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Simulation Tools for Dynamically Reconfigurable Automotive Embedded Systems - An Evaluation of TrueTime
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Machine Design (Div.). (Embedded Control Systems)
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Machine Design (Div.). (Embedded Control Systems)ORCID iD: 0000-0001-7048-0108
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Machine Design (Div.). (Embedded Control Systems)
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Machine Design (Div.). (Embedded Control Systems)ORCID iD: 0000-0002-4300-885X
2007 (English)In: Real-Time in Sweden (RTiS 07), 2007Conference paper, Published paper (Refereed)
Abstract [en]

This paper investigates the requirements for simulation as a basis for architecture verification and validation in the development of self-configurable automotive embedded systems. One central characteristic of such systems is that the system configuration, in terms of functionalities, software and hardware components, as well as their properties and how they are related, varies dynamically according to environmental and internal conditions. The reasons for this could for example be due to the needs of optimized resource utilization, effective software maintenance, integration of external devices, and error handling. Both generic and specific requirements formulated for dynamic reconfiguration are presented. In this paper, we focus in particular on TrueTime, a Matlab/Simulink utility for simulation of real-time control systems. TrueTime is promising for supporting dynamically configurable systems but is found to lack memory and middleware (MW) abstractions, and does not fully support dynamic tasks. Since TrueTime provides abstractions similar to the programming of a real system, care has to be taken to ensure the separation between applications, middleware and the lower level platform. We finally discuss how the simulation environment can be linked to the architectural design and the run-time system.

Place, publisher, year, edition, pages
2007.
National Category
Embedded Systems
Identifiers
URN: urn:nbn:se:kth:diva-10592OAI: oai:DiVA.org:kth-10592DiVA: diva2:220443
Conference
Real-Time in Sweden (RTiS'07), Västerås, Sweden, August 21-22, 2007.
Note
QC 20101102Available from: 2009-06-01 Created: 2009-06-01 Last updated: 2012-02-10Bibliographically approved
In thesis
1. Towards Model-Based Development of Self-Managing Automotive Systems: Modeling, Simulation, Model Transformations and Algorithms: Supporting the Development of the DySCAS Middleware
Open this publication in new window or tab >>Towards Model-Based Development of Self-Managing Automotive Systems: Modeling, Simulation, Model Transformations and Algorithms: Supporting the Development of the DySCAS Middleware
2009 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

With the increased usage of electronics, embedded computer systems, software and networks in modern vehicles, the complexity is also increasing in terms of the development process, functionalities as well as their implementation. On one hand there is a need for efficient and systematic development, and on the other hand the systems are required to have enhanced post-deployment time configuration management support. This promises not only to reduce the time to market but also increase the development and maintenance efficiencies. Moreover, the possibility to adapt system behavior and structure by software can improve the overall traffic infrastructure, increase robustness and safety and at the same time enable changeable user defined configurations and addition of new features throughout a vehicle's life cycle. However, the dynamic configuration management characteristics increase software complexity and provide new failure modes. Therefore, there is a need for appropriate development support.

This thesis addresses model-based development and dynamic configuration management for automotive systems in context of the DySCAS project. The framework for dynamically self-configuring middleware from the DySCAS project is the main object of study. The major focus is on algorithms for dynamic reconfiguration, model transformation, modeling and simulation. Requirements for self-managing systems with self-configuration, self-healing, self-optimization and self-protection characteristics and the simulation platforms for early analysis, verification and validation are also identified. A mapping scheme from UML™ to SimEvents™, evaluation of tools for simulating self-managing systems, simulations of dynamic reconfigurations and a foundation for a complete simulation environment are the major outcomes of this thesis.

Place, publisher, year, edition, pages
Stockholm: KTH, 2009. xii, 36 p.
Series
Trita-MMK, ISSN 1400-1179 ; 2009-12
Keyword
Dynamic Reconfiguration, DySCAS, Self-Managing Systems, Load Balancing, Quality of Service (QoS), Model-Based Development, Modeling, Simulation, Model Transformation, Middleware, Embedded Systems, Component Based Design, Unified Modeling Language (UML™), Discrete Event Systems, Real-Time Systems, Software Architecture, Simulink®, SimEvents™, Distributed Systems.
Identifiers
urn:nbn:se:kth:diva-10598 (URN)978-91-7415-374-3 (ISBN)
Presentation
2009-06-10, A425, KTH, Brinellvägen 83, Stockholm, 15:00 (English)
Opponent
Supervisors
Available from: 2009-06-08 Created: 2009-06-01 Last updated: 2010-11-02Bibliographically approved

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Chen, DeJiuTörngren, Martin

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