×

Steering angle determaination method and apparatus

  • US 5,948,030 A
  • Filed: 07/25/1997
  • Issued: 09/07/1999
  • Est. Priority Date: 07/25/1997
  • Status: Expired due to Fees
First Claim
Patent Images

1. In a vehicle with a hand wheel, steerable wheels positionally responsive to the hand wheel and a steering position sensor coupled to the handwheel and providing a handwheel angle signal indicative of an angular position of the handwheel, a steering angle determination method comprising the steps of:

  • first filtering the handwheel angle signal to provide a first filter output;

    defining a comparison window around the first filter output;

    comparing the handwheel angle signal to the comparison window;

    when the handwheel angle signal is within the comparison window, second filtering the handwheel angle signal to provide a second filter output;

    when the handwheel angle signal is not within the comparison window, maintaining the second filter output fixed; and

    determining a steer angle signal as a difference between the handwheel angle signal and the second filter output, wherein offsets between the handwheel angle signal and steered positions of the steerable wheels are compensated for.

View all claims
  • 9 Assignments
Timeline View
Assignment View
    ×
    ×