Abstract
Embedded systems are electronic devices that function in the context of a physical environment, by sensing and reacting to a set of stimuli. To simplify the design of embedded systems, different parts are best described using different notations and analyze with different techniques, i.e., the system is said to be heterogeneous. We informally refer to the notation and the rules that are used to specify and verify the elements of heterogeneous systems and their collective behavior as a model of computation. In this paper, the use of conservative approximations (recently introduced by the authors) is reviewed to establish relationships between different models of computation in a design. After presenting the basic definitions, we propose three different models at different levels of abstraction for describing a system and the progression towards its implementation. Then, we derive associated conservative approximations starting from simple homomorphisms between sets of behaviors of the different models.
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Passerone, R., Sangiovanni-Vincentelli, A.L. (2008). Approximating Behaviors in Embedded System Design. In: Degano, P., De Nicola, R., Meseguer, J. (eds) Concurrency, Graphs and Models. Lecture Notes in Computer Science, vol 5065. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-68679-8_44
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DOI: https://doi.org/10.1007/978-3-540-68679-8_44
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