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Method of estimating vehicle weight by determining vertical oscillation frequency

  • US 20060293815A1
  • Filed: 06/28/2005
  • Published: 12/28/2006
  • Est. Priority Date: 06/28/2005
  • Status: Active Grant
First Claim
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1. A method of determining the sprung weight of at least a portion of a vehicle, comprising:

  • providing an electronic control module mounted on a vehicle, the vehicle having a suspension system on at least a portion thereof comprising one or more springs, wherein the one or more springs have an essentially constant spring rate;

    estimating a vertical oscillation frequency of at least a portion of the vehicle with at least one pre-existing accelerometer mounted within the electronic control module; and

    analyzing the vertical oscillation frequency estimate and the essentially constant spring rate of the one or more springs of the suspension of the vehicle in the electronic control module to estimate a sprung weight of at least a portion of the vehicle.

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