The development of automotive systems shows an increasing integration of electronic sensors, microcomputers and actuators for single components, engine, drive-chain, suspensions and brakes. After considering electronic driver assisting systems such as ABS (Antilock Brake System), TCS (Traction Control System), ASR, ESP (Electronic Stability Control System), BA (Brake Assistant) the developments towards drive-by-wire systems with and without mechanical, or hydraulic backup are considered. Drive-by-wire systems consist of an operating unit (steering wheel, braking pedal) with an electrical output, a haptic feedback to the driver, bus systems, microcomputers, power electronics, and electrical actuators. For their design safety integrity methods like reliability, fault tree, hazard analysis and risk classification are required. Different fault tolerance principles with various forms of redundancy are considered resulting in fail-operational, fail-silent and fail-safe systems. Fault-detection methods are discussed for use in low-cost components. This is followed by some principles for fault-tolerant design of sensors, actuators and communication. A brake-by-wire system with electronic pedal and electrical brakes is then considered in more detail showing the design of the components and the overall architecture. An outlook then shows the further development of drive-by-wire systems.


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    Title :

    Fault-tolerant drive-by-wire systems - concepts and realizations


    Additional title:

    Fehlertolerante, elektronische Fahrzeugsteuerung nach dem Prinzip drive-by-wire - Konzepte und Realisierungen


    Contributors:
    Isermann, R. (author) / Schwarz, R. (author) / Stölzl, S. (author)


    Publication date :

    2000


    Size :

    15 Seiten, 19 Bilder, 1 Tabelle, 51 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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    Fault Tolerant Components for Drive-by-Wire Systems

    Isermann, R. / VDI | British Library Conference Proceedings | 2001


    A fault-tolerant architecture for drive-by-wire automotive system

    Santos, Max Mauro / Dutra, Thiago Fernandes | Tema Archive | 2008


    An electromechanical fault-tolerant pedal module for drive-by-wire

    Stoelzl,S. / Isermann,R. / Boehm,J. et al. | Automotive engineering | 1999


    Time-Constrained Fault Tolerant X-By-Wire Systems

    Khilar, P.M. / Mahapatra, S. | British Library Online Contents | 2009