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Design of an unknown input observer to enhance driver experience of electric power steering systems

Reichhartinger, M; Spurgeon, SK; Weyrer, M; (2017) Design of an unknown input observer to enhance driver experience of electric power steering systems. In: 2016 European Control Conference (ECC). (pp. pp. 269-274). IEEE Green open access

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Abstract

Electric power steering (EPS) systems assist the driver during manoeuvres by applying an additional steering torque generated by an electric motor. Although there are many advantages for electric actuated steering systems including fuel efficiency, they are known to deteriorate the feel of the steering as experienced by the driver. This paper presents a sliding mode observer based estimation concept which provides signals to evaluate and improve perception and feel of the steering as experienced by the driver. The proposed strategy is based on a physically motivated dynamic model of a power steering system and the measurements considered are typically available in any modern vehicle. The performance of the estimator is investigated using numerical simulation as well as experimental results obtained using a laboratory steering testbed.

Type: Proceedings paper
Title: Design of an unknown input observer to enhance driver experience of electric power steering systems
Event: 2016 European Control Conference (ECC), Aalborg
ISBN-13: 9781509025916
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/ECC.2016.7810297
Publisher version: https://doi.org/10.1109/ECC.2016.7810297
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Automotive electronics; observers; steering systems; vehicle dynamics; design; driver experience; electric power steering systems; sliding mode observer based estimation; unknown input observer; vehicle dynamics; Force; Gears; Observers; Shafts; Torque; Vehicles; Wheels
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/1549781
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