Automatic control system and method for joystick control-based construction equipment

Abstract

The present invention relates to an automatic control system which controls a construction operation apparatus to which a joystick is applied and, more particularly, to an automatic control system for a joystick control-based construction equipment, including: a hydraulic pump which discharges a working fluid in a hydraulic tank so as to supply the working fluid to an actuator; an actuator which drives the construction operation apparatus using the working hydraulic pressure of the hydraulic pump; first electronic hydraulic pressure control valves which are respectively installed at the piston side inlet flow path and the rod side inlet flow path connected to the actuator from the hydraulic pump; second electronic hydraulic pressure control valves which are respectively installed at the piston side outlet flow path and the rod side outlet flow path connected to the hydraulic tank from the actuator; and a control unit which controls the first electronic hydraulic pressure control valves and the second electronic hydraulic pressure control valves connected to the actuator independent of each other. According to the present invention, a hydraulic system for construction equipment is configured as a closed center system which converts an input signal of an electric or hydraulic joystick to a speed signal for the operation apparatus and the speed of the operation equipment is controlled regardless of external load conditions. Accordingly, operator fatigue can be minimized so as to improve operation efficiency, the ability of an unskilled person to control the operation apparatus can be improved, and regular operations can be made into a pattern for the automation of the construction equipment.

Description

technical field [0001] The present invention relates to a system for automatically controlling construction equipment, in particular, a system for automatically controlling construction equipment based on joystick control, which can be achieved by installing an electro-hydraulic control valve on each flow path necessary to control the actuator The flow path area is variably controlled, and the electro-hydraulic control valve can be automatically controlled by converting an input signal of a joystick into a speed signal of a building construction device. Background technique [0002] In general, construction equipment is used for various purposes such as excavating or conveying heavy objects in the construction field and industrial field, and the construction equipment is generally classified into wheel type construction equipment and crawler type construction equipment according to the way of traveling. [0003] Here, construction equipment generally involves excavators, whe...

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Problems solved by technology

[0014] However, the aforementioned methods are affected by the construction environment, such as the characteristics of equipment (including each actuator or angle sensor), road conditions, and loads, so the reproducibility decreases and thus the original function is easily lost

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