Clutch control method for vehicle

A transmission comprising:

• a first input shaft selectively connectable to an engine by a first clutch;
• a second input shaft selectively connectable to the engine by a second clutch;
• a plurality of gears mounted on the first input shaft and the second input shaft;
• a clutch actuator engaged to the first and second clutches and configured of controlling the first and second clutches;
• a gear actuator engaged to the plurality of gears and configured of changing a gear engagement between the plurality of gears for gear shifting;
• and
• a controller connected to the clutch actuator and the gear actuator and including a processor and a non-transitory storage medium on which a program is recorded, the program executed by the processor and configured of performing:
• determining whether a tip-in has occurred during an in-gear state of the transmission;
• increasing clutch slip of at least one of the first and second clutches to a first target slip;
• feedback-controlling so that the clutch slip is reduced toward a second target slip during a predetermined first control time period after the increasing of the clutch slip;
• controlling the at least one of the first and second clutches of the transmission via the clutch actuator with a first target slip angular acceleration after the predetermined first control time period has elapsed;
• feedback-controlling so that a target slip angular acceleration of the at least one of the first and second clutches becomes zero at an end of a predetermined second control time period after the predetermined first control time period;
• and
• feedback-controlling so that the clutch slip becomes a third target slip after the predetermined second control time period has elapsed.