Motor torque control apparatus for hybrid vehicle, motor torque control method of the same, and hybrid vehicle including the same

A motor torque control method of a motor torque control apparatus for a hybrid vehicle, where the motor torque control apparatus comprises a calculator configured to calculate a model speed of a motor, a control model speed, an anti-jerk torque, and an anti-jerk torque control factor, and a controller configured to control the calculator, the motor torque control method comprising:

• determining, by the controller, whether lift-foot-up (LFU) shifting is to be performed;
• upon determining that the LFU shifting is to be performed, determining, by the controller, whether a motor speed is higher than the model speed;
• upon determining that the motor speed is higher than the model speed, controlling, by the controller, the motor speed using the anti-jerk torque;
• controlling, by the controller, the calculator to calculate a maximum difference value between the model speed and the motor speed and a reduction in the motor speed;
• determining, by the controller, whether the motor speed is abnormal based on the maximum difference value between the model speed and the motor speed and the reduction in the motor speed;
• upon determining that the motor speed is abnormal, controlling, by the controller, the calculator to calculate the control model speed and the anti-jerk torque control factor;
• correcting, by the controller, the anti-jerk torque based on the control model speed and the anti-jerk torque control factor;
• and
• controlling, by the controller, the motor speed using the corrected anti-jerk torque.

A hybrid vehicle comprising:

• a hybrid power source comprising a motor and an engine;
• and
• a motor torque control apparatus configured to control a motor torque of the hybrid power source,
• wherein, at a time of lift-foot-up (LFU) shifting, the motor torque control apparatus controls a motor speed using an anti-jerk torque, determines whether the motor speed controlled using the anti-jerk torque is abnormal based on a maximum difference value between the motor speed and a model speed and a reduction in the motor speed, corrects the anti-jerk torque based on a control model speed and an anti-jerk torque control factor upon determining that the motor speed is abnormal, and controls the motor speed using the corrected anti-jerk torque.