Apparatus and method for identifying tires and apparatus and method for evaluating road surface conditions
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United States of America Patent
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Aug 5, 2003
Grant Date -
Aug 22, 2002
app pub date -
Dec 10, 2001
filing date -
Dec 14, 2000
priority date (Note) -
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Abstract
An apparatus for identifying tires comprising: a rotational speed detecting means; a first calculating means for calculating a vehicle speed; a second calculating means for calculating acceleration/deceleration of the vehicle; a third calculating means for calculating a slip ratio; a fourth calculating means for respectively obtaining moving averages of the acceleration/deceleration and the slip ratios of the vehicle; a fifth calculating means for obtaining linear regression coefficients and correlation coefficients of the moving-averaged acceleration/deceleration of the vehicle and the slip ratio; a sixth calculating means for calculating a tire identifying coefficient; and a tire identifying means for identifying tires which is presently mounted based on the tire identifying coefficient. Differences in tread rigidities of the tires can be automatically reflected for controlling the vehicle.
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