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Erschienen in:
2018 | OriginalPaper | Buchkapitel
Modeling AUTOSAR Implementations in Simulink
verfasst von : Jian Chen, Manar H. Alalfi, Thomas R. Dean, S. Ramesh
Erschienen in: Modelling Foundations and Applications
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Abstract
AUTOSAR (AUTomotive Open System ARchitecture) is an open industry standard for the automotive sector. It defines the automotive three-layered software architecture. One layer is application layer, where functional behaviours are encapsulated in Software Components (SW-Cs). Inside SW-Cs, a set of runnable entities represent the internal behaviours and are realized as a set of tasks.To address AUTOSAR’s lack of support for modelling behaviours of runnables, other modelling languages such as Simulink are employed. Simulink simulations assume tasks are completed in zero execution time, while real executions require a finite execution time. This time mismatch can result in failures of analyzing an unexpected runtime behaviour during the simulation phase. This paper extends the Simulink environment to accommodate the timing relations of tasks during simulation. We present a Simulink block that can schedule tasks with a non-zero simulation time. This enables more realistic analysis during the model development stage.