System and method for controlling engine clutch

A system for controlling an engine clutch, comprising:

• a motor;
• a power-converter for converting rotational force of the motor into rectilinear force;
• a master cylinder for generating controlled hydraulic pressure for driving an engine clutch through forward and backward movement of a piston thereof using the rectilinear force transmitted from the power-converter;
• a first travel sensor mounted to the master cylinder and configured to detect a position of the piston of the master cylinder;
• a slave cylinder for driving the engine clutch through forward and backward movement of a piston thereof using the hydraulic pressure transmitted from the master cylinder;
• a second travel sensor mounted to the slave cylinder and configured to detect a position of the piston of the slave cylinder;
• and
• a controller configured to control hydraulic pressure transmitted to the slave cylinder by outputting a motor control command for controlling the engine clutch so as to switch the engine clutch to a target state and to additionally perform compensation control with respect to the motor based on the positions of the pistons detected by the first travel sensor and the second travel sensor,
• wherein the controller compares a position of the piston of the slave cylinder, detected by the second travel sensor, with a first reference position for performing control so that the engine clutch is in a target state, determines a compensation value corresponding to a difference between the detected position of the piston of the slave cylinder and the first reference position, and performs compensation control with respect to the motor in proportion to the determined compensation value, wherein the compensation value reflects a degree of variation in a volume of a working fluid,
• wherein the controller compares a position of the piston of the master cylinder, detected by the first travel sensor, with a second reference position for performing control so that the engine clutch is in a target state, and
• if there is no difference between the detected position of the piston of the master cylinder and the second reference position, the controller determines the compensation value and performs the compensation control with respect to the motor.