Patent ID: 6298293
Filing Date: 2001-10-02
Classification: B60G

Abstract:
A kinetic state quantity estimating device for use with a vehicle having a damper that generates a damping force corresponding to an orifice opening degree of a damper orifice, the kinetic state quantity estimating device estimating a vertical kinetic state quantity of a sprung member relative to an unsprung member, and comprising:an absolute kinetic state quantity detector that detects a vertical kinetic state quantity of the sprung member relative to absolute space;an observer that estimates the vertical kinetic state quantity of the sprung member relative to the unsprung member based upon the vertical kinetic state quantity detected by the absolute kinetic state quantity detector and a non-linear component of the damping force of the damper determined by the orifice opening degree as a control input; anda first compensator that determines a spring force of a stabilizer based on an amount of relative displacement of the sprung member relative to the unsprung member, and compensates for the control input of the observer based upon the determined spring force.