| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem that in a hydraulic control device for supplying hydraulic pressure by rotating a hydraulic pump by using a motor, when a load is sharply changed, response delay occurs and it requires time to obtain intended hydraulic pressure.SOLUTION: A hydraulic control device for supplying hydraulic pressure by rotating a hydraulic pump 10 by using a motor 9 includes: a hydraulic sensor 12; a speed command computing unit 3 for outputting a speed command value on the basis of a difference between a hydraulic pressure detection value from the hydraulic sensor 12 and a hydraulic pressure command value; a torque command value computing unit 6 for calculating a torque command value on the basis of a difference between a speed detection value that is obtained by differentiating a position detection value from a motor position detector 8 mounted to the motor 9 and the speed command value; and a current control section 7 for controlling a current of the motor on the basis of the torque command value. Load fluctuation compensation speed output from a load fluctuation compensator 14 is added to the speed command value. |
