Transmission control with a fuzzy logic controller

Abstract

A control for a motor vehicle transmission automatically shifts transmission gears as a function of at least a driving pedal position and vehicle speed on the basis of shifting performance graphs stored in memory, and takes a load state of the motor vehicle and the driving style of the driver into account. A fuzzy logic controller with a rule base evaluates various signals characterizing driving states of the motor vehicle, and thereupon generates the following control signals: a first correcting signal characterizing the load state of the motor vehicle, and a second correcting signal characterizing the driving style, bringing about a switchover to corresponding shifting performance graphs; and an inhibit signal preventing shifting events that would produce a dynamically unfavorable driving state.

Dependencies are inferred from the claim text.