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1 2009

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On safety and dependability of automotiye engineering regarding applicable tools and legislation

Fulep T., Voith A.

Journal of KONES

2009

Vol. 16, No. 4

123-134

In today's automotive industry, companies are organized into simultaneous engineering teams to develop their new products. The new way of doing business enables some companies to develop their new products quicker and cheaper with higher quality and reliability. In the past few years there has been the tendency to increase the safety of vehicles by introducing intelligent assistance systems that help the driver to cope with critical driving situations. These functions are characterized by the active control of the driving dynamics by distributed assistance systems, which therefore need a reliable communication network. The faults in the electronic components, which control these functions, are safety-critical. However, the assistance functions deliver only an add-on service in accordance with a fail-safe strategy for the electronic components. If there is any doubt about the correct behaviour of the assistance system, it will be switched off. For by-wire systems, without a mechanical back-up, a new dimension of safety requirements for automotive electronics is reached. After a fault the system has to be fail-tolerant until a safe state is reached. realizing that road vehicles, mostly commercial vehicles taking part over proportionally in accidents, become more and more complex indicates that suitable and adaptable analysis methods are crucial to be applied with appropriate certification body.