| 摘要 |
In apparatus and method for controlling a damping force characteristic for a vehicular suspension system, a relative velocity between a sprung mass and an unsprung mass is calculated using a predetermined transfer function from a sprung mass vertical velocity derived on the basis of a sprung mass acceleration signal. The predetermined transfer function is, in a embodiment, expressed as GU(S)=(QS2+RS)/(FS2+DS +E), wherein Q=-m1xc2, R=-m1xk2, F=c1xc2, D=c1xk2, E=k1xk2, S denotes a Laplace operator, c1 denotes an attenuation constant of each shock absorber, c2 denotes an attenuation constant of the corresponding one of road wheels, k1 denotes a spring constant of the shock absorber. k2 denotes a spring constant of the corresponding one of the road wheels, m1 denotes the sprung mass, and m2 denotes the unsprung mass.
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