa
Author_Institution :
Dept. of Electr. & Comput. Eng., Old Dominion Univ., Norfolk, VA, USA
Abstract :
High intensity electromagnetic radiation has been demonstrated to be a source of computer upsets in commercially available digital flight control systems. In this paper we present an analysis of one consequence of an electromagnetic disturbance: the flipping of bits in a computer word. Specifically, we analyze the closed-loop stability of a digital linear state feedback control law when the electromagnetic radiation causes the gain vector to be corrupted by bit errors in its floating-point representation. As an example, we analyze a stabilizing controller for the longitudinal dynamics of the AFTI/F-16 aircraft
Keywords :
aircraft control; closed loop systems; digital control; electromagnetic interference; linear systems; stability; state feedback; AFTI/F-16 aircraft; closed-loop stability; computer upsets; digital flight control systems; digital linear state feedback control; digital linear state feedback control law; electromagnetic disturbance; electromagnetic disturbances; electromagnetic radiation; floating-point representation; high-intensity electromagnetic radiation; longitudinal dynamics; stabilizing controller; Aerospace control; Aircraft; Computer errors; Electromagnetic analysis; Electromagnetic radiation; Error correction; Linear feedback control systems; Stability analysis; State feedback; Vectors;
Conference_Titel :
American Control Conference, 1999. Proceedings of the 1999
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-4990-3
DOI :
10.1109/ACC.1999.782417
