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Electric-vehicle testing device and method

  • US 10,386,269 B2
  • Filed: 03/10/2017
  • Issued: 08/20/2019
  • Est. Priority Date: 10/31/2014
  • Status: Active Grant
First Claim
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1. An electric-vehicle testing apparatus comprising:

  • processing circuitry configured to;

    generate a first signal corresponding to accelerator operation amount by a driver and a second signal corresponding to brake operation amount by the driver in accordance with test conditions that include a target vehicle speed pattern indicating a variation in target vehicle speed along a time series;

    control torque of a test motor included in a test object based on a first command value corresponding to the first signal;

    compute running resistance to be assumed when a vehicle runs using a rotation speed of the test motor;

    compute braking force using the second signal and an actual vehicle speed obtained from the rotation speed of the test motor; and

    control torque of a load motor coupled to the test motor, based on a second command value corresponding to the running resistance and the braking force,wherein the processing circuitry determines, as the braking force, a smaller one of a first braking force candidate corresponding to the second signal and a sum of a second braking force candidate corresponding to the actual vehicle speed and a first command value corresponding to creep torque of the vehicle.

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