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Timed Simulation of Extended AADL-Based Architecture Specifications with Timed Abstract State Machines
Mälardalen University, School of Innovation, Design and Engineering. (Formal modeling, analysis, and verification of real-time and embedded systems)ORCID iD: 0000-0003-1119-611X
Faculty of ICT, Swinburne University of Technology, Hawthorn VIC 3122, Australia.
Mälardalen University, School of Innovation, Design and Engineering.ORCID iD: 0000-0003-0904-3712
2009 (English)In: Architectures for Adaptive Software Systems: 5th International Conference on the Quality of Software Architectures, QoSA 2009, East Stroudsburg, PA, USA, June 24-26, 2009 Proceedings, Berlin: Springer, 2009, 101-115 p.Chapter in book (Refereed)
Abstract [en]

The Architecture Analysis and Design Language (AADL) is a popular language for architectural modeling and analysis of software intensive systems in application domains such as automotive, avionics, railway and medical systems. These systems often have stringent real-time requirements. This paper presents an extension to AADL's behavior model using time annotations in order to improve the evaluation of timing properties in AADL. The translational semantics of this extension is based on mappings to the Timed Abstract State Machines (TASM) language. As a result, timing analysis with timed simulation or timed model checking is possible. The translation is supported by art Eclipse-based plug-in and the approach is validated with a case study of an industrial production cell system.

Place, publisher, year, edition, pages
Berlin: Springer, 2009. 101-115 p.
Series
Lecture Notes in Computer Science, ISSN 0302-9743 ; 5581
National Category
Computer Science
Identifiers
URN: urn:nbn:se:mdh:diva-14517DOI: 10.1007/978-3-642-02351-4_7ISI: 000270318900007Scopus ID: 2-s2.0-70350675939ISBN: 978-364202350-7 OAI: oai:DiVA.org:mdh-14517DiVA: diva2:517403
Conference
Proceedings of the Fifth International Conference on the Quality of Software Architectures
Available from: 2012-04-27 Created: 2012-04-23 Last updated: 2014-06-22Bibliographically approved
In thesis
1. Methods and Tool Support for Analyzing Architectural Models of Embedded Systems
Open this publication in new window or tab >>Methods and Tool Support for Analyzing Architectural Models of Embedded Systems
2012 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Embedded systems are ubiquitous in the modern world. They are microcomputers most often included incomplete devices consisting of software and hardware. Embedded systems range from small devices to large systems monitoring and controlling complex processes. Design and development of such systems is a complex task, since embedded systems often need to fulfill extra-functional requirements, on top of functional ones, within constrained amounts of platform resources. Some embedded systems are mission critical; hence, they are not allowed to fail during the mission. One way to ensure that a system works in accordance to its specification is to define the system in an Architecture Description Language (ADL) and apply formal verification methods. The Architecture Design and Analysis Language (AADL) has become popular in the avionic and automobile industry, and is equipped with several annexes, among them the Behavior Annex. However, AADL still misses a formal semantics, which prevents the possibility to prove correctness of architecture features by performing model checking on AADL models. Moreover, AADL does not support time annotations, which prevents modeling of real-time systems in AADL.

In this thesis, we address these issues by presenting a formal analysis framework including a denotationalsemantics for a subset of the AADL and its Behavior Annex, which evaluates properties defined in Computation Tree Logic (CTL) by providing model checking. Model checking is a formal verification method that has proved to be powerful as well as effective. Our AADL-semantics is supported by a tool with an implementation of the semantics in Standard ML, which in turn is encapsulated in an Eclipse plugin.We also present a time annotation extension of AADL, implemented in a tool translating time annotated AADL and its Behavior Annex into the Timed Abstract State Machine (TASM) for simulation of real-time features. Another closely related problem is how to achieve optimal component distribution; in order to address this issue we have developed a tool that perform near-optional component distribution in regard to a series of parameters.

The research results, which have been validated thought case studies, provides the possibility for a system engineer to model a system and prove its correctness. The research has been conducted in the context of the PROGRESS research center, for predictable embedded software systems.

Place, publisher, year, edition, pages
Västerås: Mälardalen University, 2012
Series
Mälardalen University Press Licentiate Theses, ISSN 1651-9256 ; 153
National Category
Computer Science
Research subject
Computer Science
Identifiers
urn:nbn:se:mdh:diva-14521 (URN)978-91-7485-071-0 (ISBN)
Presentation
2012-12-14, Lambda, Mälardalens högskola, Västerås, 10:00 (English)
Opponent
Supervisors
Available from: 2012-05-10 Created: 2012-04-23 Last updated: 2013-12-03Bibliographically approved

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