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Graphical Approach for Modeling of Safety and Variability in Product Lines
Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.
Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.
Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems. Volvo Construction Equipment, Eskilstuna, Sweden.ORCID iD: 0000-0003-4756-7285
2015 (English)In: 41st Euromicro Conference on Software Engineering and Advanced Applications SEAA15, 2015, p. 410-417Conference paper, Published paper (Refereed)
Abstract [en]

Reuse of already developed parts and concepts is a common approach in industry to reduce the time to market and reduce the development efforts. Industrial product lines are often grown over time and structured approaches to support decision-making and manage the complexity are lacking. When developing safety-critical products through product lines, evidence must be provided for all possible product configurations. The lack of a structured product line approach taking the functional safety dimension into consideration makes it challenging for practitioners to provide the required evidence. In this paper we (1) identify requirements that a variability management approach will need to fulfill, (2) discuss existing approaches and their limitations, (3) propose potential extension, (4) apply our approach in an industrial use case and (5) discuss its applicability and future work.

Place, publisher, year, edition, pages
2015. p. 410-417
Keywords [en]
Product Line Engineering, Functional Safety, VariabilityManagement, Model-based Development
National Category
Computer Systems
Identifiers
URN: urn:nbn:se:mdh:diva-30442DOI: 10.1109/SEAA.2015.74ISI: 000380478300059Scopus ID: 2-s2.0-84958258283ISBN: 978-1-4673-7585-6 (print)OAI: oai:DiVA.org:mdh-30442DiVA, id: diva2:886117
Conference
41st Euromicro Conference on Software Engineering and Advanced Applications SEAA15, 26-28 Aug 2015, Funchal, Portugal
Projects
ITS-EASY Post Graduate School for Embedded Software and SystemsSafeCer - Safety Certification of Software-Intensive Systems with Reusable ComponentsAvailable from: 2015-12-21 Created: 2015-12-21 Last updated: 2017-11-01Bibliographically approved
In thesis
1. Incorporating Functional Safety in Model-based Development of Product Lines
Open this publication in new window or tab >>Incorporating Functional Safety in Model-based Development of Product Lines
2016 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Product lines in industry are often based on an engineer’s focus on fast and feasible product instantiation rather than a precise product line development method and process as described in literature. When considering functional safety, we need a precise model that includes evidence for the safety of each variant of the product.Functional safety standards provide guidance to develop safety critical products and require that evidence is collected to prove the safety of the product. But today’s functional safety standards do not provide guidance on how to achieve functional safety in product lines. At the same time arguments need to be collected during development so that each product configuration is safe and is fulfilling the requirements of the standards. Providing these arguments requires tracing safety-related requirements and dependencies through the development process taking the impact of variability in different development artifacts into consideration.

In this thesis, we study the challenges of developing safety critical products in product lines. We explore industrial practices to achieve functional safety standard compliance in product lines by interviewing practitioners from different companies and by collecting the reported challenges and practices. This information helps us to identify improvement areas and we derive requirements that a product line engineering method needs to fulfill. Based on these findings we analyze variability management methods from the software product line engineering research domain to identify potential candidate solutions that can be adapted to support safety critical products. We provide an approach for capturing functional safety related characteristics in a model-based product line engineering method. We apply our method in an industrial case demonstrating the applicability.

Abstract [sv]

Produktlinjer inom industrin är oftast baserade på ingenjörernas vilja att snabbt och enkelt utveckla nya varianter, snarare än på någon precis utvecklingsmodell för produktlinjer beskriven i litteraturen. För att visa på funktionssäkerhet krävs en precis modell som innehåller argumenten för att påvisa säkerheten hos alla varianter av produkten. Funktionssäkerhetsstandarder ger en vägledning för att utveckla säkerhetskritiska produkter och kräver att belägg samlas för att bevisa produktens säkerhet. Men dagens funktionssäkerhetsstandarder beskriver inte hur man uppnå funktionssäkerhet i produkt linjer. Argument behöver samlas under utveckling som bevisar att varje produktkonfiguration är säker och uppfyller kraven i standarden. Detta kräver i sin tur att spåra beroenden till säkerhetsrelaterade krav genom utvecklingsprocessen och visa hur de påverkas av variabilitet. I denna avhandling studerar vi utmaningarna med att utveckla säkerhetskritiska produkter i produktlinjer. Vi undersöker industrins metoder för att uppnå funktionssäkerhet genom att intervjua experter från olika företag och sammanställa utmaningar och praxis. Denna information hjälper oss att identifiera förbättringsområden och vi beskriver de krav som en tilltänkt produktlinjeteknik måste uppfylla. Baserat på dessa resultat vi analyserar varianthanteringsmetoder som beskrivs inom området produktlinjemetoder (eng: product line engineering), för att identifiera potentiella kandidatlösningar vilka kunde anpassas för att stödja säkerhetskritiska produkter. Vi presenterar en metod för att hantera funktionssäkerhetsrelaterade egenskaper i en modellbaserad metod för att hantera produktlinjer. Vi tillämpar vår metod i ett industriellt fall för att demonstrera tillämpligheten.

Place, publisher, year, edition, pages
Västerås: Mälardalen University, 2016
Series
Mälardalen University Press Licentiate Theses, ISSN 1651-9256 ; 227
National Category
Embedded Systems
Research subject
Computer Science
Identifiers
urn:nbn:se:mdh:diva-31131 (URN)978-91-7485-253-0 (ISBN)
Presentation
2016-04-22, Delta, Mälardalens högskola, Västerås, 13:15 (Swedish)
Opponent
Supervisors
Available from: 2016-03-04 Created: 2016-02-24 Last updated: 2016-03-31Bibliographically approved

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Baumgart, Stephan

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