SWING MOTER CONTROL METHOD FOR EXCAVATOR IN OPEN CENTER HYDRAULIC CONTROL SYSTEM

摘要

PURPOSE: A method for controlling a swing motor of an open center type hydraulic pressure system for an excavator is provided to electrically control according to the discharge pressure of a hydraulic pressure pump. CONSTITUTION: A method for controlling a swing motor of an open center type hydraulic pressure system for an excavator comprises next steps. A speed of a swing motor is controlled(S100). A preset pump discharge pressure is compared according to the pressure which is detected by a hydraulic pump discharge pressure detection sensor(S200). Based on the pressure which is detected by a hydraulic pump discharge pressure detection sensor, the limitation speed of the swing motor is controlled according to the comparing result of the preset discharge pressure(S300).