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Tire suspension fusion system for estimation of tire deflection and tire load

  • US 9,874,496 B2
  • Filed: 03/12/2013
  • Issued: 01/23/2018
  • Est. Priority Date: 03/12/2013
  • Status: Active Grant
First Claim
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1. A tire load estimation system for a vehicle comprising:

  • at least one tire mounted to a wheel hub and supporting a vehicle chassis;

    at least one tire static load sensor mounted to the at least one tire for detecting a measured static tire load;

    a tire static load estimator for calculating an estimated tire static load on the at least one tire based on the measured static tire load;

    at least one vehicle chassis-mounted sensor for measuring a vehicle chassis vertical deflection;

    a tire deflection estimator for determining a tire vertical deflection estimate from the estimated tire static load and the vehicle chassis vertical deflection;

    a load variation estimator for determining a load variation estimate from the tire vertical deflection estimate; and

    a tire load estimator operative to determine a substantially instantaneous load on the at least one tire based on the estimated tire static load and the load variation estimate.

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