Fluid control system with on-line diagnosis means isolating malfunctions
    148.
    发明授权
    Fluid control system with on-line diagnosis means isolating malfunctions 失效
    具有在线诊断的流体控制系统意味着分离失效

    公开(公告)号:US3901273A

    公开(公告)日:1975-08-26

    申请号:US34963373

    申请日:1973-04-09

    Applicant: LEESONA CORP

    CPC classification number: G05B19/04 Y10T137/8175 Y10T137/8326 Y10T137/87201

    Abstract: An on-line diagnostic system is provided working conjointly with but not interfering with the operation of a logically controlled industrial control system. Thus binary digital words are displayed at a centralized location for comparison with a scroll chart to indicate irregularities of operations by listing invalid words and to pinpoint correctional techniques with a predetermined servicing recommendation for invalid word combinations. In a preferred embodiment the system is a fluid controlled binary operated cyclic control system provided with logic elements interconnected for automatically progressing through a cyclic operation mode controlling flow paths for working fluid under pressure in a desired sequence to thereby perform a work function. The preferred fluid logic elements comprise a compartment separated into two chambers by a flexible diaphragm which is flexed by pressure differentials to block or open fluid flow paths through the respective chambers. Binary indications as to status of these flow paths are provided as pressure readings at a plurality of key flow path positions thereby producing the binary word information specifying the nature of malfunctions.

    Cylinder motion sensing
    149.
    发明授权
    Cylinder motion sensing 失效
    气缸运动检测

    公开(公告)号:US3895560A

    公开(公告)日:1975-07-22

    申请号:US41468973

    申请日:1973-11-12

    Applicant: LEESONA CORP

    CPC classification number: F15C3/04 F01B31/12 F15C4/00

    Abstract: Fluid back-pressure flowing out a cylinder when being powered through a stroke is sensed by fluid logic circuits to produce a signal which indicates that piston movement is slowed or stopped. A fluid logic device with a flexible impervious diaphragm senses the back pressure to provide an output signal when the piston is not functioning properly. The detector is made more sensitive and selective by restricting a flow path for the back-pressure and operating the logic device as a pressure amplifier, responsive to a threshold back-pressure valve. The sensor is operable to produce a negative going dynamic output transition as a signal that the piston rate is not exceeding a particular threshold value.

    Abstract translation: 在通过行程供电时流出气缸的流体背压由流体逻辑电路感测以产生指示活塞运动减慢或停止的信号。 具有柔性不透水隔膜的流体逻辑装置感测背压以在活塞不能正常工作时提供输出信号。 通过限制用于背压的流动路径并且响应于阈值背压阀而将逻辑装置作为压力放大器操作,检测器变得更灵敏和选择性。 传感器可操作以产生负向动态输出转变,作为活塞速率不超过特定阈值的信号。

    Fluid operable binary control system with diagnostic indicators
    150.
    发明授权
    Fluid operable binary control system with diagnostic indicators 失效
    具有诊断指示器的流体可操作二进制控制系统

    公开(公告)号:US3882893A

    公开(公告)日:1975-05-13

    申请号:US34963473

    申请日:1973-04-09

    Applicant: LEESONA CORP

    CPC classification number: G05B19/44 Y10T137/8326 Y10T137/87201

    Abstract: Pulse actuated binary fluid responsive logic elements are connected in a control system for a fluid flow network operating a fluid responsive mechanism. The logic elements are interconnected to respond to a trigger pulse and automatically sequence through a cycle of operation sensing and responding to fluid pressure conditions at control points in the flow network. A portion of the control points are monitored with diagnostic binary pressure indicators to indicate the status of the network during the control sequence by display of binary words. For correcting malfunctions a comparison chart indicates the nature of invalid words and the corresponding procedure for correcting the malfunctions sensing that word structure, thereby expediting servicing by semi-skilled personnel without detailed knowledge of the system operation.

    Abstract translation: 脉冲致动二元流体响应逻辑元件连接在用于操作流体响应机构的流体流动网络的控制系统中。 逻辑元件相互连接以响应触发脉冲,并且自动地通过操作感测循环并且响应流动网络中的控制点处的流体压力条件。 通过诊断二进制压力指示器监视控制点的一部分,以通过显示二进制字来指示控制序列期间网络的状态。 为了纠正故障,比较图表示无效字的性质以及用于纠正感知该字结构的故障的相应过程,从而加速半技术人员的维修,而无需系统操作的详细知识。

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