Title :
Analysis of memory bit errors induced by electromagnetic interference in closed-loop digital flight control systems
Author :
González, Oscar R. ; Gray, W. Steven ; Patilkulkarni, Sudarshan
Author_Institution :
Old Dominion Univ., Norfolk, VA, USA
Abstract :
This paper employs mean square stability conditions for worst case and random memory bit-errors caused by high intensity electromagnetic (EM) disturbances to determine EM susceptibility of flight control systems. The perturbed closed-loop system is represented as a jump linear discrete-time system. This model is compared to other types of linear parameter varying representations. Two tests for EM susceptibility are presented and applied to a simple flight controller example. The second test, which uses the random bit-error interference model, is shown to be less conservative
Keywords :
Markov processes; Monte Carlo methods; aerospace simulation; aircraft computers; aircraft control; closed loop systems; control system analysis computing; discrete time systems; electromagnetic interference; errors; fault tolerant computing; linear systems; stability criteria; state feedback; EM susceptibility; Markov chain; Monte Carlo simulation; closed-loop digital flight control systems; computer upsets; electromagnetic interference; fault tolerance; high intensity electromagnetic disturbances; jump linear discrete-time system; linear parameter varying representations; mean square stability conditions; memory bit errors; perturbed closed-loop system; process model; random errors; random interference model; state-variable feedback controller gain; worst case errors; Aerospace control; Computer errors; Electromagnetic analysis; Electromagnetic interference; Error correction; Fault detection; Fault tolerant systems; Linear systems; Stability; Testing;
Conference_Titel :
Digital Avionics Systems Conference, 2000. Proceedings. DASC. The 19th
Conference_Location :
Philadelphia, PA
Print_ISBN :
0-7803-6395-7
DOI :
10.1109/DASC.2000.886931
