Loosely Time-Triggered Architectures: Improvements and Comparisons

Guillaume Baudart 1 Timothy Bourke 1 Albert Benveniste 2
1 Parkas - Parallélisme de Kahn Synchrone
DI-ENS - Département d'informatique de l'École normale supérieure, ENS Paris - École normale supérieure - Paris, Inria Paris-Rocquencourt, CNRS - Centre National de la Recherche Scientifique : UMR 8548
2 HYCOMES - Modélisation hybride & conception par contrats pour les systèmes embarqués multi-physiques
Inria Rennes – Bretagne Atlantique , IRISA-D4 - LANGAGE ET GÉNIE LOGICIEL
Abstract : Loosely Time-Triggered Architectures (LTTAs) are a proposal for constructing distributed embedded control systems. They build on the quasi-periodic architecture, where computing units execute 'almost periodically', by adding a thin layer of middleware that facilitates the implementation of synchronous applications. In this paper, we show how the deployment of a synchronous application on a quasi-periodic architecture can be modeled using a synchronous formalism. Then we detail two protocols, Back-Pressure LTTA, reminiscent of elastic circuits, and Time-Based LTTA, based on waiting. Compared to previous work, we present controller models that can be compiled for execution and a simplified version of the Time-Based protocol. We also compare the LTTA approach with architectures based on clock synchronization.
Type de document :
Communication dans un congrès
Proceedings of the 12th International Conference on Embedded Software (EMSOFT '15), Oct 2015, Amsterdam, Netherlands. Proceedings of the 12th International Conference on Embedded Software (EMSOFT '15), 2015, <10.1109/EMSOFT.2015.7318263>
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Guillaume Baudart, Timothy Bourke, Albert Benveniste. Loosely Time-Triggered Architectures: Improvements and Comparisons. Proceedings of the 12th International Conference on Embedded Software (EMSOFT '15), Oct 2015, Amsterdam, Netherlands. Proceedings of the 12th International Conference on Embedded Software (EMSOFT '15), 2015, <10.1109/EMSOFT.2015.7318263>. <hal-01243005>

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