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Steering control system for vehicle

  • US 5,267,160 A
  • Filed: 04/30/1991
  • Issued: 11/30/1993
  • Est. Priority Date: 05/02/1990
  • Status: Expired due to Fees
First Claim
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1. A steering control system for a wheeled vehicle, comprising:

  • a steering means for steering said wheeled vehicle in response to a control signal representing a control steering input;

    a sensing means for sensing an actual vehicle motion variable of said vehicle; and

    a controlling means for determining an estimated vehicle motion variable corresponding to said control steering input by using a predetermined estimator transfer characteristic which is a transfer characteristic relating a vehicle steering response to a steering input, producing a deviation signal representing a deviation of said actual vehicle motion variable from said estimated vehicle motion variable, and further producing said control signal in accordance with said deviation signal so as to reduce said deviation by using a predetermined compensator transfer characteristic which is a transfer characteristic relating the steering input to the vehicle steering response, and a predetermined filter transfer characteristic, said compensator transfer characteristic being in the form of a fraction where the denominator of said fraction comprises said estimator transfer characteristic.

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