F - Mech Eng,Light,Heat,Weapons – 16 – D
Patent
F - Mech Eng,Light,Heat,Weapons
16
D
F16D 43/00 (2006.01) F16D 48/06 (2006.01)
Patent
CA 2137295
An automatic clutch controller for a vehicle that reduces the oscillatory response to clutch engagement. The automatic clutch controller receives inputs from an engine speed sensor and a transmission input speed sensor and develops a clutch actuation signal controlling a clutch actuator from disengaged to fully engaged. The clutch engagement signal at least partially engages the friction clutch in a manner to cause the measured transmission input speed to asymptotically approach engine speed employing,an approximate inverse model of this oscillatory response. The automatic clutch controller preferably includes a slip integral function and a differential engine speed function, which together adaptively adjust clutch engagement corresponding to vehicle loading. The automatic clutch controller includes a prefilter and a compensator constructed to reduce the need for detailed particularization for individual vehicles or vehicle models. A lag compensation function in the compensator adds robustness to the system by increasing low frequency gain. A freeze function suspends operation of the slip integral , the prefilter and the compensator during engine deceleration or when throttle position is high and engine speed is low, to moderate or stop clutch advance to prevent engine overloading.
Borden Ladner Gervais Llp
Corporation Eaton
LandOfFree
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