| 1. |
- Ashjaei, Seyed Mohammad Hossein, 1980-, et al.
(författare)
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Modeling and Timing Analysis of Vehicle Functions Distributed over Switched Ethernet
- 2017
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Ingår i: IECON 2017 - 43RD ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY. - 9781538611272 ; , s. 8419-8424
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Konferensbidrag (refereegranskat)abstract
- This paper proposes an approach to model switched Ethernet communication within a model- and component-based software development framework for vehicular distributed embedded systems. The paper also presents a method to extract the network timing model from the systems that use switched Ethernet networks. In order to provide a proof of concept, an existing industrial component model and its tool suite, namely RCM and Rubus-ICE respectively, are extended by implementing the modeling technique, the timing model extraction method and response-time analysis of the Ethernet AVB protocol. The extensions to RCM are backward compatible with the modeling and end-to-end timing analysis of traditional in-vehicle networks and legacy (previously developed) vehicular distributed embedded systems. Furthermore, the paper discusses the implementation and test strategy used in this work. Finally, the usability of the modeling approach and implemented timing analysis is demonstrated by modeling and time analyzing a vehicular application case study with the extended component model and tool suite.
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| 2. |
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| 3. |
- Bucaioni, Alessio, 1987-, et al.
(författare)
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Modelling and Timing Analysis of Real-time Applications on Evolving Automotive E/E Architectures using Rubus-ICE
- 2019
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Ingår i: Open Demo Session of Real-Time Systems 2019 RTSS@Work'19. - Hong Kong, HongKong.
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Konferensbidrag (refereegranskat)abstract
- The automotive E/E architectures are evolving from the traditional distributed architectures to upcoming consolidated domain architectures and possibly future centralised architectures. This paper demonstrates modelling and timing analysis of real-time embedded systems on contemporary automotive E/E architectures using the Rubus-ICE tool suite. The Rubus concept and tool suite, developed and evolved based on close academic-industrial collaboration, have been used in the automotive industry for over 25 years. The paper also demonstrates recent extensions and discusses proposals to support the modelling and timing analysis of the systems on future E/E architectures.
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| 4. |
- Lawson, Harold, et al.
(författare)
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Provisioning of Deterministic and Non-Deterministic Services for Vehicles: The Rubus Approach
- 2016
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Ingår i: 4th International Workshop on Critical Automotive Applications: Robustness & Safety CARS-2016. - Göteborg, Sweden.
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Konferensbidrag (refereegranskat)abstract
- Providing computer-based services for vehicle functions has evolved to the point where a large majority of functions are realized by software. However, the need to provide safety and security in critical functions such as braking, steering, motor control, etc. requires an approach that can guarantee the continuous reliable operation of the functions. At the same time, there are a variety of functions that are less critical from the vehicle operation perspective that can be provided where safety and security are less critical. From a vehicle manufacturers point of view, providing both types of services in an economic and reliable manner is a real challenge. To meet this challenge, we consider the Rubus Tool Suit for the software development and a well-proven (in industrial use for over twenty years) and certified (according to ISO 26262) operating system Kernel for its execution. In addition, a user-friendly approach to model- and component-based development concept called the “software circuits” has provided an approach to meet the demands of both safety-critical deterministic and as well as non-safety critical non-deterministic services. In this paper, a brief history of the evolution of Rubus approach as well as an overview of the driving concepts used in providing the Rubus products are described.
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| 5. |
- Mubeen, Saad, et al.
(författare)
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Academic-industrial Collaboration in the Vehicle Software Domain: Experiences and End-user Perspective
- 2016
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Ingår i: 4th International Workshop on Critical Automotive Applications. - Göteborg, Sweden.
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Konferensbidrag (refereegranskat)abstract
- In this paper we present a success story of academic-industrial collaboration in the vehicular domain. The collaboration has resulted in the development and evolution of a model- and component-based software development tool chain that is used to develop safety-critical, robust, and certified, control software for vehicles. The tool chain has been successfully used in the vehicle industry for about 20 years. The sustained development of the tool chain is based one a unique collaboration, described in this paper, where the collaborators form a clear value chain from academia, through tool-developer, to the end-users of the technology. We describe experiences of each collaborator with a focus on the end-user's perspective. Moreover, we highlight some ongoing and future works within this collaboration.
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| 6. |
- Mubeen, Saad, et al.
(författare)
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End-to-end Timing Analysis of Black-box Models in Legacy Vehicular Distributed Embedded Systems
- 2015
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Ingår i: 21st IEEE International Conference on Embedded and Real-Time Computing Systems and Applications RTCSA'15. - 9781467378550 ; , s. 149-158
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Konferensbidrag (refereegranskat)abstract
- A majority of existing techniques and tools, used in the vehicular industry, support the extraction of end-to-end timing models. Such models are used to perform timing analysis of distributed embedded systems at an abstraction level that is close to their implementation. This paper takes a first initiative to provide such a support at a higher level of abstraction. At such a level, the system can be modeled with inter-connected black-box models of nodes whose internal software architectures may not be available. However, most of the design decisions about network communication are available. This represents a typical scenario in the vehicular industry where most of the artifacts are reused from either legacy systems, other projects or previous releases of the vehicle. In this paper we present an approach for the extraction of end-to-end timing models at the highest level of abstraction used in the vehicular domain. Using these models, end-to-end path delay analysis of the systems can be performed at a higher abstraction level and at an early phase during the development. As a proof of concept we implement this technique in an industrial tool suite, Rubus-ICE, that is used for the development of these systems by several international companies. Using the extended tool, we conduct a vehicular-application case study.
