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Transformation of component models to real-time models
Mälardalen University, Department of Computer Science and Electronics.
2005 (English)Licentiate thesis, monograph (Other scientific)
Abstract [en]

Industry is constantly looking for new developments in software for use in increasingly complex computer applications. Today, the development of component-based systems is an attractive area for both Industry and Academia. The systems we focus on in this thesis are embedded computers, in particular those in automotive systems. A modern car incorporates several embedded computers that control different functions of the car, e.g., anti-spin and anti-lock breaks. The main purpose of this thesis is to investigate how component technologies for use in embedded systems can reduce resource usage without compromising non-functional requirements, such as timeliness. The component-technologies available have not yet been used extensively in the vehicular domain. To understand why this is the case we have conducted a survey and performed evaluations of the requirements of the vehicular industry with respect to software and software development. The purpose of the evaluation was to provide a foundation for defining models, methods and tools for component-based software engineering. The main contribution of this work is the implementation and evaluation of a framework for resource-efficient mappings between component-models and real-time systems. Few component technologies today consider the mapping between components and run-time tasks. We show how effective mappings can reduce memory usage and CPU-overhead. The implemented framework utilizes genetic algorithms to find feasible, resource efficient mappings. We show how component-models designed for resource constrained safety-critical embedded real-time systems can use powerful compile-time techniques to realize the component-based approach and ensure predictable behaviour. Further, we propose a resource reclaiming strategy for component-based real-time systems, to decrease the impact of pessimistic execution time predictions. In our approach, components run in different quality levels as unused processor time is accumulated.

Place, publisher, year, edition, pages
Västerås: Institutionen för Datavetenskap och Elektronik , 2005. , 159 p.
Series
Mälardalen University Press Licentiate Theses, ISSN 1651-9256 ; 47
National Category
Computer Science
Research subject
Datavetenskap
Identifiers
URN: urn:nbn:se:mdh:diva-23ISBN: 91-88834-55-7 (print)OAI: oai:DiVA.org:mdh-23DiVA: diva2:120683
Presentation
2005-04-13, Zeta, 13:15
Opponent
Available from: 2005-01-01 Created: 2005-01-01

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf