작업기의 유압구동장치 및 유압구동방법
    101.
    发明公开
    작업기의 유압구동장치 및 유압구동방법 有权
    작업기의유압구동장치및유압구동방법

    公开(公告)号:KR1020030026346A

    公开(公告)日:2003-03-31

    申请号:KR1020037002428

    申请日:2002-06-20

    Abstract: 엔진(1)의 연료분사제어장치[전자 거버너(12) 및 제어기(13)]는 거버너영역을 등시특성으로 제어 가능하다. 작업기 제어기(18)는 토출압력신호(P)를 입력하여 유압펌프의 토출압력이 소정압력(P1)을 초과하면 유압펌프의 배기량이 미리 설정된 펌프흡수 토오크곡선(20)에 의하여 정해지는 값을 초과하지 않도록 레귤레이터(16)를 제어하고, 유압펌프(2)의 토출압력이 소정압력(P1) 이하에 있을 때, 유압펌프의 토출압력이 소정압력(P1)으로부터 낮아짐에 따라 유압펌프의 배기량이 증가하도록 레귤레이터(16)를 제어한다. 이에 의하여 거버너영역을 등시특성으로 제어되고 있더라도 엔진부하가 가벼워짐에 따라 유압펌프의 토출유량을 증가시킬 수 있다.

    Abstract translation: 燃料喷射控制装置&电子调速器& 12; 和控制器13; 对于发动机和发动机1& rpar; 能够将调速器区域控制为等时特性和周期; 一台工作机器控制器& 18;& rpar; 接收输送压力信号& P& 并控制调节器& 16& 使得当液压泵的输送压力超过预定压力P1& amp; amp; comma; 液压泵的排量不超过由预先设定的泵吸收转矩曲线< 20; 并且当液压泵的输出压力为2 amp时, 不超过预定压力P1& amp;&;逗号; 当液压泵的排出压力从预定压力p1和p1降低时,液压泵的排量增大; 这使它成为可能&逗号; 即使调控区域被控制为等时特征&逗号, 随着发动机负荷变轻和缩短,增加液压泵的输送速度;

    Drehmomentregelung über Schwenkwinkel bzw. Exzentrizität bei hydrostatischen Maschinen mit axialer und radialer Kolbenanordnung
    106.
    发明公开
    Drehmomentregelung über Schwenkwinkel bzw. Exzentrizität bei hydrostatischen Maschinen mit axialer und radialer Kolbenanordnung 失效
    在与轴向和径向活塞组件静液压机的倾斜角或偏心转矩控制。

    公开(公告)号:EP0616129A1

    公开(公告)日:1994-09-21

    申请号:EP94104021.4

    申请日:1994-03-15

    Inventor: Kordak, Rolf

    Abstract: Schaltungsanordnung zur Drehmomentsteuerung einer hydrostatischen Maschine an einem Hydrauliksystem mit eingeprägtem Betriebsdruck, mit einem mit dem Schwenkwinkel bzw. der Exzentrizität gekoppelten Geber zur Darstellung des Hubvolumenistwertes der Maschine, und mit einem willkürlich einstellbaren Drehmomentsollwert, der ein Regelsignal zur Ansteuerung eines Ventils zum betätigen eines Stellgliedes erzeugt, welches das das Drehmoment bestimmende Hubvolumen der Maschine unter Berücksichtigung der Betriebsparameter wie Druck, Drehzahl und Temperatur verändert, wobei folgendes vorgesehen ist der Schwenkwinkel (die Exzentrizität) wird analog oder digital gemessen und der Sollwert des Schwenkwinkels (oder der Exzentrizität) α= M P wird errechnet (analoge Lösung), oder aber die ausgegebene Spannung für die Schwenkwinkelvorgabe wird aus "vorher" festgelegten Meßwerten (digitale Lösung) bestimmt.

    Abstract translation: 用于静液压机的转矩控制到与外加操作压力的液压系统的电路装置,具有耦合到所述枢转角度和编码器的偏心来表示机器的Hubvolumenistwertes的输入,并用一个任意可调整的扭矩设定点,其用于控制​​阀致动的致动器产生的控制信号 这改变了转矩决定考虑运行参数,如压力,速度和温度,其中,以下提供了发动机的行程体积,该枢转角度(偏心)以模拟或数字被测量,并且该枢转角度的目标值(或偏心)α=(( M)/(P))被计算(模拟结果),或用于枢轴角输入输出电压从“之前”确定的测量值(数字溶液测定)。

    Electrohydraulic control of a hydraulic machine
    107.
    发明公开
    Electrohydraulic control of a hydraulic machine 失效
    Elektro-hydraulische Regelungfüreine Hydraulik-Maschine。

