Abstract: A trailer mode determination device and method using a gradient is provided that a trailer mode determination method includes: calculating longitudinal acceleration-based gradient of a vehicle and determining whether a calculated value is valid; calculating clutch torque-based gradient and determining whether the calculated value is valid; determining whether the longitudinal acceleration-based gradient is greater than or equal to a predetermined reference gradient; determining whether vehicle speed and vehicle speed change amount are greater than or equal to predetermined values; calculating a difference between the longitudinal acceleration-based gradient (d1) and the clutch torque-based gradient (d2) when the vehicle speed and vehicle speed change amount are greater than or equal to a predetermined value; determining whether gradient difference (d1?d2) exceeds a predetermined normal range; and determining a trailer is mounted and a trailer mode is switch on when the gradient difference (d1?d2) exceeds the

Abstract: A trailer mode determination device and method using a gradient is provided that a trailer mode determination method includes: calculating longitudinal acceleration-based gradient of a vehicle and determining whether a calculated value is valid; calculating clutch torque-based gradient and determining whether the calculated value is valid; determining whether the longitudinal acceleration-based gradient is greater than or equal to a predetermined reference gradient; determining whether vehicle speed and vehicle speed change amount are greater than or equal to predetermined values; calculating a difference between the longitudinal acceleration-based gradient (d1) and the clutch torque-based gradient (d2) when the vehicle speed and vehicle speed change amount are greater than or equal to a predetermined value; determining whether gradient difference (d1?d2) exceeds a predetermined normal range; and determining a trailer is mounted and a trailer mode is switch on when the gradient difference (d1?d2) exceeds the

Abstract: A method for learning a touch point of a clutch may include a step of outputting a first control signal for controlling a touch point learning mode to be entered if a preset condition is satisfied, a step of calculating a reference value by dividing a difference value between rotational speed of a drive shaft clutch and rotational speed of a non-drive shaft clutch by a difference value between rotational speed of an engine and the rotational speed of the drive shaft clutch, a step of outputting a second control signal for moving the non-drive shaft clutch toward the engine if the reference value is less than a preset threshold value and a step of determining a position of the non-drive shaft clutch at a time when the reference value reaches the preset threshold value to be the touch point.

Abstract: A T-S curve correction method for a clutch system may include: detecting differences between actual positions of a clutch in first and second torque regions and a position on a T-S curve; determining whether the difference between the actual position in the first torque region and the position on the T-S curve is equal to or more than a first reference value; determining whether the difference between the actual position in the second torque region and the position on the T-S curve is equal to or less than a third reference value, when the difference of the actual position in the first torque region is equal to or more than the first reference value; and correcting the slope of the T-S curve in the increasing direction, when the difference of the actual position in the second torque region is equal to or less than the third reference value.

Abstract: Provided are a method and an apparatus for learning a touch point of a clutch. The method of learning the touch point of the clutch comprises a step of outputting a first control signal for controlling a touch point learning mode to be entered if a preset condition is satisfied, a step of calculating a reference value by dividing a difference value between driving speed of a drive shaft clutch and driving speed of a non-drive shaft clutch by a difference value between driving speed of an engine and the driving speed of the drive shaft clutch, a step of outputting a second control signal for moving the non-drive shaft clutch toward the engine if the reference value is less than a preset threshold value and a step of determining a position of the non-drive shaft clutch at a time when the reference value reaches the preset threshold value to be the touch point.

Abstract: A T-S curve correction method for a clutch system may include: detecting differences between actual positions of a clutch in first and second torque regions and a position on a T-S curve; determining whether the difference between the actual position in the first torque region and the position on the T-S curve is equal to or more than a first reference value; determining whether the difference between the actual position in the second torque region and the position on the T-S curve is equal to or less than a third reference value, when the difference of the actual position in the first torque region is equal to or more than the first reference value; and correcting the slope of the T-S curve in the increasing direction, when the difference of the actual position in the second torque region is equal to or less than the third reference value.

Abstract: A position offset compensation method of a clutch for controlling power that is transmitted from an engine to a wheel of a vehicle in accordance with one of exemplary embodiments of the present invention may include confirming whether an additional torque is transferred to the clutch, if a torque that is transferred to the clutch is larger than a predetermined torque, confirming whether a speed of the clutch is less than a predetermined speed for a predetermined time according to the confirming result, confirming whether the clutch is moved to an open direction according to the confirming result, and controlling the clutch position, by calculating a compensation value of the clutch position according to the confirming result.

Abstract: A position offset compensation method of a clutch for controlling power that is transmitted from an engine to a wheel of a vehicle in accordance with one of exemplary embodiments of the present invention may include confirming whether an additional torque is transferred to the clutch, if a torque that is transferred to the clutch is larger than a predetermined torque, confirming whether a speed of the clutch is less than a predetermined speed for a predetermined time according to the confirming result, confirming whether the clutch is moved to an open direction according to the confirming result, and controlling the clutch position, by calculating a compensation value of the clutch position according to the confirming result.