Digital image correlation techniques for measuring tyre-road interface parameters : Part 2 - Longitudinal tyre slip ratio measurement
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Date
Authors
Botha, Theunis R.
Els, Pieter Schalk
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Abstract
Measurement of tyre longitudinal slip-ratio is often estimated from three independent measurements devices namely wheel rotation
speed, vehicle speed and tyre rolling radius. This produces an expensive measurement system to indirectly determine the slip-ratio. This
paper presents a method by which the slip-ratio is determined from a video camera using digital image correlation techniques. The
camera, mounted in such a way that the contact patch region is captured, enables the system to measure the tyre tread speed and ground
speed at the contact patch. The slip-ratio is then determined from these two measurements.
Description
Keywords
Longitudinal slip, Digital image correlation, Camera, Longitudinal tyre force, Contact patch velocity
Sustainable Development Goals
Citation
Botha, TR & Els, PS 2015, 'Digital image correlation techniques for measuring tyre-road interface parameters : part 2 - longitudinal tyre slip ratio measurement', Journal of Terramechanics, vol. 61, pp. 101-112.