Method and apparatus for slip mode control of automatic clutch
US5630773A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1996 |
| Grant date | May 20, 1997 |
| Priority date | — |
| Expiry date | Feb 2, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H63/46
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.