Method for learning touch point of transmission

A method for learning a touch point of a transmission, comprising:

• a first calculating step of moving, by a controller, a sleeve of a synchronizing device in a shift stage gear direction and calculating a predicted rotation speed based on an initial rotation speed and a rotation speed change rate of a transmission clutch;
• a step of positioning, by the controller, a first point which is a sleeve position at a point in time when a difference between an actual rotation speed and the predicted rotation speed of the transmission clutch starts to occur and a second point which is a sleeve position at a point in time when a difference value between the actual rotation speed and the predicted rotation speed reaches a set speed, after the first calculating step;
• a second calculating step of calculating, by the controller, a determination time which is a value obtained by subtracting a second time taken to move the sleeve from the first point to the second point from a first time taken to move the sleeve from the first point to a pre-stored touch point, after the positioning step;
• and
• a correcting step of performing, by the controller, a correction and control on the touch point based on the determination time, after the second calculating step.