| 摘要 |
<p>Disclosed is an electric oil pressure system of a construction equipment, the electric oil pressure system including: a regeneration circuit unit included in control valves 130 and 140 for controlling a channel of the operation oil supplied to the first and second group actuators, the regeneration circuit unit connecting oil pressure lines of each head side and each load side of the first and second group actuators so as to supply a part of operation oil, which is discharged from any one of each head side and each load side of the first and second group actuators, to the other side, when the working apparatus connected with the first and second group actuators is driven by one selected from its weight and inertia; and an actuator-used oil quantity calculation unit 110, which calculates an measurement value of oil pressure of each head side and each load side of the first and second group actuators, a measurement pressure value of oil discharged from each pump, and a measurement value of an opening ratio of each control valve so as to obtain a quantity of regenerated oil Qregen, which is again supplied to the first and second group actuators through the regeneration circuit unit, wherein the swash plate controller 1220 calculates a quantity of currently used oil QSCyi and a quantity of oil Qpump to be discharged from the first and second pumps 70a and 70b by subtracting the quantity of regenerated oil Qregen from a quantity of required oil Qset input through operation of the joystick, thereby calculating an angle of each swash plate of the first and second pumps 70a and 70b.</p> |
