Analyzing the Impact of Data Errors in Safety-Critical Control Systems

Askerdal, Ö. and Gäfvert, M. and Hiller, M. and Suri, Neeraj (2003) Analyzing the Impact of Data Errors in Safety-Critical Control Systems. IEICE Transactions on Information and Systems, E86-D (12). pp. 2623-2633. ISSN 0916-8532

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Abstract

Computers are increasingly used for implementing control algorithms in safety-critical embedded applications, such as engine control, braking control and flight surface control. Consequently, computer errors can have severe impact on the safety of such systems. Addressing the coupling of control performance with computer related errors, this paper develops a methodology for analyzing the impacts data errors have on control system dependability. The impact of a data error is measured as the resulting control error. We use maximum bounds on this measure as the criterion for control system failure (i.e., if the control error exceeds a certain threshold, the system has failed). In this paper we a) develop suitable models of computer faults for analysis of control level effects and related analysis methods, and b) apply traditional control theory analysis methods for understanding the impacts of data errors on system dependability. An automobile slip-control brake-system is used as an example showing the viability of our approach.

Item Type:
Journal Article
Journal or Publication Title:
IEICE Transactions on Information and Systems
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2208
Subjects:
ID Code:
137635
Deposited By:
Deposited On:
08 Oct 2019 09:20
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 12:17