Patent ID: 9523426
Filing Date: 2016-12-20
CPC Classification: F16H

Claim Text:
1. A gear change control device comprising: a control level calculation device that calculates a feedback control level for making an actual gear ratio between input rotational speed and output rotational speed of a transmission coincide with a target gear ratio, wherein the control level calculation device calculates the feedback control level for making a deviation of acceleration of change in the actual gear ratio with respect to acceleration of change in the target gear ratio converge to zero, wherein the transmission is a toroidal type continuously variable transmission that comprises an input disk, an output disk, a pair of power rollers held between the input disk and the output disk, a pair of trunnions supporting the pair of power rollers, and a pair of hydraulic actuators connected to the pair of trunnions, and that changes gear ratio by driving the pair of trunnions by means of the pair of hydraulic actuators in directions opposite to each other and swinging the pair of power rollers around a trunnion axis so as to change the positions of points of contact with the input disk and the output disk.