Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Clutch control
Reexamination Certificate
2008-03-25
2008-03-25
Beaulieu, Yonel (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Clutch control
C701S051000, C477S034000, C477S039000, C477S070000, C477S090000
Reexamination Certificate
active
10813898
ABSTRACT:
A method is provided for controlling engagement of a clutch which carries torque before, during and after a shifting event in a transmission which is connected to a throttle-controlled engine. The method includes providing a feed forward input command which increases as the engine torque increases and decreases as the engine torque decreases. A feed-back input command is provided as a function of the error between measured clutch slip and a reference slip profile. The feed-forward input command and feed-back input command are summed to provide a clutch control command for controlling engagement of the clutch before, during and after the shifting event to allow a desired amount of clutch slip to damp excitation of the transmission.
REFERENCES:
patent: 4928227 (1990-05-01), Burba et al.
patent: 6110068 (2000-08-01), Kraska
patent: 6299565 (2001-10-01), Jain et al.
patent: 6695108 (2004-02-01), Hanke et al.
patent: 7044888 (2006-05-01), Lee et al.
Carlson Richard W.
Hebbale Kumaraswamy V.
Kao Chi-Kuan
Lee Chunhao J.
Samie Farzad
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