DRIVE CONTROL METHOD OF HYDRAULIC ACTUATOR OF CONSTRUCTION MACHINE

摘要

Disclosed is a drive control method of a hydraulic actuator of a construction machine, wherein the method is for calculating an upper rotation body and a working device so as to carry out complex work. The present invention provides a drive control method of a hydraulic actuator of a construction machine, the method comprising the steps of: determining whether a rotation operation lever and a working device operation lever are operated; calculating the required pressure of a hydraulic cylinder for 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.