| 摘要 |
PURPOSE:To grasp the road surface condition from the power spectrum density in the displacement amount of each mode of roll, pitch and bounce of road surface input to determine newly control parameters corresponding to the power spectrum density. CONSTITUTION:Ground clearance sensors 28, 31 are disposed in a wheel support part of a chassis and respective hydraulic actuators 19 supporting carburetors. Displacement amounts of respective modes of the carburetors to a road surface are obtained from the variations of ground clearance detected through the respective ground clearance sensors 28, 31 by a relative displacement amount calculating means 35. The power spectrum density of the displacement amounts in respective modes of road surface input is obtained from the power spectrum density in the displacement amount of respective modes of carburetors by a control parameter calculating means 34 to obtain the area ratio of respective frequency regions obtained by dividing the frequency characteristic diagram by at least one frequency. The control parameter determined from the respective area ratio by a control amount calculating means 37 is used to obtain a control force for restraining the displacement of the respective modes of carburetors and generate a control force in the hydraulic actuators. |
