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29 条记录 (耗时 0.039 秒)

    System for controlling hydraulic actuator
    6.
    发明授权
    System for controlling hydraulic actuator 有权
    液压执行器控制系统

    公开(公告)号：US06789458B2

    公开(公告)日：2004-09-14

    申请号：US10317311

    申请日：2002-12-12

    申请人： Mark S. Schumacher ,  Terrance F. Krouth ,  David E. Wiklund ,  Richard J. Habegger ,  Richard R. Hineman

    发明人： Mark S. Schumacher ,  Terrance F. Krouth ,  David E. Wiklund ,  Richard J. Habegger ,  Richard R. Hineman

    IPC分类号： F15B903

    CPC分类号： F15B15/2838

    摘要： A system and method for controlling at least one hydraulic actuator of a hydraulic system includes a flow rate measurement of a hydraulic fluid flow traveling into and out of a cavity of the hydraulic actuator. The flow rate is used to calculate piston information corresponding to a position, velocity, acceleration, and/or direction of movement of a piston of the hydraulic actuator. The piston information can then be provided to an output device to aid in the control of the hydraulic actuator. Alternatively, the piston information can be compared to a reference signal relating to a desired position, velocity, acceleration, and/or direction of movement of the piston to produce a control signal, which can be used to adjust the hydraulic fluid flow and provide the desired actuation of the piston.

    摘要翻译： 用于控制液压系统的至少一个液压致动器的系统和方法包括流入和流出液压致动器的腔的液压流体流的流量测量。 流量用于计算对应于液压致动器的活塞的位置，速度，加速度和/或运动方向的活塞信息。 然后可以将活塞信息提供给输出装置以帮助控制液压致动器。 或者，可以将活塞信息与与活塞的期望位置，速度，加速度和/或运动方向相关的参考信号进行比较，以产生控制信号，该控制信号可用于调节液压流体流动并提供 所需的活塞致动。

    RF cavity-based process fluid sensor
    7.
    发明授权
    RF cavity-based process fluid sensor 有权
    基于RF腔的过程流体传感器

    公开(公告)号：US08085156B2

    公开(公告)日：2011-12-27

    申请号：US12384701

    申请日：2009-04-08

    申请人： Mark S. Schumacher ,  Liangju Lu

    发明人： Mark S. Schumacher ,  Liangju Lu

    IPC分类号： G08B21/00

    CPC分类号： H04Q9/00 ,  H04Q2209/40 ,  H04Q2209/75 ,  H04Q2209/84

    摘要： A remote system for sensing a process fluid parameter comprises a cavity, a tuner and a signal coupler. The cavity is configured to resonate at a central frequency that shifts in response to the process fluid parameter. The tuner is configured to tune the central frequency. The signal coupler is configured to receive a query signal, and to transmit an echo signal when the query signal matches the shifted central frequency.

    摘要翻译： 用于感测过程流体参数的远程系统包括空腔，调谐器和信号耦合器。 空腔被配置为以响应于过程流体参数而偏移的中心频率谐振。 调谐器配置为调节中心频率。 信号耦合器被配置为接收查询信号，并且当查询信号与移动的中心频率匹配时发送回波信号。

    Adapter for providing digital communication between a field device and a computer
    8.
    发明授权
    Adapter for providing digital communication between a field device and a computer 有权
    用于在现场设备和计算机之间提供数字通信的适配器

    公开(公告)号：US07675932B2

    公开(公告)日：2010-03-09

    申请号：US11595466

    申请日：2006-11-09

    申请人： Mark S. Schumacher

    发明人： Mark S. Schumacher

    IPC分类号： G06F13/12

    CPC分类号： G06F13/385 ,  G05B19/0423 ,  G05B2219/25166 ,  G05B2219/25425 ,  G05B2219/25428

    摘要： An adapter provides the components necessary to operate a computer or similar device as a communicator for smart field devices. The adapter includes terminals adapted for connection to the field device and a communication cable adapted for connection to the computer. Memory located within the adapter stores application software associated with the communication protocol employed by the field device. The application software stored by the memory is loaded onto the computer via the communication cable, allowing a user to receive and send data to the field device based on the communication protocol employed by the field device. The adapter includes a port circuit that interfaces bi-directionally communication between the computer and the field device using the communication protocol.

    摘要翻译： 适配器提供操作作为智能现场设备的通信器的计算机或类似设备所需的组件。 适配器包括适于连接到现场设备的终端和适于连接到计算机的通信电缆。 位于适配器内的存储器存储与现场设备采用的通信协议相关联的应用软件。 由存储器存储的应用软件通过通信电缆加载到计算机上，允许用户基于现场设备采用的通信协议接收和发送数据到现场设备。 适配器包括使用通信协议在计算机和现场设备之间进行双向通信的端口电路。

    Bi-directional differential pressure flow sensor
    10.
    发明授权
    Bi-directional differential pressure flow sensor 有权
    双向差压流量传感器

    公开(公告)号：US06725731B2

    公开(公告)日：2004-04-27

    申请号：US10289149

    申请日：2002-11-06

    申请人： David E. Wiklund ,  Terrance F. Krouth ,  David A. Broden ,  Mark S. Schumacher

    发明人： David E. Wiklund ,  Terrance F. Krouth ,  David A. Broden ,  Mark S. Schumacher

    IPC分类号： G01F137

    CPC分类号： G01F1/50 ,  F15B15/2838 ,  G01F1/40 ,  G01F1/42 ,  G01F1/44

    摘要： Disclosed is a bi-directional differential pressure flow sensor that is configured to establish a direction and flow rate of a fluid flow. The flow sensor includes a flow restriction member, a differential pressure sensor, and processing electronics. The flow restriction member is configured to produce a pressure drop when placed inline with the fluid flow. The differential pressure sensor is embedded or integral with the flow restriction member and produces a differential pressure signal that is indicative of the pressure drop. The processing electronics produces a flow rate signal that is indicative of the direction and flow rate of the fluid flow as a function of the differential pressure signal.

    摘要翻译： 公开了一种被配置为建立流体流动的方向和流速的双向压差流量传感器。 流量传感器包括流量限制构件，差压传感器和处理电子器件。 流动限制构件被配置为当与流体流动放置时产生压降。 差压传感器与流量限制部件嵌入或一体，并产生指示压降的差压信号。 处理电子器件产生流量信号，其表示作为差压信号的函数的流体流动的方向和流速。