Control system and method for continuously variable transmission with variator speed ratio closed-loop feedback
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United States of America Patent
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Feb 27, 2018
Grant Date -
Mar 13, 2014
app pub date -
Sep 12, 2012
filing date -
Sep 12, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A system and method of controlling a continuously variable transmission with variator speed ratio (VSR) closed-loop feedback is provided. The method includes determining a desired VSR based on at least one of the driver and vehicle inputs, determining a motor position adjustment needed to adjust the position of a roller to achieve the desired VSR, driving the motor based on the determined motor position adjustment needed, sensing a transmission output speed as the motor is being driven, determining an actual VSR as the motor is being driven, and providing closed-loop feedback corresponding to any difference between the actual VSR and the desired VSR and driving the motor to eliminate the difference, thereby achieving the desired VSR.
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International Classification(s)
- B60K:ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF ....
- B60W:CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT....
- G05B:CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTION....
- G06F:ELECTRIC DIGITAL DATA PROCESSING
- F15B:SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUI....
- F02B:INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENG....
- F16H:GEARING
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