Patent ID: 7797081
Filing Date: 2010-09-14
Classification: B60W,F16H

Abstract:
1. A method of controlling a variator having an actuator responsive to one or more actuator pressure signals, the variator including one or more pressure sensors for detecting one or more respective internal hydraulic circuit pressures representing an internal pressure differential, the method comprising: receiving an indication of a commanded internal variator pressure differential; sensing an actual internal variator pressure differential and determining a pressure discrepancy between the commanded internal variator pressure differential and the actual internal variator pressure differential; extracting a first corrective control signal based on a predetermined association of multiple pressure values to multiple respective control values, whereby the predetermined association relates the pressure discrepancy to the first corrective control signal; sensing an acceleration and transforming the first corrective control signal as a function of the acceleration to yield a second corrective control signal; and providing the second corrective control signal to the variator to control the operation of the variator.