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Embedded systems assume increasing responsibilities in safety-critical automotive applications. For this class of applications, we have adopted a co-design approach based on successive validation phases. The first and most important design phase operates directly on an executable system specification, with a particular focus on fault modeling and robustness criteria, such as liveness and determinism. The second phase synthesizes subsystems into independent software processes that interact asynchronously with each other; the third phase results in a hardware/software prototype, for example a combination of FPGA and Microcontroller. We have applied this approach to the design of a bus-based airbag system.
Fault tolerance, embedded sytems, hardware-software codesign, automotive air bags

R. von Hanxleden, S. Kupczyk and A. Botorabi, "A Codesign Approach for Safety-Critical Automotive Applications," in IEEE Micro, vol. 18, no. , pp. 66-79, 1998.
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