Method for controlling continuously variable transmission

A CVT control method comprising the steps of:

• calculating a target speed ratio of a CVT that lies between maximum and minimum values of a plurality of speed ratios preset corresponding to a plurality of engine operation modes, said calculating a target speed ratio comprising,
• calculating a driving pattern index on the basis of throttle opening change rate, throttle operation frequency, and vehicle acceleration, and
• calculating the target ratio on the basis of the driving pattern index;
• and
• controlling the CVT according to the target speed ratio.