Device and method for controlling a belt-type continuously variable transmission for a vehicle

A control device for a vehicle belt type continuously variable transmission of a vehicle which comprises a primary pulley and a secondary pulley around which a belt is wound so as to generate a belt clamping force according to an input torque from a driving source by controlling a secondary hydraulic pressure, the control device comprising:

• a belt slip controller configured to perform a belt slip control, the belt slip control comprising oscillating the secondary hydraulic pressure and extracting an oscillation component due to oscillation from a basic component of an actual secondary hydraulic pressure when a change speed of the input torque is less than a predetermined value so as to control the secondary hydraulic pressure based on a phase difference between an oscillation component of an actual gear ratio and the oscillation component due to oscillation of the actual secondary hydraulic pressure;
• a limit determining control unit configured to determine whether to limit acceleration of the vehicle;
• and
• an input torque change speed limiter control unit configured to limit the change speed of the input torque to less than the predetermined value when the limit determining control unit makes a determination to limit the acceleration of the vehicle,
• wherein the belt slip controller is configured to permit the belt slip control while the input torque change speed limiter control unit is limiting the change speed of the input torque to less than the predetermined value.