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    • 7. 发明授权
    • 작업기의 제어방법 및 그 제어장치
    • 작업기의제어방법및그제어장치
    • KR100397516B1
    • 2003-09-13
    • KR1020007001391
    • 1999-05-10
    • 캬타피라 재팬 가부시키가이샤
    • 모리야나오유키후루타히데토마토바나부아키
    • F15B21/02
    • E02F9/2228F15B11/163F15B19/002F15B21/087F15B2211/20546F15B2211/20553F15B2211/30535F15B2211/3054F15B2211/3111F15B2211/327F15B2211/50536F15B2211/5157F15B2211/6054F15B2211/6309F15B2211/6313F15B2211/6653F15B2211/6656F15B2211/71
    • An electrohydraulic conversion valve (3a) such as a cylinder controlling control valve (3) is connected to the output side of a controller (23) for performing a control computing based on an operation electric signal from an electric joystick (12a) or the like. A control valve return pressure (PT) and a load sensing pressure (PL) are detected by first and second pressure detectors (18), (19) and the start of a hydraulic cylinder (7) is detected by a rise of the pressure difference ( DELTA P) between these pressures. The controller (23) is provided with a function generator (14a) having a standard function (F) for setting the relation between an operation electric signal and an instruction value to the electrohydraulic conversion valve (3a) and the like and with a calibration computing unit (20) for modifying the standard function (F). The calibration computing unit (20) computes a deviation ( DELTA S) between an instruction value set by the standard function (F) at the start of the cylinder and an instruction value stored at the actual start of the cylinder and adds the deviation to the standard function (F).
    • 在控制器(23)的输出侧连接有液压缸控制用控制阀(3)等电动液压转换阀(3a),根据来自电动操纵手柄(12a)等的操作电信号进行控制运算 。 通过第一和第二压力检测器(18),(19)检测控制阀返回压力(PT)和负荷检测压力(PL),并且通过压力差的升高检测液压缸(7) (DELTA P)在这些压力之间。 控制器(23)设有具有用于设定电动液压转换阀(3a)等的操作电信号和指令值之间的关系的标准函数(F)的函数发生器(14a),并且具有校准计算 单元(20)用于修改标准函数(F)。 校准计算单元(20)计算在气缸开始时由标准函数(F)设定的指令值与气缸实际开始时存储的指令值之间的偏差(ΔS),并将该偏差加到 标准功能(F)。 <图像>
    • 8. 发明授权
    • 액추에이터 예측 시스템
    • 执行器预测系统
    • KR101729822B1
    • 2017-04-25
    • KR1020147032533
    • 2013-04-19
    • 타보르 켄트
    • 타보르켄트
    • F15B15/28F15B19/00G01M99/00
    • F15B15/2838F15B11/10F15B15/2861F15B19/005F15B2211/6306F15B2211/6313F15B2211/6336F15B2211/6343F15B2211/6656F15B2211/7053F15B2211/857F15B2211/864F15B2211/865F15B2211/87G01M3/26G01M3/2869G01M99/008
    • 액추에이터시스템은실린더에대해이동가능한피스톤을포함하는피스톤-실린더구조물을포함하고있다. 제1 흐름경로는피스톤-실린더구조물과유체소통하고제2 흐름경로는피스톤-실린더구조물과유체소통한다. 제어시스템은피스톤을제1 방향으로이동시키기위해유동적으로제1 흐름경로를고압유체의소스에연결하고상기제2 흐름경로를드레인에연결하도록작동가능하다. 압력센서는제1 흐름경로에유동적으로연결되어있으며압력대 시간곡선을생성하기위해피스톤의이동동안충분한압력데이터를측정하도록작동가능하다. 제어시스템은피스톤-실린더구조물의상태를판정하기위해생성된압력대 시간곡선을제어시스템에저장된공지의표준압력대 시간곡선에비교하도록작동가능하다.
    • 致动器系统包括活塞 - 缸体结构,活塞 - 缸体结构包括相对于缸体可移动的活塞。 第一流动路径与活塞 - 缸体结构流体连通并且第二流动路径与活塞 - 缸体结构流体连通。 控制系统可操作地将第一流动路径流体连接到高压流体源,并且第二流动路径流到排放口以沿第一方向移动活塞。 压力传感器可操作地连接到第一流动路径并且可操作以在活塞移动期间测量足够的压力数据以产生压力对时间曲线。 控制系统可操作用于将产生的压力 - 时间曲线与存储在控制系统中的已知标准压力 - 时间曲线相比较,以确定活塞 - 缸体结构的状态。
    • 10. 发明公开
    • 건설기계의 유압시스템
    • PCA建筑机械液压系统
    • KR1020140117007A
    • 2014-10-07
    • KR1020130031556
    • 2013-03-25
    • 두산인프라코어 주식회사
    • 조용락장달식정우용안민하서아름
    • E02F9/22F02D29/04
    • F02D29/04E02F9/2217E02F9/2246E02F9/2289E02F9/2292E02F9/2296F15B11/17F15B2211/20523F15B2211/20546F15B2211/20561F15B2211/20569F15B2211/20576F15B2211/27F15B2211/6309F15B2211/633F15B2211/6333F15B2211/6346F15B2211/6652F15B2211/6656F15B2211/7135
    • The present invention relates to a PCA hydraulic system for a construction machine. The PCA hydraulic system for a construction machine comprises: an engine torque (tau) generated by inputting an engine rotations per minute (rpm) (w) in an engine torque map (210); a first capacity command (bcmd1, bcmd2,....... bcmdn) generated by inputting a required value of a manipulation unit (120) in a requirement-capacity map (220); a required torque (treq) generated by a plurality of pressure (Dp1, Dp2,....... Dpn) of a plurality of pumps/motors (40) by the capacity (b1, b2,....... bn) of the pluralaty of pumps/motors (40); a torque constant (a) of a torque rate generated by dividing the engine torque (tau) by the required torque (treq); and a second capacity command (bcmdj1, bcmdj2,....... bcmdjn) generated by a plurality of the first capacity command (bcmd1, bcmd2,....... bcmdn) by the torque constant (a). The plurality of pumps/motors (40) can be controlled by the finally generated second capacity command (bcmdj1, bcmdj2,....... bcmdjn).
    • 本发明涉及一种用于建筑机械的PCA液压系统。 用于建筑机械的PCA液压系统包括:通过在发动机扭矩图(210)中输入每分钟(rpm)(w)的发动机转速而产生的发动机扭矩(τ); 通过在需求容量图(220)中输入操作单元(120)的所需值而产生的第一容量命令(bcmd1,bcmd2,.......bcmdn); 由多个泵/马达(40)的多个压力(Dp1,Dp2,... Dpn)产生的所需扭矩(treq)乘以容量(b1,b2,......) 的多个泵/电动机(40); 通过将发动机扭矩(τ)除以所需转矩(treq)而产生的转矩比的转矩常数(a); 以及由多个第一容量命令(bcmd1,bcmd2,... bcmdn)生成的第二容量命令(bcmdj1,bcmdj2,.......bcmdjn)乘以转矩常数(a)。 可以通过最终生成的第二容量命令(bcmdj1,bcmdj2,... bcmdjn)来控制多个泵/马达(40)。