Method of controlling dual clutch transmission and system thereof

A system of controlling a dual clutch transmission, the system comprising:

• a dual clutch module including a driveshaft clutch selectively connecting an engine to a driveshaft, a non-driveshaft clutch selectively connecting the engine to a non-driveshaft, a driveshaft clutch actuator, a non-driveshaft clutch actuator, a gear of a non-driveshaft connected to the non-driveshaft clutch by the non-driveshaft, and a gear of the driveshaft connected to the driveshaft clutch by the driveshaft;
• an input shaft rotation speed sensor configured to measure a rotation speed of the driveshaft and a rotation speed of the non-driveshaft;
• a clutch pressure sensor configured to measure a pressure applied to the driveshaft clutch and a pressure applied to the non-driveshaft clutch;
• and
• a control unit including a processor and a memory,
• wherein the control unit is configured to:
• release a pressure of the non-driveshaft clutch and engage the gear of the non-driveshaft;
• apply a first pressure to the non-driveshaft clutch and disengage the gear of the non-driveshaft;
• determine a drag torque on a basis of a first rotation speed change rate of the non-driveshaft based on the rotation speed of the non-driveshaft detected by the input shaft rotation speed sensor;
• release the first pressure and engage the gear of the non-driveshaft;
• apply a second pressure to the non-driveshaft clutch and disengage the gear of the non-driveshaft;
• determine a touch point torque on a basis of a second rotation speed change rate of the non-driveshaft based on the rotation speed of the non-driveshaft detected by the input shaft rotation speed sensor;
• and
• adjust a touch point of the non-driveshaft clutch on a basis of a net torque which is a difference between the touch point torque and the drag torque.