Pressing load setting method of tire testing machine
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United States of America Patent
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Jan 30, 2018
Issued Date -
N/A
app pub date -
Dec 8, 2015
filing date -
Feb 26, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A tire and a drum are relatively moved so that a pressing load is increased, and stopped when the pressing load becomes a predetermined value lower than a target value. A value of the pressing load and a relative distance between the tire and the drum are measured at timings when a circumferential position of the tire is the same. A dynamic longitudinal spring constant of the tire is calculated by using change amounts of the pressing load and the relative distance. An adjustment amount serving as a distance by which the tire and the drum are relatively moved so that a value of the pressing load when relative movement is stopped becomes the target value is calculated by using the dynamic longitudinal spring constant and a difference between the arrival value and the target value. The tire and the drum are relatively moved by the adjustment amount.
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