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The requirements on increasing functionality, quality, and, customisation, while reducing cost has lead to the introduction of an architecture centred development process for electronic systems at Volvo Cars. This process enables better control of system integration and achieving non-functional requirements, such as reusability, understandability, etc. The(More)
This paper discusses a highly portable model for estimations of the size and execution time of software on diierent microprocessors. The model is based on a small number of easily obtained characteristics of the processor to be evaluated, and it is intended to be used by e m bedded system designers in early phases of the design, to support design decisions(More)
This paper studies the problem of automatically selecting a suitable system architecture for implementing a real-time application. Given a library of hardware components, it is shown how an architecture can be synthesized with the goal of fulfilling the real-time constraints stated in the system's specification. In case the selected architecture contains(More)
This paper compares different scheduling policies applied to distributed systems intended for automotive real-time control applications. We describe the characteristics of systems using fixed priority (FP) and static cyclic (SC) scheduling of processors and bus communication, with combinations ranging from FP bus-FP processors to SC bus-SC processors. FP(More)
In the automotive industry, embedded systems and software play an increasingly important role in defining the characteristics of the vehicles. Both the vehicles and the embedded systems are designed as product lines, and two distinct architecture processes can be identified. The revolutionary process develops the architecture of a new product line, and(More)
Context: Traditionally, Embedded Systems (ES) are tightly linked to physical products, and closed both for communication to the surrounding world and to additions or modifications by third parties. New technical solutions are however emerging that allow addition of plug-in software, as well as external communication for both software installation and data(More)