A Tire-Soil Interaction Representation for Agile Tire Slippage Characterization and Detection

Project began September 2019.

A drawback of modern ground vehicle electronic control systems such as traction control systems (TCS), torque vectoring systems, etc. is that they possess a control response time within 100 to 120 milliseconds and greater. This means that the actual control of a spinning wheel occurs after the wheel is losing or has lost the grip with terrain and the vehicle can be very likely immobilized.

Recently launched agile tire dynamics challenges existing vehicle control systems in terms of their response time to dynamic changes of road and terrain conditions for providing an effective real-time actuation, i.e., for ensuring sustainable terrain mobility. The approach is to reduce the response time of control systems to the tire longitudinal relaxation time constant and, thus, to establish the time boundaries for controlling the drive wheel within the interval of 40 to 60 milliseconds.

The proposed work belongs to the area of sensoring and detecting dynamic changes in the tire-soil interaction. The ultimate goal of this project is to study the longitudinal dynamic behavior of the tire itself when a wheel moves on deformable terrains. In particular, the project would concentrate on studying a tire contribution to the tire-soil traction characteristic and to the slippage that is the effect of the tire-soil longitudinal deflections/compressions and relative longitudinal movements between the tire and soil.

Prior Work and References:

• Gray, J. P., Vantsevich, V. V., & Paldan, J., 2016. Agile tire slippage dynamics for radical enhancement of vehicle mobility. Journal of Terramechanics, 65, 14-37 .
• Vantsevich V. V., Agile Dynamics Fundamentals for Tire Slippage Modeling and Control. ASME DETC2014-34464, August 17-20, Buffalo, NY, 2014 .
• V. V. Vantsevich, L. Demkiv, S. Klos, Analysis of Tire Relaxation Constants for Modeling Vehicle Traction Performance and Handling, ASME 2018 Dynamic Systems and Control Conference .
• V. V. Vantsevich, L. Demkiv, S. Klos, S. Misko, L. Moradi, An Experimental study of Longitudinal Tire Relaxation Constants for Vehicle Traction Dynamics Modeling, ASME 2019 Dynamic Systems and Control Conference (submitted).