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System for dynamically determining axle loadings of a moving vehicle using integrated sensing system and its application in vehicle dynamics controls

  • US 8,005,592 B2
  • Filed: 09/03/2009
  • Issued: 08/23/2011
  • Est. Priority Date: 11/09/2005
  • Status: Active Grant
First Claim
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1. A method of controlling a vehicle having a sprung mass, a spring rate, a wheel assembly mass, a suspension, a body and a suspension point where the suspension couples to the body, a half track, a center of gravity, a longitudinal distance between the center of gravity and an axle, a vertical distance between the center of gravity and a suspension point, said method comprising:

  • determining a relative pitch angle;

    determining a relative roll angle;

    determining a vertical acceleration using the vertical distance between the center of gravity and the suspension point;

    determining a heave motion wheel loading in response to the sprung mass and the vertical acceleration;

    determining an attitude based wheel loading in response to the spring rate and the half track and the longitudinal distance between the center of gravity and the axle;

    determining a vertical motion induced wheel loading in response to the wheel assembly mass and the vertical acceleration;

    determining a total wheel normal loading in response to the heave motion wheel loading, the attitude based wheel loading and the vertical motion induced wheel loading; and

    controlling a vehicle system in response to the total wheel normal loading.

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