Title: Road profile estimation in heavy vehicle dynamics simulation

Authors: H. Imine, L. Fridman

Addresses: LCPC: Laboratoire Central des Ponts et Chaussees, 58, bld Lefebvre, 75732 Paris Cedex 15, France. ' Department of Control, Edificio Bernardo Quintana, Segundo piso, University of Mexico, DF, Mexico

Abstract: In this paper, a new method is developed in order to estimate the road profile inputs of heavy vehicle. These inputs are very important to evaluate on-board the vertical forces acting on the wheels. The proposed method is based on the use of second and third order sliding mode observers to estimate all the vehicle states (positions, speeds and accelerations) in finite time. Simulations results are given to compare the two observers and to show the robustness of the proposed method.

Keywords: road profile; loads; sliding mode observers; estimation; heavy vehicles; vehicle dynamics; simulation; vehicle design; vertical forces; vehicle position; vehicle speed; vehicle acceleration.

DOI: 10.1504/IJVD.2008.020889

International Journal of Vehicle Design, 2008 Vol.47 No.1/2/3/4, pp.234 - 249

Available online: 22 Oct 2008 *

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