Drive control method of hydraulic actuator of construction machine

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10787791
APP PUB NO 20180002896A1
SERIAL NO

15542018

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A drive control method of a hydraulic actuator of a construction machine includes: determining whether a rotation operation lever and a working device operation lever are operated; calculating the required pressure of a hydraulic cylinder fix a working device according to the operation amount of the rotation operation lever; calculating the required flow rates of a swing motor and the hydraulic cylinder for the working device, the required flow rates corresponding to the operation amounts of the working device operation lever and the rotation operation lever; calculating the opening areas of the first and second proportional solenoid valves of an inlet side and an outlet side by using the calculated required pressure and required flow rates of the hydraulic cylinder for the working device and the swing motor; and calculating current values to be inputted into the first and second proportional solenoid valves of the inlet side and the outlet side according to preset data values or a table in comparison with the calculated opening areas of the first and second proportional solenoid valves of the inlet side and the outlet side.

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First Claim

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Patent Owner(s)

  • VOLVO CONSTRUCTION EQUIPMENT AB

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jung, Tae-Rang Gyeongsangnam-do, KR 3 7
Lee, Chun-Han Gyeongsangnam-do, KR 20 80

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