Method of controlling a gear ratio of a transmission
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United States of America Patent
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Apr 18, 2017
Grant Date -
Mar 16, 2017
app pub date -
Sep 16, 2015
filing date -
Sep 16, 2015
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Abstract
A method of controlling a transmission includes detecting a first inflection point and a second inflection point in the movement of the accelerator pedal. An amplitude between the first inflection point and the second inflection point is then calculated, and a period of time between the first inflection point and the second inflection point is measured. An attenuation coefficient is defined from the amplitude and the measured period of time between the first and second inflection points. A current iteration temporary gear ratio is defined as the gear ratio calculated during the most recent iteration of an iterative gear ratio selection algorithm, and is adjusted with the defined attenuation coefficient to define a current iteration final output gear ratio. The operation of the transmission is then controlled to change the transmission from a previous iteration final output gear ratio to the current iteration final output gear ratio.
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