PURPOSE: To provide a hydraulic control device of a suspension by which a resonance amplitude of vibration can be restrained.
CONSTITUTION: A change in rod side oil pressure of hydraulic cylinders of a suspension is compensated by a pressure sensor 17, a filter 25 and an operation means 26. Directional acceleration sensors 6 and 7 detect vibration of a vehicle, and speed operation parts 28a and 28b perform operation on a phase and a gain to a frequency of vibration, and a distribution operation means 29 distributes both to the respective hydraulic cylinders. These are subtracted from a value by adding a correction value of a pressure correcting part 27 to an operation value of the operation means 26 by a subtracting means, and are inputted to phase advancing elements 30, and here, the phase to the frequency of vibration is advanced, and operation is performed on the gain, and oil pressure to be applied to the head side of the hydraulic cylinders is controlled by an obtained signal.
| JP4996431 | Stand-alone suspension for work vehicles |
| WO/2018/172762 | VEHICLE SUSPENSION SYSTEM |
| JPH0427614 | SUSPENSION DEVICE OF VEHICLE |
INNAMI TOSHIYUKI
MIYAKI KATSUMI
TAHARA KOJI
