Patent ID: 6308516
Filing Date: 2001-10-30
Classification: E02F,F15B,Y10S

Abstract:
A control device of a hydraulically-operated machine having hydraulic control apparatus comprised of:a motor, a hydraulic pump which is driven by the motor, at least one hydraulic actuator which is driven in accordance with being supplied with a pressure oil discharged from the hydraulic pump, and a flow control valve which is driven in accordance with an operation of an operation lever and which controls a flow of the pressure oil supplied to the hydraulic actuator; a response suppression target apparatus, established from said hydraulic control apparatus, for which a response of an output signal relative to an input signal is to be suppressed, the control device of the hydraulically-operated machine, comprising:quantity of state detecting means for detecting as a quantity of state either a physical quantity which changes in accordance with an operation of the response suppression target apparatus, or an operation quantity which changes the physical quantity; andresponse suppressing means for suppressing a response of the response suppression target apparatus by subtracting from an input signal to the response suppression target apparatus a frequency component signal of greater than a predetermined frequency, from among quantity of state detection signals detected by the quantity of state detecting means.