×

Steering wheel angle determination

  • US 6,775,604 B2
  • Filed: 12/11/2002
  • Issued: 08/10/2004
  • Est. Priority Date: 12/11/2002
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method for determining a steering wheel angle value of a vehicle'"'"'s steering mechanism, comprising the steps of:

  • supplying power to a controller after ignition-off to save the steering wheel angle value stored in the controllers'"'"' volatile memory;

    retrieving the steering wheel angle value stored in the controller'"'"'s volatile memory at ignition-on;

    determining a first vehicle parameter;

    determining a second vehicle parameter;

    offset compensating the first vehicle parameter;

    offset compensating the second vehicle parameter;

    determining a probable steering wheel angle value using a Find Center Algorithm relying on the offset compensated first vehicle parameter and the offset compensated second vehicle parameter as input;

    determining the difference between the stored steering wheel angle value and the calculated probable steering wheel angle value;

    determining whether the difference between the stored steering wheel angle value and the calculated probable steering wheel angle value falls within a predetermined range; and

    continuing to use the steering wheel angle value that was stored in the controller'"'"'s volatile memory if the difference between the stored steering wheel angle value and the calculated probable steering wheel angle value falls within the predetermined range.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×