×

MODIFIED STATIC TIRE MODEL FOR PROVIDING ASSIST WITHOUT A TORQUE SENSOR FOR ZERO TO LOW VEHICLE SPEEDS

  • US 20160288825A1
  • Filed: 06/14/2016
  • Published: 10/06/2016
  • Est. Priority Date: 09/15/2014
  • Status: Active Grant
First Claim
Patent Images

1. A method of controlling an electric power steering system, the method comprising:

  • determining a steering rack force to apply a torque to the electric power steering system, wherein determining the steering rack force comprises generating a friction factor based on a motor velocity of a motor of the electric power steering system, the friction factor indicative of a friction between a tire and a surface of a ground with which the tire is in contact;

    generating a steering assist torque command based on the steering rack force; and

    controlling the electric power steering system using the steering assist torque command.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×