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A Traction Enhanced On-Demand All Wheel Drive Control System for a Hybrid Electric Vehicle
Technical Paper
2007-01-0299
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper presents a novel design of a control law optimizing the performance of an on-demand all wheel drive (ODAWD) vehicle with hybrid powertrain for traction enhancement via slip regulation in a driving event. Based on a reasonably simplified vehicle model (bicycle model) and optimization of a performance index based on wheel slip, a closed loop actuator control law is derived. The proposed optimal controller tries to minimize the wheel slip error by activating and dynamically controlling the electric motor drive torque to the non-driven wheel pair (e.g. rear wheels), in order to enhance vehicle longitudinal traction. Simulation of the proposed controller was performed on a validated 14 degree-of-freedom detailed vehicle model in SIMULINK. The simulation results show that the proposed control algorithm provides reasonable acceleration slip regulation in a vehicle traction maneuver on low friction coefficient surfaces when compared with that without the traction-enhanced controller presented in this paper.
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Lin, Y. and Anwar, S., "A Traction Enhanced On-Demand All Wheel Drive Control System for a Hybrid Electric Vehicle," SAE Technical Paper 2007-01-0299, 2007, https://doi.org/10.4271/2007-01-0299.Also In
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