A method for predicting dynamic behavioral characteristics of a vehicle using screw theory

摘要

A vehicle model is developed for a quasi-static analysis. The quasi-static analysis is performed for the vehicle model under a cornering condition in which a specific lateral force acts. A finite screw axis is determined based on a rigid body displacement of the vehicle model with respect to the ground through the quasi-static analysis. A fixed screw axis surface formed by a migration of the finite screw axis is also determined. The gradients of screw parameters with respect to lateral forces when the vehicle model behaves in an initial cornering state are calculated. Roll behavior is then estimated based on the fixed screw axis surface and gradients of screw parameters.