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公开(公告)号:WO0166956A3
公开(公告)日:2002-01-31
申请号:PCT/US0107249
申请日:2001-03-07
Applicant: ROSEMOUNT INC
Inventor: SCHUMACHER MARK S , KROUTH TERRANCE F , WIKLUND DAVID E
Abstract: A system (42) and method for controlling at least one hydraulic actuator (12A-12C) of a hydraulic system (42) includes a flow rate measurement of a hydraulic fluid flow traveling into and out of a cavity (30, 32) of the hydraulic actuator (12, 12A-12C). The flow rate is used to calculate piston information corresponding to a position, velocity, acceleration, and/or direction of movement of a piston (20, 20A-20C) of the hydraulic actuator (12, 12A-12C). The piston information can then be provided to an output device (60) 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 (20, 20A-20C) to produce a control signal (48), which can be used to adjust the hydraulic fluid flow and provide the desired actuation of the piston (20, 20A-20C).
Abstract translation: 用于控制液压系统(42)的至少一个液压致动器(12A-12C)的系统(42)和方法包括流入和流出所述液压系统(42)的空腔(30,32)的液压流体流的流量测量 液压致动器(12,12A-12C)。 流量用于计算对应于液压致动器(12,12A-12C)的活塞(20,20A-20C)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(60)以帮助控制液压致动器。 或者,可以将活塞信息与与活塞(20,20A-20C)的期望位置,速度,加速度和/或移动方向相关的参考信号进行比较,以产生控制信号(48),其可以是 用于调节液压流体流动并提供所需活塞(20,20A-20C)的致动。
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公开(公告)号:DE112004000430T5
公开(公告)日:2006-03-09
申请号:DE112004000430
申请日:2004-03-11
Applicant: ROSEMOUNT INC
Inventor: SCHUMACHER MARK S , BRODEN DAVID A , WIKLUND DAVID E
Abstract: An instrument used to control fluid flow. The instrument has a flow restrictor between an inlet and an outlet. First and second multisensor have sensing surfaces in the inlet and outlet that sense pressures and temperatures of the fluid flow. A circuit generates a mass flow output based on a difference between the pressure in the inlet and the pressure in the outlet. The mass flow output including a temperature correction as a function of at least one of the sensed temperatures in the inlet and outlet.
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公开(公告)号:GB2337331A8
公开(公告)日:2000-01-11
申请号:GB9921315
申请日:1998-03-26
Applicant: ROSEMOUNT INC
Inventor: KLEVEN LOWELL A , HEDTKE ROBERT C , WIKLUND DAVID E
Abstract: A method and apparatus measures a fluid flow using generated vortices. A flow rate is calculated from at least the frequency of the vortices. Warnings are generated for other characteristics of the vortices and fluid measure.
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公开(公告)号:BR9609752A
公开(公告)日:1999-03-30
申请号:BR9609752
申请日:1996-07-11
Applicant: ROSEMOUNT INC
Inventor: WIKLUND DAVID E
Abstract: A transmitter provides an output signal indicative of mass flow rate of fluid through a conduit. The transmitter includes a temperature sensor providing a temperature signal indicative of fluid temperature. A static pressure sensor provides a static pressure signal indicative of static pressure in the conduit. A differential producer provides a differential pressure signal. The transmitter also includes a controller which provides the output signal indicative of mass flow of the fluid through the conduit.
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公开(公告)号:WO2004081500A3
公开(公告)日:2004-11-04
申请号:PCT/US2004007321
申请日:2004-03-11
Applicant: ROSEMOUNT INC
Inventor: SCHUMACHER MARK S , BRODEN DAVID A , WIKLUND DAVID E
CPC classification number: G01F1/40 , G01F1/363 , G01F15/022
Abstract: An instrument (100) used to control fluid flow. The instrument has a flow restrictor (110) between an inlet (106) and an outlet (108). First and second multisensor (120, 124) have sensing surfaces (122, 126) in the inlet and outlet that sense pressures and temperatures of the fluid flow. A circuit (130) generates a mass flow output (155) based on a difference between the pressure in the inlet and the pressure in the outlet. The mass flow output including a temperature correction as a function of at least one of the sensed temperatures in the inlet and outlet.
Abstract translation: 用于控制流体流动的仪器。 仪器在入口和出口之间具有限流器。 第一和第二多传感器在入口和出口具有检测流体流动压力和温度的感测表面。 电路基于入口中的压力和出口压力之间的差异产生质量流量输出。 质量流量输出包括作为入口和出口中感测到的温度中的至少一个的函数的温度校正。
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公开(公告)号:WO9843051A2
公开(公告)日:1998-10-01
申请号:PCT/US9806008
申请日:1998-03-26
Applicant: ROSEMOUNT INC
Inventor: KLEVEN LOWELL A , HEDTKE ROBERT C , WIKLUND DAVID E
CPC classification number: G01F15/024 , G01F1/3254 , G01F1/329
Abstract: A vortex sensor (11) senses generated vortices and provides a vortex signal. A filtering circuit (68) is coupled to the vortex sensor (11) to receive the vortex signal and provide an output indicative of fluid flow. A temperature sensor (82) senses a temperature of the fluid and provides a temperature value, while a pressure sensor (86) senses a pressure of the fluid and provides a pressure value. A processor (70, 70A) is operably coupled to the filtering circuit (68), the temperature sensor (82), and the pressure sensor (86) for receiving the output, the temperature value, and the pressure value, respectively. The processor (70, 70A) calculates a calibration factor as a function of the output, the temperature value, and the pressure value for use in calculating the output value indicative of the flow rate of the fluid.
