Effects of electromagnetic interference on controller-computer upsets and system stability

Author

Kim, Hagbae ; White, Allan L. ; Shin, Kang G.

Author_Institution

Dept. of Electr. & Comput. Eng., Yonsei Univ., Seoul, South Korea

Volume

8

Issue

2

fYear

2000

fDate

3/1/2000 12:00:00 AM

Firstpage

351

Lastpage

357

Abstract

Electromagnetic interference (EMI) causes controller upsets manifested as errors in control-law computation on a controller computer, or as disturbances in data transmission between sensors/actuators and the controller computer, which may be critical to system stability. We compute the probability of these EMI-induced upsets in terms of the parameters governing EMI behaviors and the conditional probabilities of upsets in the presence of EMI, which is useful for the design and verification of the integrity of reliable controllers. The results are used to modify a system dynamic equation to examine asymptotic stability with probability one for the random sequences of the system states evolving according to the resultant dynamic equation, which are validated via a simple EMI experiment in a reverberation chamber

Keywords

asymptotic stability; computerised control; electromagnetic interference; probability; EMI-induced upsets; conditional probabilities; control-law computation; controller-computer upsets; data transmission disturbances; dynamic equation; electromagnetic interference; integrity; random sequences; reliable controllers; reverberation chamber; system stability; Actuators; Asymptotic stability; Computer errors; Control systems; Data communication; Electromagnetic interference; Equations; Error correction; Random sequences; Sensor systems;

fLanguage

English

Journal_Title

Control Systems Technology, IEEE Transactions on

Publisher

ieee

ISSN

1063-6536

Type

jour

DOI

10.1109/87.826806

Filename

826806