METHOD FOR ESTIMATING UNEVEN WEAR OF TIRE, AND DEVICE FOR ESTIMATING UNEVEN WEAR OF TIRE

Title:

METHOD FOR ESTIMATING UNEVEN WEAR OF TIRE, AND DEVICE FOR ESTIMATING UNEVEN WEAR OF TIRE

Document Type and Number:

WIPO Patent Application WO/2015/079741

Kind Code:

A1

Abstract:

The purpose of the present invention is to provide a method and a device for estimating, with high accuracy, uneven wear of a shoulder section, using few sensors. This device (10) for estimating uneven wear of a tire is configured from: an acceleration sensor (11) which is provided to an inner surface of a tire tread, and which measures acceleration of the tire in a radial direction; an acceleration-waveform extraction means (12) which extracts, from an output signal of the acceleration sensor, the acceleration waveform of a post-kick-out region; a means which calculates, from the extracted acceleration waveform, a vibration level (α) in an uneven-wear-measuring band and a vibration level (β) in a reference band; an uneven-wear-determination index calculation means (16) which calculates, from the vibration levels (α, β), an uneven-wear-determination index (γ), i.e. an index used to perform uneven-wear determination; and a determination means (18) which determines, from the size of the uneven-wear-determination index (γ), whether an edge of the shoulder section of the tire has uneven wear.

Inventors:

MASAGO TAKESHI (JP)

Application Number:

PCT/JP2014/070177

Publication Date:

June 04, 2015

Filing Date:

July 31, 2014

Export Citation:

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Assignee:

BRIDGESTONE CORP (JP)

International Classes:

G01M17/02; B60C19/00

Domestic Patent References:

WO2009008502A1	2009-01-15
WO2009157516A1	2009-12-30
WO2009008319A1	2009-01-15
WO2013175871A1	2013-11-28

Foreign References:

JP2007153034A	2007-06-21
JP2009018667A	2009-01-29
JP2013169816A	2013-09-02
JP2009019950A	2009-01-29
JP2013136297A	2013-07-11
JP2013136297A	2013-07-11

Other References: