Clutch or brake engagement pressure compensation

Details Clutch or brake engagement pressure compensation Clutch or brake engagement pressure compensation

1995-09-27

1997-10-28

Pitts, Andrea L.

192 clutches and power-stop control

Clutches

Torque responsive

192 85R, 477180, F16D 4320

Patent

active

056809174

ABSTRACT:
An apparatus for controlling a clutch or brake in an application with variable torque requirements. Control logic momentarily sets the control signal to an initial level to allow adequate time to engage the clutch or brake, and then changes the control signal at an acceptable rate until reaching the required torque level. The initial level is varied based upon the required torque, such that at low levels of required torque, a signal with low initial torque (although possibly higher than the required torque), is used to achieve smoother engagement at some sacrifice in response, and at higher levels of required torque, a signal with higher initial torque is used to improve response.

REFERENCES:
patent: 4577737 (1986-03-01), Niikura et al.
patent: 4699239 (1987-10-01), Ishino et al.
patent: 4702358 (1987-10-01), Mueller et al.
patent: 4711333 (1987-12-01), Okamura
patent: 4720003 (1988-01-01), Murasugi
patent: 4781265 (1988-11-01), Weiler et al.
patent: 4881627 (1989-11-01), Ishii
patent: 4969545 (1990-11-01), Hayashi
patent: 5002170 (1991-03-01), Parsons et al.
patent: 5092435 (1992-03-01), Sone et al.
patent: 5325933 (1994-07-01), Matsushita

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