Method and apparatus for robust automatic clutch control with pid regulation
US5439428A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 22, 1994 |
| Grant date | Aug 8, 1995 |
| Priority date | — |
| Expiry date | Feb 22, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2500/70668
- 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 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.