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Steering angle detecting device

  • US 5,119,302 A
  • Filed: 06/28/1990
  • Issued: 06/02/1992
  • Est. Priority Date: 06/28/1989
  • Status: Expired due to Term
First Claim
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1. A steering angle detecting device for a steering apparatus having a component which is displaceable depending on a change in a steering angle, comprising:

  • an analog sensor for detecting a displacement of the component and producing an analog signal having a potential corresponding to the position of the component;

    a digital sensor for detecting the displacement of the component and producing a predetermined number of pulses corresponding to a unit change in the steering angle;

    basic count determining means for determining a basic count corresponding to the steering angle based on the analog signal produced by said analog sensor when said steering angle starts to be detected;

    counting means for generating and holding a count corresponding to the steering angle by adding or subtracting the numer of pulses produced by said digital sensor to or from said basic count;

    steering angle calculating means for calculating said steering angle based on said count; and

    correcting means for correcting said count when the component is positioned in a position corresponding to a predetermined reference steering angle.

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