| 摘要 |
PROBLEM TO BE SOLVED: To provide a device and a method for controlling a hydraulic operating machine having reduced impact and vibration, and improved operability in braking and stopping of an actuator when a rapid operation is performed. SOLUTION: The discharge flow-control valve 11 is disposed in a discharge side pipeline 15a of a main flow-control valve 7. When a control-lever 8a is operated, a manipulated variable is converted into a pilot pressure by a remote control valve 8, and the pilot pressure is detected by pressure sensors 10a, 10b to be inputted into a controller 13. The pilot pressure is calculated to a pressure fluctuation speed, i.e., an operation speed, in a pressure fluctuation speed computing part 13a, and the operation speed is calculated to an electromagnetic proportional valve current in a electromagnetic proportional valve current computing part 13b. The electromagnetic proportional valve current is outputted from a command part 13c to an electromagnetic proportional valve 12, and the opening of a discharge flow control valve 11 is controlled by a secondary pressure 18 of the electromagnetic proportional valve. COPYRIGHT: (C)2003,JPO
|
