Method and apparatus for slip mode control of automatic clutch

Details Method and apparatus for slip mode control of automatic clutch Method and apparatus for slip mode control of automatic clutch

1996-02-02

1997-05-20

Marmor, Charles A.

Interrelated power delivery controls, including engine control

Clutch control

Condition responsive control

477175, 477180, B60K 4102

Patent

active

056307730

ABSTRACT:
An automatic clutch controller for a vehicle that reduces the oscillatory response to clutch engagement. The automatic clutch controller receives inputs from a throttle position sensor, 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 develops a slip reference signal as a function of throttle position and engine speed and compares it to actual slip. The controller includes a PID regulator responsive to the difference of slip and slip reference, a prefilter operating on the resulting PID signal, and a compensator constructed to reduce the need for detailed particularization for individual vehicles or vehicle models by reducing the system closed loop sensitivity to vehicle parameter variations.

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patent: 5439428 (1995-08-01), Slicker
patent: 5484354 (1996-01-01), Vukovich et al.
patent: 5499954 (1996-03-01), Wagner et al.
patent: 5569117 (1996-10-01), Kono et al.

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