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Wheel-individual estimation of the friction potential for split friction and changing friction conditions for the application in an automated emergency braking system

: Lex, Cornelia; Kobialka, Hans-Ulrich; Eichberger, Arno

Preprint urn:nbn:de:0011-n-2565347 (566 KByte PDF)
MD5 Fingerprint: 55087f6ded9e6e84a0519abca13ebe49
Erstellt am: 3.9.2013

TÜV SÜD Automotive, Garching: plus, 4th International Munich Chassis Symposium 2013. Proceedings. CD-ROM : 13 and 14 June 2013, Munich, Germany
Wiesbaden: ATZlive, 2013
International Munich Chassis Symposium <4, 2013, Munich>
Internationales Münchner Fahrwerk-Symposium <4, 2013, Munich>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer IAIS ()
automated emergency breaking; wheel friction; car industry; chassis

Including information of the current road surface conditions can significantly improve the effectiveness of an Automated Emergency Braking System (AEB) to avoid accidents or reduce the injury severity in rear-end crashes. A method to estimate the friction potential based on on-board sensor information is shown in this work. This work expands the scope of existing investigations on whether the accuracy needed for the warning and intervention strategies of AEB can be reached with the proposed method. First, the bandwidth of surface conditions investigated is extended by including low friction surfaces comparable to ice. Second, situations of changing surface conditions and wheel-individual surface conditions were evaluated. Finally, estimation based on different sensor sets was conducted wi th regard to series application. The investigations are based on measurements performed on a proving ground. The main emphasis was placed on estimation during longitudinal driving conditions. The used sensors include advanced vehicle dynamics measurement equipment as well as standard on-board sensors of the vehicle.