Online Reset for Signal Temporal Logic Monitoring

Online monitoring is a popular validation approach in which the temporal behavior of a system is checked to assess whether it satisfies a given specification expressed, e.g., in signal temporal logic (STL). This is done by employing a monitor that, at each time point, states the specification validi...

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Veröffentlicht in:IEEE transactions on computer-aided design of integrated circuits and systems Jg. 41; H. 11; S. 4421 - 4432
Hauptverfasser: Zhang, Zhenya, Arcaini, Paolo, Xie, Xuan
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York IEEE 01.11.2022
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Schlagworte:
Gears
Hybrid systems
monitor reset
Monitoring
online monitoring
Optimized production technology
Robustness
Runtime
Semantics
signal diagnostics
Signal monitoring
signal temporal logic (STL)
Specifications
Syntactics
Temporal logic
ISSN:0278-0070, 1937-4151
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Beschreibung
Zusammenfassung:Online monitoring is a popular validation approach in which the temporal behavior of a system is checked to assess whether it satisfies a given specification expressed, e.g., in signal temporal logic (STL). This is done by employing a monitor that, at each time point, states the specification validity: satisfied, violated, or unknown. In some settings, monitoring should continue even after a violation episode is detected, to detect possible future violation episodes. However, for a monitor just relying on STL semantics, this is not possible, as, once the specification is violated by an input signal, any continuation of the signal still violates the specification. To tackle this problem, we here propose an optimal reset technique that, at runtime, detects the end of a violation episode and shifts the evaluation of the monitor to skip such an episode. In this way, the monitoring can continue to detect possible other future violation episodes. We propose a framework that integrates the reset technique with an existing monitoring approach. Experiments on two Simulink models show that the technique can effectively reset the monitor and report all the violation episodes, with a negligible overhead on the monitoring cost.
Bibliographie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:0278-0070
1937-4151
DOI:10.1109/TCAD.2022.3197693