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Steer-by-wire system

  • US 6,363,305 B1
  • Filed: 09/18/2000
  • Issued: 03/26/2002
  • Est. Priority Date: 09/17/1999
  • Status: Expired due to Fees
First Claim
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1. A steer-by-wire control system comprising:

  • a master control unit;

    at least one roadwheel unit electrically connected to said master control unit;

    at least one steering wheel unit electrically connected to said master control unit;

    a vehicle speed sensor for producing a vehicle speed signal, said vehicle speed sensor electrically connected to said master control unit;

    wherein said at least one roadwheel unit includes a roadwheel position sensor and a least one tie rod sensor to produce and transmit a tie rod force signal;

    wherein said at least one steering wheel unit includes a steering wheel position sensor to produce and transmit a steering wheel position signal;

    wherein said master control unit calculates at least one roadwheel command signal in response to said tie rod force signal and said steering wheel position signal;

    wherein said master control unit including a torque unit to calculate and produce a reaction torque signal in response to said tie-rod force signal and said vehicle speed signal; and

    wherein said torque unit uses said tie rod force signal as an index to a plurality of torque look-up tables and blending the outputs thereof to generate a blended value.

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