Control device and control method for electric motor vehicle

A control device for an electric motor vehicle, comprising

• a drive motor that generates a drive torque to be transmitted to drive wheels;
• and
• a power supply source including at least a generator having an electric motor and providing power to the drive motor, the control device comprising:
• a required drive torque calculation means for calculating a required drive torque based upon a traveling state of the vehicle;
• a power supply value calculation means for calculating a power supply value indicating power to be supplied to the drive motor from the power supply source;
• and
• a power supply command means for
• performing damping processing for both of the required drive torque and the power generated by the generator to compensate for a delay time of the power supply source,
• controlling the power supply source so as to supply to the drive motor power resulting from the damping processing so as to reduce a frequency component in the power generated by the generator, the frequency component being equivalent to a torsional vibration of a drive system of the vehicle,
• calculating a drive torque to be indicated in a command to the drive motor based upon an output of the generator,
• controlling the drive motor based upon the drive torque, and
• controlling the power generated by the generator to be substantially equivalent to a target generation power value representing target power to be generated and supplied to the drive motor.

A control method for an electric motor vehicle comprising a drive motor that generates a drive torque to be transmitted to drive wheels and a power supply source including at least a generator having an electric motor and providing power to the drive motor, the control method comprising:

• calculating a required drive torque based upon a traveling state of the vehicle,
• calculating a power supply value indicating power to be supplied to the drive motor from the power supply source,
• performing damping processing for both of the required drive torque and the power generated by the generator to compensate for a delay time of the power supply source,
• controlling the power supply source so as to supply to the drive motor power resulting from the damping processing so as to reduce a frequency component in the power generated by the generator, the frequency component being equivalent to a torsional vibration of a drive system of the vehicle,
• calculating a drive torque to be indicated in a command to the drive motor based upon an output of the generator,
• controlling the drive motor based upon the drive torque, and
• controlling the power generated by the generator to be substantially equivalent to a target generation power value representing target power to be generated and supplied to the drive motor.