Closed-loop control of an infinitely variable transmission
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United States of America Patent
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Jun 27, 2023
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N/A
app pub date -
Mar 2, 2022
filing date -
Apr 16, 2020
priority date (Note) -
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Abstract
A nonlinear closed-loop control combined with an integral time-delay feedback control is disclosed to adjust a speed ratio of an infinitely variable transmission (IVT) system. A speed ratio control for an IVT system involves a forward speed controller and a crank length controller for different speed ranges. The time-delay control is designed to reduce speed fluctuations of the output speed of an IVT with an accurate speed ratio. The speed ratio of an IVT with the disclosed control strategy can achieve an excellent tracking response for the desired constant output speed and reduce speed fluctuations of the output speed of an IVT by the time-delay feedback control.
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