Patent ID: 9512889
Filing Date: 2016-12-06
CPC Classification: F16D

Claim Text:
1. A method for controlling a transmission clutch during a clutch event, comprising: (a) defining a transfer function relating clutch torque to a control signal under transmission operating conditions; (b) determining a target clutch torque for current operating conditions; (c) using the control signal of the transfer function and the current operating conditions to produce torque at the clutch; (d) correcting clutch torque by adjusting the control signal based on a difference between the target clutch torque and the actual torque at the clutch; (e) calculating actual clutch torque with reference to transmission input torque and transmission output torque; (f) computing a clutch torque error as a difference between the calculated actual clutch torque and the target clutch torque; (g) repetitively adjusting the transfer function based on the clutch torque error.