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VEHICLE STEERING SYSTEM

  • US 20070288143A1
  • Filed: 06/08/2007
  • Published: 12/13/2007
  • Est. Priority Date: 06/13/2006
  • Status: Active Grant
First Claim
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1. A vehicle steering system comprising:

  • a steering actuator that imparts a steering force to a steering mechanism of a vehicle;

    an automatic steering controller that performs an automatic steering control by controlling the steering actuator based on a target steering angle;

    a steering-without-driving determination unit that determines whether or not a steering-without-driving in which the steering mechanism performs a steering operation in such a state that the vehicle is being stopped occurs during the automatic steering control by the automatic steering controller;

    a threshold value setting unit that sets a threshold value for canceling the automatic steering control by the automatic steering controller, the threshold value being set so that the automatic steering control is made more difficult to be cancelled at the time the steering-without-driving determination unit determines that the steering-without-driving occurs as compared with at the time the steering-without-driving determination unit determines that the steering-without-driving does not occur; and

    an automatic steering cancellation unit that cancels the automatic steering control by the automatic steering control unit based on the threshold value set by the threshold value setting unit.

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