| 摘要 |
PURPOSE:To reduce the amount of fluid used, by furnishing a controller to supply and exhaust fluid to/from a suspension through opening and closing of a supply value and an exhaust valve, and equipping this controller with a control valve opening/closing logic which does not allow simultaneous opening of the supply and exhaust valves and which minimizes the response delay. CONSTITUTION:At a controller A, signals from sensors G1-Gm to sense the vertical acceleration, vertical displacing speed, and the amount of vertical displacement of an air suspension part are multiplied with gains R1-Rm, respectively, to serve determination of command rates of flow Q1-Qm, and the outputs are added together to calculate the total command rate of flow Q. The corrected command rate of flow Q' from this total command rate of flow Q is passed through a filter W and converted into the practical command rate of flow Q''. Now a control opening/closing logic U controls a rate-of-flow control valve C in accordance with the practical command rate of flow Q'', and air is supplied and exhausted to/from the suspension. Here the control valve opening/closing logic U shall be such that a supply valve C1 and an exhaust valve C2 of the rate-of-flow control valve C do not open simultaneously and the response delay is minimized. |
