Digital image correlation techniques for measuring tyre-road interface parameters: Part 2-Longitudinal tyre slip ratio measurement

作者：Botha Theunis R^*; Els P Schalk

来源：Journal of Terramechanics, 2015, 61: 101-112.

DOI：10.1016/j.jterra.2015.05.003

• Longitudinal slip
• Digital image correlation
• Camera
• Longitudinal tyre force
• Contact patch velocity

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.

• 出版日期2015-10