Interrelated power delivery controls – including engine control – Clutch control – Condition responsive control
Patent
1994-02-22
1995-08-08
Pitts, Andrea L.
Interrelated power delivery controls, including engine control
Clutch control
Condition responsive control
477 86, 192103R, 3644241, B60K 4102, B60K 4128
Patent
active
054394287
ABSTRACT:
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 PID function and a differential engine speed function, which together adaptively adjust clutch engagement corresponding to vehicle loading. The automatic clutch controller includes a PID regulator responsive to the difference of engine speed and transmission input speed, 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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Eaton Corporation
Pitts Andrea L.
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