Title: Traction and braking of hybrid electric vehicles using control allocation

Authors: Leo Laine, Jonas Fredriksson

Addresses: Department of Applied Mechanics, Chalmers University of Technology, SE-412 96 Goteborg, Sweden. ' Department of Signals and Systems, Chalmers University of Technology, SE-412 96 Goteborg, Sweden

Abstract: This paper considers how a reusable motion control system can be designed to handle Hybrid Electric Vehicle (HEV) systems. The design considers simultaneously energy management and vehicle stability control, by distributing the task among available actuators. The suggested control system includes a control law for longitudinal, lateral, and yaw motion and a control distributor which distributes the desired control signals on the available actuators. The distribution among available actuators is designed by using constrained control allocation with mixed optimisation formulation, which gives a smooth blending among the available actuators. Simulations confirm that the proposed motion control system not only works as a traction, braking, and steering controller, it also works well as a vehicle stability controller.

Keywords: HEV traction; HEV braking; HEVs; hybrid electric vehicles; control allocation; reusable motion control; energy management; vehicle stability control; steering control; traction control; braking control; vehicle design.

DOI: 10.1504/IJVD.2008.022580

International Journal of Vehicle Design, 2008 Vol.48 No.3/4, pp.271 - 298

Published online: 16 Jan 2009 *

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