| 摘要 |
This horsepower limiting device (101) is equipped with: a pressure sensor (5), which detects the discharge pressure of a hydraulic pump unit; a parallel feed-forward compensator (9), which outputs a compensation value for the purpose of compensating the discharge pressure detected by the pressure sensor on the basis of a post-horsepower-limiting flow volume command specifying a horsepower-limited discharge volume for the hydraulic pump unit; a flow volume limit value calculation unit (11), which calculates a limit value for the discharge flow volume of the hydraulic pump unit on the basis of a preset horsepower limit value for the hydraulic pump unit, and the compensated discharge pressure, which has been compensated by the compensation value output by the parallel feed-forward compensator; and a flow volume limiting unit (12), which outputs the post-horsepower-limiting flow volume command to the hydraulic pump unit on the basis of the flow volume limit value calculated by the flow volume limit value calculation unit and on the basis of a flow volume command designating the discharge flow volume for the hydraulic pump unit. |
