Apparatus for controlling vehicle automatic transmission accordi

Details Apparatus for controlling vehicle automatic transmission accordi Apparatus for controlling vehicle automatic transmission accordi

1990-08-10

1992-06-23

Lall, Parshotam S.

Boots, shoes, and leggings

74866, B60K 4108

Patent

active

051249162

ABSTRACT:
An apparatus for controlling a vehicle automatic transmission having a plurality of operating positions, including a determining device for determining satisfaction degress of at least one basic fuzzy set theory rule corresponding to the respective operating positions of the transmission, based on a predetermined shift pattern, a first calculating device for calculating satisfaction degrees of fuzzy set control rules, corresponding to the respective operating positions of the transmission, depending upon a detected vehicle running condition, a second calculating device for calculating overall satisfaction degrees for selecting the respective operating positions, based on the calculated satisfaction degress of the basic fuzzy set theory rule or rules and the calculated satisfaction degrees of the fuzzy set control rules, and a selector for selecting one of the positions of the transmission, based on the calculated overall satisfaction degrees, so that the automatic transmission is shifted to the selected position.

REFERENCES:
patent: 4841815 (1989-06-01), Takahashi
patent: 4842342 (1989-06-01), Takahashi et al.
patent: 4947331 (1990-08-01), Speranza
patent: 4958288 (1990-09-01), Takahashi
patent: 4975845 (1990-12-01), Mehta
patent: 5019979 (1991-05-01), Takahashi

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