| 摘要 |
<p>A hydraulic pump control device capable of controlling a pump absorption torque always in balance with an engine output, wherein the delivery flow rates of the hydraulic oil discharged from hydraulic pumps (9, 10) according to the operation of operating means (12, 13) are predicted based on the delivery pressures of the hydraulic pumps (9, 10) driven by an engine (11) and the control input or the physical quantity related to the control input of the operating means (12, 13) operating hydraulic actuators (27,28), the absorption torques of the hydraulic pumps are calculated based on the predicted delivery flow rate and delivery pressure, a predicted rotating speed of the engine (11) is calculated from the calculated absorption torques of the hydraulic pumps (9, 10), and regulators (12, 13) of the hydraulic pumps (9, 10) are controlled based on a deviation between the calculated predicted rotating speed and the actual rotating speed of the engine (11). <IMAGE></p> |
