SYSTEM FOR CONTROLLING LAND LEVELING WORK WHICH USES AN EXCAVATOR

摘要

A grading control system using an excavator is disclosed, which determines and controls an operation amount of an attachment by combining an estimated pose of the attachment and an operator's operation signal of a joystick when a working mode for grading the ground is selected. The grading control system using an excavator includes an actuator connected to a hydraulic pump, an attachment driven by the actuator, a control valve shifted to drive the actuator, an electric joystick, a pressure detection means, a means for setting a working mode, and a controller, and repeatedly performs receiving a joystick operation signal value, a pressure value of an arm cylinder, and information on whether to set the working mode, calculating an external force that is applied to the attachment by the pressure value generated in the arm cylinder if a grading mode is selected, estimating a pose of the arm by the calculated external force value, performing a signal process by filtering the pose of the arm, and calculating operation amounts of a boom and the arm by combining the estimated pose of the arm and a control signal value according to an operator's operation of the joystick and proceeding to an initial stage.