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Steer-by-wire steering system with road feel

  • US 6,973,989 B2
  • Filed: 03/30/2001
  • Issued: 12/13/2005
  • Est. Priority Date: 04/03/2000
  • Status: Expired due to Fees
First Claim
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1. A steering apparatus for a vehicle having steerable road-engaging wheels, said apparatus comprising:

  • a rotatable vehicle steering wheel;

    a sensor for sensing the rotational position of said steering wheel and for generating a first signal corresponding to the sensed rotational position of said steering wheel;

    a first electric motor for resisting rotation of said steering wheel;

    a second electric motor controlled by said first signal;

    a steering gear that is actuated by said second electric motor to turn the steerable wheels of the vehicle; and

    an electrical circuit that includes said first and second motors in series.

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