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On the design of robust integrators for fail-bounded control systems
Chalmers University of Technology.
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.
Chalmers University of Technology.
Chalmers University of Technology.
2003 (English)In: Dependable Systems and Networks, 2003. Proceedings, Piscataway, NJ: IEEE Communications Society, 2003, 415-424 p.Conference paper, Published paper (Refereed)
Abstract [en]

This paper describes the design and evaluation of a robust integrator for software-implemented control systems. The integrator is constructed as a generic component in the Simulink design tool, and can thus be used for robust implementation of a wide range of control algorithms. The integrator is designed to support the failbounded failure model for transient bit-flips that may occur in the CPU, main memory and I/O circuits of a control system. In particular, it allows the control system to detect and recover from bit-flips that cause data errors. Robustness is achieved by sequentially executing duplicated integrator code on the same processor to support error detection, and through the use of a recovery buffer that allows a roll-back to the previous integrator state when an error is detected. The effectiveness of the robust integrator was evaluated through fault injection experiments with a PI controller, where single bit flips were injected inside the CPU of the control system. No violations of the fail-bounded model were observed in the experiments.

Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Communications Society, 2003. 415-424 p.
National Category
Control Engineering
Research subject
Control Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-34280Scopus ID: 1542270164Local ID: 86ff8010-5f52-11db-8cbe-000ea68e967bISBN: 0-7695-1952-0 (print)OAI: oai:DiVA.org:ltu-34280DiVA: diva2:1007530
Conference
International Conference on Dependable Systems and Networks : 22/06/2003 - 25/06/2003
Note
Godkänd; 2003; 20060929 (ysko)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-10-19Bibliographically approved

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