| Abstract: | Loosely Time-Triggered Architectures (LTTAs) are a proposal forconstructing distributing embedded control systems. They build onquasi-periodic systems, where computing units execute almostperiodically, by adding a thin layer of middleware that facilitatesthe deployment of synchronous applications.In this paper, we show how the deployment of a synchronous applicationon a quasi-periodic architecture can be modeled using a synchronousformalism. Then we detail two LTTA protocols, Back-PressureLTTA reminiscent of elastic circuits, and a new class ofTime-Based LTTA. Finally, we compare the LTTA approach to clocksynchronization protocols which are becoming more an more commonnowadays. Joint work with Albert Benveniste (INRIA) |