Title: Determination of tyre-ground interaction parameters through image processing in Matlab

Authors: Petru Roşca; Marius-Ionuţ Mărmureanu; Tudor-Viorel Ţigănescu; Cătălin-Mihai Pîrvulescu; Irina-Maria Bîndac; Călin Doru

Addresses: Center for Test – Evaluation and Scientific Research for Armament, Military Equipment and Technologies Research Agency (METRA), Clinceni, 077060, Ilfov, Romania ' Center for Test – Evaluation and Scientific Research for Armament, Military Equipment and Technologies Research Agency (METRA), Clinceni, 077060, Ilfov, Romania ' Center for Test – Evaluation and Scientific Research for Armament, Military Equipment and Technologies Research Agency (METRA), Clinceni, 077060, Ilfov, Romania ' Faculty of Industrial Engineering and Robotics, University Politehnica of Bucharest, Bucharest, 060042, Romania ' Faculty of Industrial Engineering and Robotics, University Politehnica of Bucharest, Bucharest, 060042, Romania ' Military Equipment and Technologies Research Agency (METRA), Clinceni, 077060, Ilfov, Romania

Abstract: One representative parameter of the tyre-ground interaction is the wheel ground pressure - the ratio between wheel load and contact patch area. Unless the weight of a vehicle and its distribution on wheels can be easily measured, the contact patch area quantification requires either sophisticated and expensive devices or the compromise of obtaining inaccurate results by using more or less adequate predictive formulas. This paper presents an efficient method, through image processing in Matlab, which can be used in order to accurately determine the contact area, the mobility area, the maximum contact length, and the maximum contact width. It also proposes new prediction equations for the contact area and for the mobility area based on experimental data related to Continental 14.00 R20 tyre type. The applicability on the tyre-ground interaction should be seen as a particular case for the image processing method, its helpfulness being noted in many other areas.

Keywords: tyre; ground; pressure; vehicle; patch; area; contact; test; image; Matlab.

DOI: 10.1504/IJHVS.2021.120913

International Journal of Heavy Vehicle Systems, 2021 Vol.28 No.5, pp.630 - 649

Received: 06 Jan 2020
Accepted: 31 Mar 2020
Published online: 17 Feb 2022 *

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