CONTROL DEVICE OF AUTOMATIC TRANSMISSION FOR VEHICLE

PROBLEM TO BE SOLVED: To provide a control device of the automatic transmission for vehicles capable of appropriately setting gear change operations during turning. SOLUTION: A vehicle comprises a longitudinal acceleration detection means for detecting the longitudinal acceleration of a vehicle, and a lateral acceleration detection means for detecting the acceleration in the width direction of a vehicle. The control device of the automatic transmission comprises an estimated lateral acceleration calculation means for calculating the estimated lateral acceleration from a handle steering angle and a vehicle speed, and a lateral acceleration deviation calculation means for calculating a lateral acceleration deviation that is a difference between an estimated lateral acceleration value and a lateral acceleration value. Provided is a gear change prohibition region correction means for correcting depending on a lateral acceleration deviation a determination value for determining whether an acceleration state consisting of a longitudinal acceleration value and a lateral acceleration value is a state in which gear change is prohibited. Thereby, a region in which upshift is prohibited is corrected, whereby the automatic transmission is controlled using the corrected gear change prohibition region. COPYRIGHT: (C)2011,JPO&INPIT