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Journal Articles ACM Transactions on Embedded Computing Systems (TECS) Year : 2016

Loosely Time-Triggered Architectures

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 nearly 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, a simplified version of the Time-Based protocol and optimizations for systems using broadcast communication. We also compare the LTTA approach with architectures based on clock synchronization.
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Dates and versions

hal-01408224 , version 1 (03-12-2016)

Identifiers

Cite

Guillaume Baudart, Albert Benveniste, Timothy Bourke. Loosely Time-Triggered Architectures. ACM Transactions on Embedded Computing Systems (TECS), 2016, 15, pp.Article 71. ⟨10.1145/2932189⟩. ⟨hal-01408224⟩
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