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arXiv · 2409.19309

Temporal Consistency of Data and Information in Cyber-Physical Systems

Hermann Kopetz·Wilfried Steiner
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Abstract

In a large cyber-physical system, a temporal inconsistency of an output value can arise if there is a non-negligible delay between the instant when a sensor value is acquired from the environment and the instant when a setpoint, based on this sensor value, is used in the environment. Such a temporal inconsistency can be the cause of a critical malfunction of the cyber-physical system. This paper presents a solution of this temporal consistency problem that can best be implemented in a time-triggered architecture (TTA). In a TTA, the instants of sensor value acquisition, setpoint calculation, and actuation on the environment are statically configured, and the cyber-physical system implements software and hardware mechanisms to execute the respective actions tightly at these configured instants.

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Hermann Kopetz, Wilfried Steiner. 2024-09-28. Temporal Consistency of Data and Information in Cyber-Physical Systems. https://arxiv.org/abs/2409.19309

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