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A TASM-based requirements validation approach for safety-critical embedded systems
Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.ORCID-id: 0000-0002-2615-6842
Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.ORCID-id: 0000-0002-7366-7186
Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.ORCID-id: 0000-0003-0904-3712
2014 (engelsk)Inngår i: 19th International Conference on Reliable Software Technologies, Ada-Europe 2014, 2014, s. 43-57Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Requirements validation is an essential activity to carry out in the system development life cycle, and it confirms the completeness and consistency of requirements through various levels. Model-based formal methods can provide a cost-effective solution to requirements validation in a wide range of domains such as safety-critical applications. In this paper, we extend a formal language Timed Abstract State Machine (TASM) with two newly defined constructs Event and Observer, and propose a novel requirements validation approach based on the extended TASM. Specifically, our approach can: 1) model both functional and non-functional (e.g. timing and resource consumption) requirements of the system at different levels and, 2) perform requirements validation by utilizing our developed toolset and a model checker. Finally, we demonstrate the applicability of our approach in real world usage through an industrial case study of a Brake-by-Wire system.

sted, utgiver, år, opplag, sider
2014. s. 43-57
Serie
Lecture Notes in Computer Science, ISSN 0302-9743 ; 8454
HSV kategori
Identifikatorer
URN: urn:nbn:se:mdh:diva-25695DOI: 10.1007/978-3-319-08311-7_5ISI: 000360100800005Scopus ID: 2-s2.0-84903577705ISBN: 9783319083100 (tryckt)OAI: oai:DiVA.org:mdh-25695DiVA, id: diva2:734830
Konferanse
19th International Conference on Reliable Software Technologies, Ada-Europe 2014
Tilgjengelig fra: 2014-07-21 Laget: 2014-07-18 Sist oppdatert: 2018-02-23bibliografisk kontrollert
Inngår i avhandling
1. An Observer-Based Technique with Trace Links for Requirements Validation in Embedded Real-Time Systems
Åpne denne publikasjonen i ny fane eller vindu >>An Observer-Based Technique with Trace Links for Requirements Validation in Embedded Real-Time Systems
2014 (engelsk)Licentiatavhandling, med artikler (Annet vitenskapelig)
Abstract [en]

With the growing complexity of embedded real-time systems, requirements validation becomes an ever-more critical activity for developing such systems. Studies have revealed that most of the anomalies, discovered in the development of complex systems, belong to requirement and specification phases. To ease the situation, many efforts have been investigated into the area. Model-based techniques, enabling formal semantics and requirements traceability, are emerging as promising solutions to cost-effective requirements validation. In these techniques, the functional behaviors derived from lower-level requirements are specified in terms of analyzable models at a certain level of abstraction. Further, upper-level requirements are formalized into verifiable queries and/or formulas. Meanwhile, trace links between requirements at various levels of abstraction as well as between requirements and subsequent artifacts (such as verifiable queries and/or formulas, and analyzable models) are built, through which the queries and/or formulas can be fed into the corresponding models. However, such model-based techniques suffer from some limitations, such as how to support semi- or fully-automatic trace links creation between diverse development artifacts, how to ease the demand of heavy mathematics background knowledge to specify queries and/or formulas, and how to analyze models without encountering the state explosion problem. 

 

In this thesis, we cover two aspects centering around requirements validation to ease the aforementioned limitations, which are mainly about requirements traceability and model-based requirements validation. In particular, the technical contributions are four-fold: 1) we have introduced an improved VSM-based requirements traceability creation/recovery approach using a novel context analysis and, 2) we have proposed a lightweight model-based approach to requirements validation by using the Timed Abstract State Machine (TASM) language with newly defined Observer and Event constructs and, 3) we have combined our model-based approach with a restricted use case modeling approach for feature-oriented requirements validation and, 4) we have improved the Observer construct of TASM via proposing a new observer specification logic to facilitate the observer specification, as well as defining the corresponding observer execution process. Finally, we have demonstrated the applicability of our contributions in real world usage through various applications.

sted, utgiver, år, opplag, sider
Västerås: Mälardalen University, 2014
Serie
Mälardalen University Press Licentiate Theses, ISSN 1651-9256 ; 177
HSV kategori
Forskningsprogram
datavetenskap
Identifikatorer
urn:nbn:se:mdh:diva-25876 (URN)978-91-7485-160-1 (ISBN)
Presentation
2014-10-13, Kappa, Mälardalens högskola, Västerås, 13:15 (engelsk)
Opponent
Veileder
Tilgjengelig fra: 2014-09-05 Laget: 2014-09-05 Sist oppdatert: 2014-10-06bibliografisk kontrollert

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