OSEKtime: A Dependable Real-Time Fault-Tolerant Operating System and Communication Layer as an Enabling Technology for By-Wire Applications
Stefan Poledna, Martin Glück, Christian Tanzer, Samuel Boutin, Elmar Dilger, Thomas Führer, Christian Ebner, Emmerich Fuchs, Ralf Belschner, Bernd Hedenetz, Bettina Holzmann, Anton Schedl, Roman Nossal, Bernd Pfaffeneder, Thomas Ringler, Yaroslav Domaratsky, Andreas Krüger, Andree Zahir · SAE technical papers on CD-ROM/SAE technical paper series · 2000
The new generation of drive-by-wire systems currently under development has demanding requirements on the electronic architecture. Functions such as brake-by-wire or steer-by-wire require continued operation even in the presence of component failures. The electronic architecture must therefore provide fault-tolerance and real-time response. This in turn requires the operating system and the communication layer to be predictable, dependable and composable. It is well known that this properties are best supported by a time-triggered approach. A consortium consisting of German and French car manufacturers and suppliers, which aims at becoming a working group within the OSEK/VDX initiative, the OSEKtime consortium, is currently defining a specification for a time-triggered operating system and a fault-tolerant communication layer.1 The operating system and the communication layer are based on applicable interfaces of the OSEK/VDX standard. This paper describes the basic concepts of these two service layers and the electronic architecture.