Closed loop launch and creep control for automatic clutch with robust algorithm

Abstract From the Canadian patent

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 between from disengaged to fully engaged. The clutch actuator at least partially engages the friction clutch in a manner to cause the measured transmission input speed to asymptotically approach a reference speed employing an approximate inverse model of this oscillatory response. In a launch mode corresponding to normal start of the, vehicle the reference speed is the measured engine speed. In a creep mode …