Title:
CONTROL DEVICE FOR ACTIVE SUSPENSION
Document Type and Number:
Japanese Patent JPH01293211
Kind Code:
A
Abstract:
PURPOSE:To improve a control accuracy by judging a load condition by the inner pressure of a suspension device, and controlling each setting pressure of high and low pressure accumulators so that the air weight flow per unit time to the variation of a suspension inner pressure is to be fixed in the captioned device for a vehicle. CONSTITUTION:A load condition is judged by the signal of an inner pressure sensor 11 with a controller 14, the inner pressures of high and low pressure accumulators 2 and 3 are decided based on a characteristic map so as to obtain the same flow rate Q1 and Q2 as the flow rate at the time of the standard loading, and the inner pressures are set to the setting pressure of each accumulator 2 and 3 at the condition. And an overload or a light load is judged by comparing the new setting pressures with the inner pressures of the high and low pressure accumulators 2 and 3 obtained from the signals of pressure sensors 9 and 10 respectively. A selector valve 12 is turned on for an overload and a selector valve 13 is turned off for a light load, and an air compressor 5 is turned on respectively. This constitution enables the accuracy of a flow rate control to be improved.
Inventors:
HIWATARI MINORU
KAMIMURA KATSUMI
MINE ATSUSHI
KAMIMURA KATSUMI
MINE ATSUSHI
Application Number:
JP12267288A
Publication Date:
November 27, 1989
Filing Date:
May 19, 1988
Export Citation:
Assignee:
FUJI HEAVY IND LTD
International Classes:
B60G17/00; B60G17/015; B60G17/052; (IPC1-7): B60G17/00
Attorney, Agent or Firm:
Kunio Shirahama (2 outside)