    公开(公告)号:EP0419984A2

    公开(公告)日:1991-04-03

    申请号:EP90117815.2

    申请日:1990-09-15

    Abstract: A rotary hydraulic machine such as a variable displacement in-­line or axial piston pump including a housing (60), a shaft (66), a cylinder block (70), pistons (74) disposed therein and a valve block (62). A microprocessor-based controller (42) is externally mounted on the pump valve block (62) and includes internal memory having various remotely-selectable control programs prestored therein. Sensors (50, 52, 54) responsive to pump operating conditions are connected to the pump control electronics, and include a first sensor (50) responsive to yoke position, a pressure sensor (52) responsive to pump output pressure and a speed sensor (54) responsive to angular velocity of shaft rotation. All of the electronic components are mounted on the valve block (62).

    Abstract translation: 一种旋转液压机,例如可变排量的在线或轴向柱塞泵,包括壳体(60),轴(66),气缸体(70),设置在其中的活塞(74)和阀块(62)。 基于微处理器的控制器(42)被外部安装在泵阀块(62)上,并且包括其中预先存储有各种可远程选择的控制程序的内部存储器。 响应于泵操作条件的传感器(50,52,54)连接到泵控制电子器件,并且包括响应于轭位置的第一传感器(50),响应于泵输出压力的压力传感器(52)和速度传感器 54)响应于轴旋转的角速度。 所有电子部件安装在阀块(62)上。

    Piston pump servo control
    108.
    发明公开
    Piston pump servo control 失效
    ServosteuerungfürKolbenpumpen。

    公开(公告)号:EP0129670A2

    公开(公告)日:1985-01-02

    申请号:EP84104751.7

    申请日:1984-04-27

    Inventor: Davis, Duane J.

    CPC classification number: F04B1/324 F04B2201/12051 Y10S60/911

    Abstract: An electronic closed loop piston pump servo control system including a swash plate within the pump housing which controls pump output as a function of its position about a rotational axis, means for altering the position of said swash plate, means for producing electric signals representative of the desired and actual swash plate angular positions and means for comparing these signals and producing a control or error signal to the means for altering the swash plate position as a function of these signal differences. The means for producing electric signals representative of the actual swash plate position includes a rotary potentiometer mounted in the pump housing and directly connected to the swash plate along a common axis of rotation. This potentiometer produces a d.c. signal indicating the angular position of the swash plate on this common axis. Afailsafe circuit is provided in the comparator means which prevents the error signal from affecting the swash plate angular position if the feedback signal falls below a predetermined reference level. The potentiometer rotates through h a relatively small arc such that when the sliding resistive contacts thereon are worn, the potentiometer contacts may be rotated to respond along a fresh arc.

    Abstract translation: 一种电子闭环活塞泵伺服控制系统,包括在泵壳体内的斜盘,其根据其围绕旋转轴线的位置控制泵输出,用于改变所述斜盘的位置的装置,用于产生代表 期望的和实际的斜盘角度位置,以及用于将这些信号进行比较并产生控制或误差信号到用于根据这些信号差异改变斜盘位置的装置的装置。 用于产生表示实际斜盘位置的电信号的装置包括安装在泵壳体中的旋转电位计,并沿着公共旋转轴直接连接到斜盘。 该电位器产生直流 指示旋转斜盘在该公共轴上的角位置的信号。 在比较器装置中提供故障保护电路,如果反馈信号低于预定参考电平,则防止误差信号影响斜盘角位置。 电位器旋转通过较小的电弧,使得当其上的滑动电阻接触被磨损时,电位器触点可以旋转以沿着新的电弧响应。

    Variable displacement pump control system and a valve for such system
    109.
    发明公开
    Variable displacement pump control system and a valve for such system 失效
    用于可变排量泵和用于滑动这样的控制系统的控制系统。

    公开(公告)号:EP0087773A1

    公开(公告)日:1983-09-07

    申请号:EP83101834.6

    申请日:1983-02-25

    Inventor: El-Ibiary, Yehia

    Abstract: A variable displacement pump control system comprising a variable displacement pump (10) having a movable element (11) for controlling pump displacement, a hydraulic motor (16) for moving the movable element (11), and a transducer (12) for producing an electric signal corresponding to the actual position of the movable element (11). A comparator (13) compares the electrical signal from the transducer (12) and an electrical signal corresponding to the desired displacement of the pump and produces an error signal. A control (20) operates in response to the error signal to meter fluid flow from the pump output (25) to the hydraulic motor (16). The control comprises a relief valve (18), a compensator valve (19) and a servo valve (20). The servo valve (20) is preferably a single-stage valve that includes damping orifices (47) to provide stability.

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