公开(公告)号：US3918677A

公开(公告)日：1975-11-11

申请号：US41387373

申请日：1973-11-08

Applicant: LEESONA CORP

Inventor： COWAN LARRY CLYDE

IPC: F15C3/04 ,  F15C4/00 ,  F15C7/00 ,  F16K31/126

CPC classification number: F15C4/00 ,  F15C3/04

Abstract: Fluid logic type system elements have structure and fluid flow paths which modify the shape of input fluid pressure signal waveforms to produce output waveforms of desired characteristics. Basic logic elements are of the taut flexible diaphragm type that control fluid flow paths through two opposed chambers by differential fluid pressures in the chambers on either side of the diaphragms. The chamber structure intercepting the diaphragm is constructed with critical profile shape to afford different characteristic responses to input fluid signals to the chambers. With such elements fluid signals may be introduced in various flow paths to achieve various output waveform shapes in response to generally on-off type digital input signals, including shortening, lengthening, inverting, delaying, and sharpening. Such functions as integration, differentiation, threshold detection and oscillation are attained. By use of passive resistive and capacitive fluid flow elements, delays and wave shaping features are simply introduced to improve the waveshaping versatility of the logic elements. Thus, simple logic elements or combinations thereof are employed together with construction of fluid flow path characteristics and selection of flow routes in a network to produce various modifications on signal pressure waveform shapes. Particular advantage is realized by using the dynamic negative going transitions of waveforms thereby providing fast switching signals, amplification and waveform shape controls.

Abstract translation: 流体逻辑类型系统元件具有改变输入流体压力信号波形的形状以产生期望特性的输出波形的结构和流体流动路径。 基本的逻辑元件是紧凑的柔性膜片类型，其通过在隔膜两侧的腔室中的差动流体压力来控制通过两个相对的腔室的流体流动路径。 拦截隔膜的腔室结构被构造成具有关键轮廓形状，以对输入的腔室信号提供不同的特征响应。 利用这样的元件，可以在各种流动路径中引入流体信号，以响应于通常的开 - 关型数字输入信号来实现各种输出波形形状，包括缩短，延长，反转，延迟和锐化。 实现了集成，微分，阈值检测和振荡等功能。 通过使用无源电阻和电容流体流动元件，简单地引入延迟和波形整形特征，以改善逻辑元件的波形通用性。 因此，简单的逻辑元件或其组合与流体流动路径特性的构造以及网络中的流动路线的选择一起使用，以对信号压力波形形状进行各种修改。 通过使用波形的动态负向跃迁来实现特别的优点，从而提供快速切换信号，放大和波形形状控制。

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

Inventor： BROUWER CHARLES WILLIAM ,  COWAN LARRY CLYDE

IPC: D01G31/00 ,  G05B19/04 ,  G05B23/02 ,  F16K37/00

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.

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

Inventor： BROUWER CHARLES WILLIAM ,  COWAN LARRY CLYDE

IPC: F15C4/00 ,  G05B19/44 ,  F01K13/02 ,  F16K37/00

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。