| 摘要 |
PROBLEM TO BE SOLVED: To provide a controller for generating a damping force maximizing signal only in the vicinity of a resonance point of a car body and a wheel by a damping force variable hydraulic shock absorber capable of switching maximum or minimum two damping force characteristics at a high speed. SOLUTION: This suspension mechanism has a highly responsive damping force variable hydraulic shock absorber 4 where a low speed area characteristic of a piston becomes a viscous damper, a vertical acceleration sensor 2 for detecting vertical acceleration of a car body 3, a vertical acceleration sensor 6 for detecting vertical acceleration of a wheel 7 and an electronic controller 20 for generating an ON.OFF signal on the basis of a vertical speed of the phase-corrected car body 3 and a vertical speed of the piston of the hydraulic shock absorber 4. Damping force of the hydraulic shock absorber 4 is switched to a maximum or a minimum by the ON.OFF signal of the electronic controller 20. |
