A control theory approach for analyzing the effects of data errors in safety-critical control systems

Askerdal, O. and Gäfvert, M. and Hiller, M. and Suri, Neeraj (2002) A control theory approach for analyzing the effects of data errors in safety-critical control systems. In: Pacific Rim International Symposium on Dependable Computing, 2002. Proceedings. IEEE, pp. 105-114. ISBN 0769518524

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Computers are increasingly used for implementing control algorithms in safety-critical embedded applications, such as engine control, braking control and flight surface control. Addressing the consequent coupling of control performance with computer related errors, this paper develops a composite computer dependability/control theory methodology for analyzing the effects data errors have on control system dependability. The effect is measured as the resulting control error (defined as the difference between the desired value of a physical properly and its actual value). 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) present 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 effects of data errors on system dependability An automobile slip-control brake-system is used as an example showing the viability of our approach. © 2002 IEEE.

Item Type: Contribution in Book/Report/Proceedings
Departments: Faculty of Science and Technology > School of Computing & Communications
ID Code: 137643
Deposited By: ep_importer_pure
Deposited On: 08 Oct 2019 08:50
Refereed?: Yes
Published?: Published
Last Modified: 07 Jan 2020 06:16
URI: https://eprints.lancs.ac.uk/id/eprint/137643

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