In this paper, different treatment-methods for the dependability analysis of fault-tolerant vehicle systems are discussed. To increase performance and speed, several requirements have to be met in a vehicle considering the demand for safety and riding comfort, and these criteria are in contradiction with each other. Therefore, fault-tolerant and fail-safe subsystems which are able to tolerate component malfunctions must be built into the vehicle systems in order to retain the ability to operate in case of any failure. Functionally re-configurable mechanisms which can change their functions if a failure has occurred and it has been detected can be applied in these subsystems. On the basis of fault-tree models, for the dependability analysis of these safety-oriented systems several methods can be applied, namely the macro-models, the Markov chains, and the multi-state models, in order to provide results from different points of view. This paper illustrates these methods in a typical safety-oriented vehicle system.
|Number of pages||10|
|Publication status||Published - Dec 1 1998|
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