Electronic control method and system for excavator

Abstract

The invention discloses an electric control method and system for an excavator. An electric handle converts the operation of an operator into an electric signal, and transmits the electric signal to a controller to obtain the collected electric signal; the controller carries out filtering processing on the collected electric signal to obtain a filtering signal, carries out slope control on the filtering signal according to a pre-designed slope control method, outputs a slope signal and calculates a current value of an electric control main valve and a current value of an electric control main pump according to the slope signal value, and the electric control main valve and the electric control main pump separately control the output flow of the electric control main pump and a valve element position of the electric control main valve through the current value of the electric control main valve and the current value of the electric control main pump, so that the electric control of an excavator hydraulic system is realized.

Description

technical field [0001] The invention relates to an excavator electric control method and system, belonging to construction machinery. Background technique [0002] Compared with hydraulically controlled excavators, electronically controlled excavators can more precisely control the coordination of excavator movements, reduce pressure loss, reduce fuel consumption, and be more energy-saving and environmentally friendly; electronically controlled excavators mainly use electric handles to control the movement of electric handles The generated operation intention is converted into an electrical signal, and then the electrical signal is collected through a subsequent control method and the excavator is controlled to realize the electronic control operation of the excavator. [0003] The collection and analysis of the electric handle signal is the premise and basis of the whole control method. If the electric signal collection of the handle deviates, it will not only affect the ac...

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Problems solved by technology

[0003]The collection and analysis of the electric handle signal is the premise and foundation of the whole control method. If there is a deviation in the electric signal collection of the handle, it will not only affect the accuracy of the action control, but also cause It may cause misjudgment of action and cause unnecessary harm; at the same time, because the loading rate and decreasing rate of the electric handle signal are much greater than the pilot pressure signal of the traditional hydraulic handle, if the solenoid valve current and the electric control main pump current completely follow the The signal change of the electric control handle will lead to a sharp change in the opening of the spool and the flow rate of the main pump, resulting in unnecessary action shocks and unstable action transitions.

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