Abstract: A hybrid electric vehicle control apparatus increases a speed of an engine in view of a speed of a drive motor when starting the engine, and turns on an engine clutch after identifying a self-operation of the engine, based on a disturbance torque, thereby rapidly synchronizing the engine speed and the drive motor speed and preventing waste of fuel, which in turn improves fuel efficiency.

Abstract: A hybrid electric vehicle control apparatus increases a speed of an engine in view of a speed of a drive motor when starting the engine, and turns on an engine clutch after identifying a self-operation of the engine, based on a disturbance torque, thereby rapidly synchronizing the engine speed and the drive motor speed and preventing waste of fuel, which in turn improves fuel efficiency.

Abstract: An anti-jerk control system and method of an eco-friendly vehicle are provided to prevent a driver from sensing a difference in vehicle starting at an initial stage when the vehicle is parked on a downhill road. The anti-jerk control method uses a motor as a driving source and includes calculating an actual speed of the motor, calculating a model speed of the motor, and acquiring a gradient of a road, on which the vehicle is located, using a gradient detector. Additionally, the method includes determining a speed offset value that corresponds to the acquired gradient, compensating the model speed by the speed offset value, and calculating a motor vibration component using a difference between the compensated model speed and the actual speed of the motor. Then, anti-jerk compensation torque is calculated using the calculated motor vibration component.

Abstract: An anti jerk control system and method of an eco-friendly vehicle are provided to prevent a driver from sensing a difference in vehicle starting at an initial stage when the vehicle is parked on a downhill road. The anti-jerk control method uses a motor as a driving source and includes calculating an actual speed of the motor, calculating a model speed of the motor, and acquiring a gradient of a road, on which the vehicle is located, using a gradient detector. Additionally, the method includes determining a speed offset value that corresponds to the acquired gradient, compensating the model speed by the speed offset value, and calculating a motor vibration component using a difference between the compensated model speed and the actual speed of the motor. Then, anti-jerk compensation torque is calculated using the calculated motor vibration component.

Abstract: A method and system for controlling anti-jerk in order to reduce vibration of a vehicle is provided. More specifically, a rotation speed (?m) of a driving source device of the vehicle is received and a speed (?lwh, ?rwh) of a left wheel and a right wheel connected to the driving source device is detected by a sensor respectively. Then, a controller, which receives this data, calculates an average speed (?fwh) based on the detected left and right wheel speeds, produces a virtual speed through interpolation of the detected left and right wheel speeds and the average speed based on a predetermined sampling value, and calculates a model speed (?ref) based on the detected left and right wheel speeds, the average speed, the virtual speed, and a final gear ratio (?j; where j is the number of the gear) considering a final reduction gear ratio (FGR) and a current gear of the vehicle.

Abstract: A method and system for controlling anti-jerk in order to reduce vibration of a vehicle is provided. More specifically, a rotation speed (?m) of a driving source device of the vehicle is received and a speed (?lwh, ?rwh) of a left wheel and a right wheel connected to the driving source device is detected by a sensor respectively. Then, a controller, which receives this data, calculates an average speed (?fwh) based on the detected left and right wheel speeds, produces a virtual speed through interpolation of the detected left and right wheel speeds and the average speed based on a predetermined sampling value, and calculates a model speed (?ref) based on the detected left and right wheel speeds, the average speed, the virtual speed, and a final gear ratio (?j; where j is the number of the gear) considering a final reduction gear ratio (FGR) and a current gear of the vehicle.