Control method for electric vehicle and control device for electric vehicle

A control device for an electric vehicle, comprising:

• a motor controller programmed to:
• control a torque of a motor based on a final torque command value by calculating the final torque command value such that a vibration damping control to reduce vibrations of a driving force transmission system of a vehicle is performed on a target torque command value set based on vehicle information;
• calculate the final torque command value based on the target torque command value and a value obtained by multiplying a drive-shaft torsional angular velocity by a feedback gain, and
• estimate a dead-zone period during which a motor torque output from the motor is not transmitted to a drive-shaft torque of the vehicle, by use of a vehicle model that models the driving force transmission system, and
• determine whether or not the vehicle is just before stop of the vehicle,
• wherein different values as the feedback gain are set separately for the dead-zone period and for a period during which the motor torque is transmitted to the drive-shaft torque of the vehicle, and
• wherein, when motor controller determines that the vehicle is just before the stop of the vehicle, the motor controller sets the same value as the values of the feedback gain for the dead-zone period and for the period during which the motor torque is transmitted to the drive-shaft torque of the vehicle.