Title: A simplified tyre classification method for indirect tyre pressure monitoring systems using experimental modal analysis

Authors: Fabiano Icisaca Indicatti; Marcelo Augusto Leal Alves; Leandro Piersanti

Addresses: Department of Mechanical Engineering, Polytechnic School of the University of São Paulo, São Paulo, 05508-010, Brazil ' Department of Mechanical Engineering, Polytechnic School of the University of São Paulo, São Paulo, 05508-010, Brazil ' IAV do Brasil Ltda – Automotive Engineering, São Paulo, 04795-904, Brazil

Abstract: Tyre pressure has been shown to have a considerable impact on emissions, tyre lifetime, and vehicle driveability. The indirect Tyre Pressure Monitoring System (iTPMS) is a maintenance-free and more cost-efficient alternative for direct measuring systems (dTPMS) that ensures vehicle driving with correct tyre pressure. However, the application of iTPMS in new vehicle platforms requires a longer process and higher engineering effort. This paper presents a new simplified approach using experimental modal analysis to improve the efficiency of iTPMS application process by classifying tyres regarding their frequency response. The developed approach allows the evaluation of the tyre sensitivity at an early stage with a relatively straightforward test setup. Tyre excitation is performed with an impact hammer, and a single piezoelectric accelerometer records the vibrational response. Six different tyres were tested to validate the potential advantages of the modal analysis and its correlation with driving test measurements.

Keywords: iTPMS; indirect tyre pressure monitoring system; tyre sensitivity; tyre vibrational behaviour; first torsional mode; modal analysis.

DOI: 10.1504/IJVSMT.2022.129139

International Journal of Vehicle Systems Modelling and Testing, 2022 Vol.16 No.3, pp.229 - 239

Received: 12 Jul 2022
Accepted: 02 Aug 2022
Published online: 22 Feb 2023 *

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