14th IFAC Symposium on System Identification, SYSID 2006

SYSID-2006 Paper Abstract


Paper FrB6.5

Savaresi, Sergio (Pol. di Milano), Tanelli, Mara (Pol. di Milano), Langthaler, Peter (Johannes Kepler Univ.), Del Re, Luigi (Johannes Kepler Univ.)

Identification of Tire-Road Contact Forces by “in-Tire” Accelerometers

Scheduled for presentation during the Regular Session "Identification in Automotive Systems" (FrB6), Friday, March 31, 2006, 16:50−17:10, Newcastle Room

14th IFAC Symposium on System Identification, March 29 - 31, 2006, Newcastle, Australia

This information is tentative and subject to change. Compiled on July 16, 2018

Keywords Other, Filtering and Smoothing, Mechanical and Aerospace


The interaction between tire and road is crucial for determining the vehicle’s dynamic behavior. In particular, during motion, the vertical load exerted at the tire-road contact point is a key variable in designing active control systems both for traction and braking. In this work, we propose an innovative method for estimating road-tire contact forces based on the measurement of both standard vehicle sensors – i.e., wheel encoders – and of a high-performance accelerometer mounted directly in the tire. The in-tire accelerometer signal is acquired via a radio-based telemetry system, connected to a standard dSpace based acquisition system. We will show how to derive from these measurements an estimate of the instantaneous vertical load and of the tire contact patch length. The work is based on experimental data, collected by an instrumented car.