Fuzzy logic adaptive shift control

Details Fuzzy logic adaptive shift control Fuzzy logic adaptive shift control

1996-04-03

1998-04-07

Nguyen, Tan Q.

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Transmission control

701 57, 701 58, 701 61, 477155, 477156, 477158, G06F 1700, B60K 4106

Patent

active

057377120

ABSTRACT:
A method of establishing an adaptive pressure term in an automatic transmission having a pressure command developed from a base line pressure term and an adaptive pressure term extends implementation of adaptive pressure corrections during non-ideal periods of operation such as low temperatures, short operating cycles and driver variations by establishing an adaptive pressure term proportional to a measure of confidence in a pressure correction term calculated at each ratio change of the transmission. The measure of confidence is determined according to a variety of functions of predetermined powertrain operating parameters and measures of criticality.

REFERENCES:
patent: 5086665 (1992-02-01), Milunas et al.
patent: 5163342 (1992-11-01), Pollack et al.
patent: 5251509 (1993-10-01), Pollack et al.
patent: 5434779 (1995-07-01), Vukovich et al.

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