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US 2004/0163454 A1Published application
Road surface friction coefficient estimating method, signal multiplex transmission method and signal multiplex transmission device
AssigneeBridgestone Corporation
InventorsShuhei Tsuchie, Yoshinori Imamura, Koji Takao, Masanobu Toyofuku
Life of this patent
Estimating the term…
Abstract
A method for directly and accurately estimating friction coefficient of a road surface independently from the slip rate is disclosed. The method measures tangential and vertical forces acting on an elastic body 3 of an elastic wheel 1, and calculates the friction coefficient of a road surface based on the measured values of these forces and angular rate of the wheel 1.
Claims8
A method for estimating friction coefficient of a road surface, comprising
- measuring, in a tire/wheel assembly having an axle hub, a tire, and a wheel attached to the axial hub to support the tire, tangential and vertical components of a force acting between a section of a power transmission path between the axle hub and the tire and the other section of the transmission path, said sections of the transmission path being bounded by an elastic body arranged within the transmission path;
- and
- calculating the friction coefficient between the tire/wheel assembly and the road surface based on the measured values of the each component of the force.
Dependencies are inferred from the claim text.