| 摘要 |
<p>PURPOSE: A device and a method for controlling a hydraulic system of a construction device is provided to improve the usability and to reduce the fuel efficiency because an operator operates while feeling working loads through a simple configuration of a control device. CONSTITUTION: A device for controlling a hydraulic system of a construction device comprises a hydraulic pump(P), an actuator(1), an operating lever(11), an operating lever detector(21), an load pressure detector(24), a control unit(22), an electronic proportional valve(23). The hydraulic pump operates by receiving power from an engine(E). The actuator is operated by receiving a discharge flow rate of the hydraulic pump through a main control valve(12). The operating lever generates actuating signals for the actuator. The control unit calculates control signals of a main control valve according to signals from the load pressure detector and operating lever detector. The electronic proportional valve outputs a second pressure to the main control valve side according to control signals of the control unit.</p> |
