AADL modeling and analysis of hierarchical schedulers
Proceedings of the 2007 ACM international conference on SIGAda annual international conference
Electronic Notes in Theoretical Computer Science (ENTCS)
System modeling and transformational design refinement in ForSyDe [formal system design]
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
Toward polychronous analysis and validation for timed software architectures in AADL
Proceedings of the Conference on Design, Automation and Test in Europe
Exploring system architectures in AADL via Polychrony and SynDEx
Frontiers of Computer Science: Selected Publications from Chinese Universities
Polychronous modeling, analysis, verification and simulation for timed software architectures
Journal of Systems Architecture: the EUROMICRO Journal
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The design of embedded systems from multiple views and heterogeneous models is ubiquitous in avionics as, in particular, different high-level modeling standards are adopted for specifying the structure, hardware and software components of a system. The system-level simulation of such composite models is necessary but difficult task, allowing to validate global design choices as early as possible in the system design flow. This paper presents an approach to the issue of composing, integrating and simulating heterogeneous models in a system co-design flow. First, the functional behavior of an application is modeled with synchronous data-flow and statechart diagrams using Simulink/Gene-Auto. The system architecture is modeled in the AADL standard. These highlevel, synchronous and asynchronous, models are then translated into a common model, based on a polychronous model of computation, allowing for a Globally Asynchronous Locally Synchronous (GALS) interpretation of the composed models. This translation is implemented as an automatic model transformation within Polychrony, a toolkit for embedded systems design. Simulation, including profiling and value change dump demonstration, has been carried out based on the common model within Polychrony. An avionic case study, consisting of a simplified doors and slides control system, is presented to illustrate our approach.