Control apparatus of automatic transmission

摘要

A control apparatus for a vehicle includes an automatic transmission configured to attain a predetermined shift-stage by releasing an engaged friction-engagement element and by engaging a released friction-engagement element; a variation-start detecting section configured to detect that a parameter which varies with a progress of inertia phase has varied; a memorizing section configured to sequentially memorize a state of the vehicle; and a learning section configured to correct a control quantity for a next-time shift of the transmission on the basis of the state of vehicle memorized at a timing earlier by a given time interval than a timing when the variation-start detecting section detects that the parameter has varied.

主权项

1. A control apparatus for a vehicle, comprising:
an automatic transmission configured to attain a predetermined shift-stage by releasing an engaged friction-engagement element and by engaging a released friction-engagement element; a variation-start detecting section configured to detect that a parameter which varies with a progress of an inertia phase has started to vary in accordance with a variation rate of a turbine rotational speed; a memorizing section configured to sequentially memorize a slip amount until the variation-start detecting section detects that the parameter has started to vary; and a learning section configured to:
correct a control quantity for a next-time shift of the automatic transmission, based on the slip amount memorized at a start timing of the inertia phase, andrecognize the start timing of the inertia phase as being at a time that is earlier by a given time interval than a time when the variation-start detecting section detects that the parameter has started to vary.