Method for estimating the wear of a tire
First Claim
1. A method for estimating the wear of a tire, comprising:
- detecting a time-series waveform of radial acceleration of the tire by using an acceleration sensor mounted in a tire inner liner portion of the tire;
measuring index of a deformation speed in a radial direction at or near a contact edge of a tire tread from the detected time-series waveform of the radial acceleration;
standardizing the index of the deformation speed on information on a rotation time of the tire or information on the rotational speed of the tire; and
estimating a degree of tire wear from the magnitude of the standardized index of deformation speed.
1 Assignment
0 Petitions
Accused Products
Abstract
The degree of wear of a tire is estimated with constant accuracy. An acceleration sensor (11) is installed on the inner surface in the inner liner region of a tire to detect the acceleration of the tread in the radial direction of the tire. The peak level on the leading edge side or the trailing edge side of the tread appearing in the differentiated waveform of the detected acceleration is calculated and used as an index V of deformation speed of the tread. The degree of wear of the tire is estimated on the basis of the calculated index V of deformation speed and an M-V map (16B) showing a predetermined relationship between the degree M of tire wear and the index V of deformation speed.
28 Citations
20 Claims
-
1. A method for estimating the wear of a tire, comprising:
-
detecting a time-series waveform of radial acceleration of the tire by using an acceleration sensor mounted in a tire inner liner portion of the tire; measuring index of a deformation speed in a radial direction at or near a contact edge of a tire tread from the detected time-series waveform of the radial acceleration; standardizing the index of the deformation speed on information on a rotation time of the tire or information on the rotational speed of the tire; and estimating a degree of tire wear from the magnitude of the standardized index of deformation speed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification