Patent attributes
A method and an apparatus for estimating uneven wear in the tire shoulder with high accuracy using a fewer number of sensors are provided. An uneven tire wear estimating apparatus includes an acceleration sensor (11) disposed on an inner surface of a tire tread for measuring radial acceleration, an acceleration waveform extracting means (12) for extracting an acceleration waveform in a post-trailing-end domain from output signals of the acceleration sensor, means for calculating a vibration level α of an uneven wear measured band and a vibration level β of a reference band from the extracted acceleration waveform, an uneven wear determination index calculating means (16) for calculating an uneven wear determination index γ, which is an index for determining au uneven wear, from the vibration level α and the vibration level β, and a determining means (18) for determining whether an uneven wear is occurring in an edge of the tire shoulder from the value of the uneven wear determination index γ.
