Patent ID: 8560187

Claim:
A controller for controlling a continuously variable transmission including a variator with a primary pulley at an input side for changing a groove width by a hydraulic pressure, a secondary pulley at an output side for changing a groove width by a hydraulic pressure and a power transmission member mounted between the primary pulley and the secondary pulley, and a torque converter arranged between a drive source and the variator, comprising: a rotational speed detecting unit configured to detect the rotational speed of a rotor located closer to drive wheels than the torque converter; a rotational speed change amount calculating unit configured to calculate a change amount in the rotational speed per unit time; a limit setting unit configured to set a higher absolute value of a limiter for the change amount as a rotational speed difference between an input shaft and an output shaft of the torque converter increases; a final change amount setting unit configured to set the smaller one of the absolute value of the change amount and that of the limiter as a final change amount; and a hydraulic control unit configured to control a hydraulic pressure to be supplied to the variator based on the final change amount.