Compression control device for continuously variable transmission
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United States of America Patent
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May 21, 2019
Grant Date -
Oct 26, 2017
app pub date -
Jul 14, 2015
filing date -
Oct 15, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A compression control device for a continuously variable transmission is provided in which the compression control device that controls the compression of either one of shaft elements of the continuously variable transmission calculates a slip state matrix from an amplitude ratio between a variable component of a rotational speed of the input shaft and a variable component of a rotational speed of the output shaft, a phase lag that is an indicator of difference in phase between a variable component of the rotational speed of the input shaft and a variable component of the rotational speed of the output shaft, and a gear ratio between the input shaft and the output shaft, estimates a power transmission state among the input shaft element, the output shaft element, and the power transmission element based on an eigenvalue sequence calculated from the slip state matrix, and controls compression.
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