Patent ID: 8032282
Filing Date: 2011-10-04
Classification: B60G

Abstract:
1. A damping characteristics control apparatus for a vehicle suspension having a shock absorber mounted between a sprung member and an unsprung member for each wheel of a vehicle, comprising: sprung velocity detection means for detecting a velocity of said sprung member in a moving direction of said shock absorber; unsprung velocity detection means for detecting a velocity of said unsprung member in a moving direction of said shock absorber; relative displacement detection means for detecting a relative displacement between said sprung member and said unsprung member; damping coefficient calculation means for calculating a damping coefficient provided for an equation of motion of said sprung member following said unsprung member, said damping coefficient being obtained by the following equation; wherein “C(absorber)” is the damping coefficient, “z′” is the sprung velocity, “y′” is the unsprung velocity, “|y−z|” is the relative displacement, “T” is interval time of the sprung member moving relative to the unsprung member, which is used as a parameter for weighting the motion of the sprung member, “L” is a displacement of the sprung member stopped against the unsprung member, “Gain” is a control gain, and “p” is a parameter for determining an effective range for a control about a neutral position of said shock absorber; and damping control means for controlling a damping force of said shock absorber on the basis of the damping coefficient calculated by said damping coefficient calculation means.