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System and method for controlling a vehicle

  • US 10,640,113 B2
  • Filed: 10/30/2017
  • Issued: 05/05/2020
  • Est. Priority Date: 08/20/2013
  • Status: Active Grant
First Claim
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1. A vehicle control system comprising:

  • a controller configured to determine an upper non-zero limit on deceleration of a vehicle, the controller configured to determine the upper non-zero limit to prevent rollback of the vehicle down a grade being traveled up on by the vehicle, the upper non-zero limit on deceleration determined by the controller based on a payload carried by the vehicle, a speed of the vehicle, and a grade of a route being traveled upon by the vehicle,wherein the controller is configured to monitor the deceleration of the vehicle, the controller configured to automatically prevent the deceleration of the vehicle from exceeding the upper non-zero limit by applying a direct current to an alternating current motor of the vehicle, andwherein the controller configured to supply the direct current to the motor of the vehicle to prevent rollback of the vehicle while the vehicle is moving up the grade at a non-zero speed.

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