| 摘要 |
PURPOSE:To improve a vehicle on a comfortability by extracting a value in a fixed frequency range containing between resonance frequencies for sprung and sprung among wheel load detected values, and operating a pressure control valve according thereto. CONSTITUTION:Loads applied to respective wheels are detected with a wheel load detecting means, among detected wheel loads, a value of a fixed frequency range containing between a sprung resonance frequency and an unsprung resonance frequency is extracted with a filter, and in accordance to the extracted value, a control means outputs a command to a pressure control valve. Then, as the pressure control valve makes a liquid pressure cylinder change on working liquid pressure according to the command, the liquid pressure cylinder is generated with a force according to a load detected value for a fixed frequency range mensioned above among loads supplied to respective wheels, and a transmission rate for the body on the vibration in the fixed frequency range is reduced among vibrations input to unspring. Thereby, a vehicle comfortability can be improved. |
