Stochastic perturbation models of electromagnetic disturbances in closed-loop computer controlled flight systems

W. Steven Gray*, Oscar R. Gonzalez, Mustafa Dogan

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

7 Citations (Scopus)

Abstract

High intensity electromagnetic radiation has been demonstrated to be a source of computer upsets in commercially available digital flight control systems. Thus, there is a strong need to investigate its effect on stability and performance. In [3]-[6], electromagnetic disturbances were modeled with a continuous-time Markovian exosystem generating disturbance events. To analyze the effect of these disturbances, the radiated system was modeled as a discrete-time jump linear system with an appropriate set of transition probability rates. The linear systems in this model were all deterministic, hence this method rendered a worst-case stability analysis. In this paper, the technique is generalized by allowing stochastic perturbations to be randomly introduced by the exosystem model. A preliminary stability theory is developed, and an example is presented to compare stability boundaries for radiation parameters using this model against the worst-case scenario.

Original languageEnglish
Pages10.C.4-1 - 10.C.4-8
Publication statusPublished - 1999
Externally publishedYes
Event18th DASC - Digital Avionics Systems Conference - St. Louis, MO, USA
Duration: 24 Oct 199929 Oct 1999

Conference

Conference18th DASC - Digital Avionics Systems Conference
CitySt. Louis, MO, USA
Period24/10/9929/10/99

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