Abstract translation: 涡流传感器(11)感测产生的涡流并提供涡流信号。 过滤电路(68)耦合到涡流传感器(11)以接收涡流信号并提供指示流体流动的输出。 温度传感器(82)感测流体的温度并提供温度值,而压力传感器(86)感测流体的压力并提供压力值。 处理器(70,70A)可操作地耦合到过滤电路(68),温度传感器(82)和压力传感器(86),用于分别接收输出,温度值和压力值。 处理器(70,70A)根据用于计算表示流体流量的输出值的输出,温度值和压力值来计算校准因子。
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公开(公告)号:DE19982582B3
公开(公告)日:2013-10-10
申请号:DE19982582
申请日:1999-01-13
Applicant: ROSEMOUNT INC
Inventor: BRODEN DAVID A , WIKLUND DAVID E
Abstract: Vorrichtung mit einem Transmitter zum Erzeugen von mit einer Strömung in einem Rohr in Beziehung stehenden Signalen, wobei die Vorrichtung aufweist: einen ersten und einen zweiten Durchlaß, durch die eine Fluidverbindung zwischen dem Transmitter und einer ersten und einer zweiten Position in der Strömung hergestellt wird, die durch einen Rohrabschnitt mit einer im wesentlichen konstanten Querschnittsfläche zwischen den beiden Positionen getrennt sind, wobei der erste Durchlaß durch eine Öffnung im Rohr mit der Strömung im Rohr in Fluidverbindung steht, wobei die Strömung eine Fluidströmungsrichtung durch das Rohr aufweist und die Öffnung im Rohr eine Abmessung quer zur Fluidströmungsrichtung und eine Abmessung parallel zur Fluidströmungsrichtung aufweist, wobei die Abmessung quer zur Fluidströmungsrichtung größer ist als die Abmessung parallel zur Fluidströmungsrichtung; einen mit dem ersten und dem zweiten Durchlaß in Fluidverbindung stehenden Drucksensor, der dazu geeignet ist, in Antwort auf einen Druck am ersten Durchlaß und einen Druck am zweiten Durchlaß ein Sensorausgangssignal bereitzustellen; und eine mit dem Drucksensor verbundene Schaltung zum Empfangen des Sensorausgangssignals und zum Bereitstellen mindestens eines digitalen Wertes, der mit der Strömung in Beziehung steht und eine Funktion des Drucks am ersten Durchlaß und des Drucks am zweiten Durchlaß ist.
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公开(公告)号:AU4164101A
公开(公告)日:2001-09-17
申请号:AU4164101
申请日:2001-02-21
Applicant: ROSEMOUNT INC
Inventor: WIKLUND DAVID E , KROUTH TERRANCE F
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公开(公告)号:SG44501A1
公开(公告)日:1997-12-19
申请号:SG1996001115
申请日:1994-07-29
Applicant: ROSEMOUNT INC
Inventor: LOUWAGIE BENNETT L , BISCHOFF BRIAN J , BRODEN DAVID A , WIKLUND DAVID E , CORPRON GARY P , MUNSON GREGORY S , ZWEBER MICHAEL J
IPC: G01F1/36 , G01F1/88 , G01F15/06 , G01F23/14 , G01F23/18 , G01L7/08 , G01L9/04 , G01L19/00 , G01L19/08
Abstract: A two-wire transmitter senses a pressure using an internal pressure sensor. The transmitter includes an input for receiving a process variable from a remote sensor which is separated from the transmitter. Circuitry in the transmitters transmits information on a two-wire process control loop which is related to the sensed pressure and the process variable.
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公开(公告)号:AU683916B2
公开(公告)日:1997-11-27
申请号:AU7408394
申请日:1994-07-29
Applicant: ROSEMOUNT INC
Inventor: LOUWAGIE BENNETT L , MUNSON GREGORY S , WIKLUND DAVID E , ZWEBER MICHAEL J , BRODEN DAVID A , BISCHOFF BRIAN J , CORPRON GARY P
IPC: G01F1/36 , G01F1/88 , G01F15/06 , G01F23/14 , G01F23/18 , G01L7/08 , G01L9/04 , G01L19/00 , G01L19/08
Abstract: A two-wire transmitter senses a pressure using an internal pressure sensor. The transmitter includes an input for receiving a process variable from a remote sensor which is separated from the transmitter. Circuitry in the transmitters transmits information on a two-wire process control loop which is related to the sensed pressure and the process variable.
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