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Reducing Energy Demand Using Wheel-Individual Electric Drives to Substitute EPS-Systems

Author

Listed:
  • Jürgen Römer

    (Schaeffler Technologies AG & Co., KG, Rintheimer Querallee 2, 76131 Karlsruhe, Germany)

  • Philipp Kautzmann

    (Karlsruhe Institute of Technology, Institute of Vehicle System Technology, Kaiserstr. 12, 76131 Karlsruhe, Germany)

  • Michael Frey

    (Karlsruhe Institute of Technology, Institute of Vehicle System Technology, Kaiserstr. 12, 76131 Karlsruhe, Germany)

  • Frank Gauterin

    (Karlsruhe Institute of Technology, Institute of Vehicle System Technology, Kaiserstr. 12, 76131 Karlsruhe, Germany)

Abstract

The energy demand of vehicles is influenced, not only by the drive systems, but also by a number of add-on systems. Electric vehicles must satisfy this energy demand completely from the battery. Hence, the use of power steering systems directly result in a range reduction. The “e 2 -Lenk” joint project funded by the German Federal Ministry of Education and Research (BMBF) involves a novel steering concept for electric vehicles to integrate the function of steering assistance into the drive-train. Specific distribution of driving torque at the steered axle allows the steering wheel torque to be influenced to support the steering force. This provides a potential for complete substitution of conventional power steering systems and reduces the vehicle’s energy demand. This paper shows the potential of wheel-individual drives influencing the driver’s steering torque using a control technique based on classical EPS control plans. Compared to conventional power-assisted steering systems, a reduced energy demand becomes evident over a wide range of operating conditions.

Suggested Citation

  • Jürgen Römer & Philipp Kautzmann & Michael Frey & Frank Gauterin, 2018. "Reducing Energy Demand Using Wheel-Individual Electric Drives to Substitute EPS-Systems," Energies, MDPI, vol. 11(1), pages 1-11, January.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:1:p:247-:d:127864
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    Cited by:

    1. Junnian Wang & Xiandong Wang & Zheng Luo & Francis Assadian, 2020. "Active Disturbance Rejection Control of Differential Drive Assist Steering for Electric Vehicles," Energies, MDPI, vol. 13(10), pages 1-22, May.

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