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VIBRATION-INHIBITION CONTROL APPARATUS FOR ELECTRICALLY DRIVEN VEHICLE, AND VIBRATION-INHIBITION CONTROL METHOD FOR ELECTRICALLY DRIVEN VEHICLE

  • US 20130184918A1
  • Filed: 07/21/2011
  • Published: 07/18/2013
  • Est. Priority Date: 07/23/2010
  • Status: Active Grant
First Claim
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1. A vibration suppression system for an electrically driven vehicle having an electrically driven motor as a power source, comprising:

  • a rotation speed detector configured to detect a motor rotation speed;

    a motor torque target calculation unit configured to calculate a motor torque target value in response to a driver request;

    a first torque target calculation unit configured to calculate a first torque target by feedforward (F/F) operation using a model transfer characteristic between a torque input and the motor rotation speed with respect to the motor torque target value;

    a second torque target calculation unit configured to calculate a second torque target by feedback (F/B) operation using the model transfer characteristic between the torque input and the motor rotation speed with respect to the motor rotation speed);

    a motor torque command setting mechanism configured to add the first torque target and the second torque target to obtain a motor torque command to the motor;

    a determination mechanism configured to determine whether or not the model transfer characteristic between the torque input and motor rotation speed matches an actual transfer characteristic; and

    a vibration suppression mechanism configured to set the motor torque target value as the motor torque command during a time period in which the transfer characteristic between the torque input and motor rotation speed is not determined to match the actual transfer characteristic, while stopping the F/F operation of the first torque target using the first torque target calculation unit and the F/B operation of the second torque target using the second torque target calculation mechanism.

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