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    • 6. 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>