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Method for predicting dynamic behavior characteristics of a vehicle using screw theory

  • US 20040006410A1
  • Filed: 05/19/2003
  • Published: 01/08/2004
  • Est. Priority Date: 07/08/2002
  • Status: Active Grant
First Claim
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1. A method for predicting dynamic behavior characteristics of a vehicle, comprising:

  • developing a vehicle model for a quasi-static analysis;

    performing the quasi-static analysis for the vehicle model under a cornering condition in which a specific lateral force acts;

    determining a finite screw axis based on a rigid body displacement of the vehicle model with respect to the ground through the quasi-static analysis;

    determining a fixed screw axis surface formed by a migration of the finite screw axis;

    calculating gradients of screw parameters with respect to the lateral force when the vehicle model behaves in an initial cornering state; and

    estimating roll behavior based on the fixed screw axis surface and gradients of screw parameters.

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