| 摘要 |
PROBLEM TO BE SOLVED: To provide a shock absorber system capable of effectively damping vibration of a spring upper part.SOLUTION: In a system capable of changing the damping force of a hydraulic shock absorber, as an index for changing the damping force, necessary sprung acting force, which is the force to be acted on a spring upper part for damping the vertical motion of the spring upper part, is used. The necessary sprung acting force is determined on the basis of such a determination rule that the necessary sprung acting force becomes the force in the same direction with the direction of a sprung velocity v, when the sprung velocity v is relatively small and a sprung acceleration α is relatively large in the case where the direction of the sprung velocity v and the direction of the sprung acceleration α are different from each other, namely in "the same direction region of sprung velocity and acting force". |