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| 7. |
- Mubeen, Saad, et al.
(författare)
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Modeling of End-to-end Resource Reservations in Component-based Vehicular Embedded Systems
- 2016
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Ingår i: Software Engineering and Advanced Applications (SEAA), 2016 42th Euromicro Conference on. - 9781509028191 ; , s. 283-292
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Konferensbidrag (refereegranskat)abstract
- There is a plethora of models, techniques and toolsthat support model- and component-based software developmentof vehicular distributed embedded systems. However, a large ma-jority of them have a limited or no support to model and specifyend-to-end resource reservations on the software architecturesof these systems. Resource reservations allow flexibility duringthe development and execution of such complex systems withoutjeopardizing their predictable behavior. As a result, severalapplications in the system that share the same hardware platformcan be developed independently. In this paper we identify severalrequirements that any existing component model should fulfill inorder to support the modeling of end-to-end resource reservationson the software architectures of such systems. As a proof ofconcept, we extend the Rubus Component Model (RCM) byfulfilling these requirements. RCM is used for the development ofcontrol functionality in vehicular embedded systems by severalinternational companies. We also provide a technique to extractexecution models from the software architectures of these systemswith resource reservations. In order to show the usability of ourtechnique, we model a vehicular distributed embedded systemwith the extended component model and extract the executionmodel from the software architecture augmented with end-to-endresource reservations.
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| 8. |
- Mubeen, Saad, et al.
(författare)
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Modeling of Legacy Distributed Embedded Systems at Vehicle Abstraction Level
- 2016
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Ingår i: Proceedings - 2016 19th International ACM SIGSOFT Symposium on Component-Based Software Engineering, CBSE 2016. - 9781509025695 ; , s. 7-12
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Konferensbidrag (refereegranskat)abstract
- A large majority of existing software development approaches in the vehicle industrial domain have a limited or no modeling support to fully reuse legacy nodes at the highest abstraction, called the vehicle level. In this paper, we introduce a new technique for model-and component-based development of vehicular distributed embedded systems at the vehicle level. The proposed technique supports not only modeling of crude nodes or Electronic Control Units but also modeling of legacy nodes whose software architectures can be partially or completely reused. As a proof of concept, we implement the modeling technique in an industrial model, the Rubus Component Model. In order to show the usability of our approach, we model a vehicular application using the extended component model and its tool suite.
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| 9. |
- Mubeen, Saad, et al.
(författare)
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Supporting timing analysis of vehicular embedded systems through the refinement of timing constraints
- 2019
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Ingår i: Software and Systems Modeling. - : Springer Science and Business Media LLC. - 1619-1366 .- 1619-1374. ; 18:1, s. 39-69
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Tidskriftsartikel (refereegranskat)abstract
- The collective use of several models and tools at various abstraction levels and phases during the development of vehicular distributed embedded systems poses many challenges. Within this context, this paper targets the challenges that are concerned with the unambiguous refinement of timing requirements, constraints and other timing information among various abstraction levels. Such information is required by the end-to-end timing analysis engines to provide pre-run-time verification about the predictability of these systems. The paper proposes an approach to represent and refine such information among various abstraction levels. As a proof of concept, the approach provides a representation of the timing information at the higher levels using the models that are developed with EAST-ADL and Timing Augmented Description Language. The approach then refines the timing information for the lower abstraction levels. The approach exploits the Rubus Component Model at the lower level to represent the timing information that cannot be clearly specified at the higher levels, such as trigger paths in distributed chains. A vehicular-application case study is conducted to show the applicability of the proposed approach.
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| 10. |
- Mubeen, Saad, et al.
(författare)
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Developing predictable vehicular distributed embedded systems on multi-core
- 2016
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Ingår i: Advances in Intelligent Systems and Computing, Volume 448. - Cham : Springer International Publishing. - 9783319324661 ; , s. 1273-1277
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Konferensbidrag (refereegranskat)abstract
- In this paper we address the challenges related to supporting modeland component-based development of predictable software for vehicular distributed embedded systems, utilizing multi-core platforms. We present a research plan for the development of new methods and techniques to deal with these challenges. The techniques will support various aspects such as modeling of the software architecture; supporting multiple criticality levels; verifying predictability of the system using end-to-end timing analysis; code generation; and providing a predictable runtime support on multi-core platforms by virtualizing a certified single-core real-time operating system. As a proof of concept, we will implement the newly developed techniques in a commercial tool chain (Rubus-ICE). The efficacy of the newly developed techniques and the extended tool chain will be demonstrated on the industrial case studies.
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