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Device for measuring longitudinal acceleration of vehicle immune to static and dynamic errors

  • US 6,254,204 B1
  • Filed: 07/15/1999
  • Issued: 07/03/2001
  • Est. Priority Date: 08/07/1998
  • Status: Expired due to Term
First Claim
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1. A device for measuring longitudinal acceleration of a vehicle having wheels, comprising:

  • first means for detecting wheel speed of at least one of the wheels to generate a first signal indicating the wheel speed;

    second means for detecting the longitudinal acceleration of the vehicle to generate a second signal indicating the longitudinal acceleration;

    third means for differentiating the first signal by time to generate a third signal indicating change rate of the wheel speed;

    fourth means for filtering the second signal to remove low frequency components thereof therefrom to generate a fourth signal;

    fifth means for filtering the third signal to remove high frequency components thereof therefrom to generate a fifth signal; and

    sixth means for combining the fourth and fifth signals together to generate a sixth signal indicating a final value for the longitudinal acceleration of the vehicle.

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