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Electric power steering control system and method for controlling the electric power steering control system

  • US 20020026270A1
  • Filed: 08/20/2001
  • Published: 02/28/2002
  • Est. Priority Date: 08/30/2000
  • Status: Active Grant
First Claim
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1. An electric power steering control system comprising:

  • a motor for applying an assisting torque to a steering wheel used for manipulating running wheels of a vehicle;

    steering torque detecting means for detecting a torque applied to said steering wheel by a driver of said vehicle as a steering torque;

    motor angle detecting means for detecting a rotating angle of said motor;

    road surface reaction torque estimating means for estimating a road surface reaction torque of said running wheels using said steering torque;

    and neutral point learning means for learning a neutral point of the steering wheel under the actual driving condition from said estimated road surface reaction torque and the rotating angle of said motor.

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