| 摘要 |
<p>A hydraulically driving system which comprises: a plurality of flowrate detectors (10A, 10B) for respectively detecting flowrates supplied to a plurality of hydraulic actuators (3A, 3B); valve control devices (11A, 11B) for controlling a plurality of flowrate regulating valves (40A, 40B) such that the flowrates detected by the plurality of flowrate detectors coincide with flowrates instructed by a plurality of control levers (5A, 5B); and pump included rotation control devices (12; 12A-12F) for controlling a discharge flowrate from a hydraulic pump such that the discharge flowrate from the hydraulic pump (1) is less than the total sum of the flowrates instructed by the plurality of control levers by a predetermined flowrate (ΔQref; Xref). The pump inclined rotation control device controls the discharge flowrate of the hydraulic pump (1) by use of flowrate deviations (ΔQ1, ΔQ2) obtained by respectively subtracting the flowrates detected by the flowrate detectors (10A, 10B) from the flowrates instructed by the control levers (5A, 5B).</p> |
