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VEHICLE STEERING SYSTEM AND METHOD OF CONTROLLING THE SAME

  • US 20090312909A1
  • Filed: 09/27/2007
  • Published: 12/17/2009
  • Est. Priority Date: 09/29/2006
  • Status: Active Grant
First Claim
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1. A vehicle steering system comprising:

  • a steering wheel, operated by a driver, for steering a vehicle;

    a reaction force actuator for adjusting reaction force provided against an operation of the steering wheel;

    an actual steering actuator for steering a steered wheel; and

    a controller that adjusts magnitude of the reaction force by driving the reaction force actuator in accordance with an operation of the steering wheel, and that controls steering of the steered wheel by driving the actual steering actuator,wherein the controller includes;

    a familiarity degree-determining section for determining a degree of driver'"'"'s familiarity with steering characteristics that reflect relations between a certain operation of the steering wheel and both of a reaction force characteristic and an actual steering characteristic of the steered wheel in response to the certain operation of the steering wheel;

    a steering characteristic-changing section for changing the steering characteristics in accordance with the determined degree of driver'"'"'s familiarity; and

    an actuator operation-controlling section for controlling operation of the reaction force actuator and the actual steering actuator based on the steering characteristics changed by the steering characteristic-changing section.

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