| 摘要 |
PURPOSE:To improve operability of actuators by changing the correlation between the stroke of an operation lever and the spool stroke of control valves with pressure compensation, in accordance with the change in rotational speed of an engine. CONSTITUTION:In a controller 6a which outputs a drive signal SO to the driving portions of control valves 3, 4 with pressure compensation, there are provided a function generating means 17, which outputs a gain K corresponding to a desired rotational speed signal No, and a multiplier 18, so as to change the correlation between the stroke of an operation lever 5 and the spool stroke of the control valves 3, 4 with pressure compensation in accordance with the change in rotational speed of an engine 10. Therefore, it is possible to relatively widen a metering region where the speed of actuators 1, 2 can be controlled so as to improve operability of actuators 1, 2.
|
