Disclosed is a method for compensating for the flow rate of a variable capacity-type hydraulic pump such that, when a manipulation lever is manipulated, a discontinuous section, which has no change in the discharge flow rate of the hydraulic pump, is eliminated. The present invention provides a method for compensating for the flow rate of a hydraulic pump of a construction machine comprising a hydraulic pump, which is connected to an engine, a hydraulic actuator, which is driven by operation oil of the hydraulic pump, a control valve, which is installed in a channel of the hydraulic pump, a manipulation lever, a means for detecting the amount of manipulation of the manipulation lever, a means for detecting the number of revolutions of the engine, and a controller for controlling the control valve according to a signal pressure, which follows the amount of manipulation of the manipulation lever, and a signal resulting from detection of the number of revolutions of the engine, the method being characterized by comprising the steps of: detecting a signal pressure, which results from the amount of manipulation of the manipulation lever, and the number of revolutions of the engine; setting a required volume, which results from the amount of manipulation of the manipulation lever, and a compensation ratio and setting a required volume, which is obtained by compensating for the number of revolutions of the engine; and controlling the hydraulic pump so as to discharge a flow rate that corresponds to the sum of the required volume, which results from the amount of manipulation of the manipulation lever, and a flow rate that follows a calculation value obtained by multiplying a value of difference between a value of the required volume, which is obtained by compensating for the number of revolutions of the engine, and a value of the required volume, which results from the amount of manipulation of the manipulation lever, by the percentage of the compensation ratio.

L'invention concerne un procédé destiné à compenser le débit d'une pompe hydraulique du type à capacité variable, de sorte à éliminer une section discontinue, qui ne révèle aucune variation dans le débit de refoulement de la pompe hydraulique, lors de la manipulation d'un levier de manipulation. La présente invention concerne un procédé destiné à compenser le débit d'une pompe hydraulique d'une machine de construction comprenant une pompe hydraulique, qui est reliée à un moteur, un actionneur hydraulique, qui est entraîné par de l'huile de fonctionnement de la pompe hydraulique, une soupape de commande, qui est installée dans un canal de la pompe hydraulique, un levier de manipulation, un moyen de détection de la quantité de manipulation du levier de manipulation, un moyen de détection du nombre de tours du moteur, et un dispositif de commande permettant de commander la soupape de commande en fonction d'une pression signal, qui suit la quantité de manipulation du levier de manipulation, et un signal résultant de la détection du nombre de tours du moteur, le procédé étant caractérisé en ce qu'il comprend les étapes consistant à : détecter une pression signal, qui résulte de la quantité de manipulation du levier de manipulation, et le nombre de tours du moteur; régler un volume requis, qui résulte de la quantité de manipulation du levier de manipulation, et un rapport de compensation et régler un volume requis, qui est obtenu par compensation du nombre de tours du moteur; et commander la pompe hydraulique de manière à refouler un débit qui correspond à la somme du volume requis, qui résulte de la quantité de manipulation du levier de manipulation, et un débit qui suit une valeur de calcul obtenue en multipliant une valeur de différence entre une valeur du volume requis, qui est obtenue par compensation du nombre de tours du moteur, et une valeur du volume requis, qui résulte de la quantité de manipulation du levier de manipulation, par le pourcentage du rapport de compensation.

조작레버를 조작시 유압펌프 토출유량의 변화가 없는 불연속 구간을 없애기 위한 가변용량형 유압펌프 유량 보상방법을 개시한다. 본 발명에 따른 유압펌프 유량 보상방법에 있어서, 엔진에 연결되는 유압펌프; 유압펌프의 작동유에 의해 구동되는 유압 액츄에이터; 유압펌프의 유로에 설치되는 컨트롤밸브; 조작레버; 조작레버 조작량을 검출하는 수단; 엔진 회전수를 검출하는 수단; 상기 조작레버 조작량에 따른 신호압력 및 엔진 회전수의 검출신호에 따라 컨트롤밸브를 제어하는 제어기를 구비하는 건설기계의 유압펌프 유량 보상방법에 있어서: 상기 조작레버 조작량에 의한 신호압력 및 엔진 회전수를 검출하는 단계; 상기 조작레버 조작량에 의한 요구 용적 및 보상 비율을 설정하고, 상기 엔진 회전수가 보상된 요구 용적을 설정하는 단계; 상기 엔진 회전수가 보상된 요구 용적값과 상기 조작레버 조작량에 의한 요구 용적값의 차이값에 상기 보상 비율의 백분율을 곱한 연산값에 따른 유량과, 상기 조작레버 조작량에 의한 요구 용적을 더한 유량이 토출되도록 상기 유압펌프를 제어하는 단계;를 포함하는 것을 특징으로 하는 건설기계의 유압펌프 유량 보상방법을 제공한다.