公开(公告)号：WO9707444A2

公开(公告)日：1997-02-27

申请号：PCT/US9613028

申请日：1996-08-09

Applicant: ROSEMOUNT INC

Inventor： ZOU HEHONG ,  HEDSTROM KALE P ,  WARRIOR JOGESH ,  HAYS COY L

IPC: G05B13/02 ,  G05B11/42 ,  G05B13/04 ,  G05B23/02

CPC classification number: G05B13/042 ,  G05B11/42

Abstract: A process control system (100) controls a process (110) through a control output signal (u(t)) based on a set point (YSET) and a measured process variable (y(t)). The process control system (100) includes a control circuit having a set point input, a process variable input and a control output. The control circuit generates the control output signal (u(t)) on the control output as a function of the set point (YSET) received on the set point input and the measured process variable (y(t)) received on the process variable input. An auto-tuning circuit (106) excites the process (110), estimates a process model based on a rising dead time, a rising rate-of-change, a falling dead time and a falling rate-of-change in the measured process variable (y(t)) and then tunes the control function to the process (110) based on the process model. The auto-tuning circuit (106) obtains robust results, but is computationally simple such that the circuit can be implemented with hardware or software in low-power and low-memory applications, such as in field-mounted control units.

Abstract translation: 过程控制系统（100）基于设定点（YSET）和测量过程变量（y（t））通过控制输出信号（u（t））来控制过程（110）。 过程控制系统（100）包括具有设定点输入，过程变量输入和控制输出的控制电路。 控制电路根据在设定点输入端接收到的设定点（YSET）和在过程变量上接收到的测量过程变量（y（t）），生成控制输出上的控制输出信号（u（t）） 输入。 自动调谐电路（106）激励过程（110），基于上升的死区时间，上升的变化率，下降的死区时间和下降的测量过程中的估计过程模型 变量（y（t）），然后基于过程模型将控制功能调谐到过程（110）。 自动调谐电路（106）获得了鲁棒的结果，但是在计算上是简单的，使得电路可以用诸如在现场安装的控制单元中的低功率和低存储器应用中的硬件或软件来实现。

公开(公告)号：DE69914086D1

公开(公告)日：2004-02-12

申请号：DE69914086

申请日：1999-08-11

Applicant: ROSEMOUNT INC ,  MICRO MOTION INC

Inventor： ERYUREK EVREN ,  WARRIOR JOGESH ,  PATTEN T

IPC: G05B23/02 ,  G05B9/02 ,  G05D23/24

公开(公告)号：IN191938B

公开(公告)日：2004-01-17

申请号：IN273MA2000

申请日：2000-04-10

Applicant: ROSEMOUNT INC

Inventor： LENZ GARY A ,  BROWN GREGORY C ,  WARRIOR JOGESH

IPC: F16K31/126 ,  G05D16/00

公开(公告)号：IN190322B

公开(公告)日：2003-07-19

申请号：IN274MA2000

申请日：2000-04-10

Applicant: ROSEMOUNT INC

Inventor： LENZ GARY A ,  BROWN GREGORY C ,  WARRIOR JOGESH

IPC: F16K31/126 ,  G05D16/00

公开(公告)号：DE69705471D1

公开(公告)日：2001-08-09

申请号：DE69705471

申请日：1997-03-13

Applicant: ROSEMOUNT INC

Inventor： ERYUREK EVREN ,  WARRIOR JOGESH

IPC: G05B11/36 ,  G05B13/02 ,  G05B21/02 ,  G05B23/02

Abstract: A process device couples to a process control loop. The process device receives process signals. A memory in the process device contains a nominal parameter value and a rule. Computing circuitry calculates a statistical parameter of the process signal and operates on the statistical parameter and the stored nominal value based upon the stored rule and responsively provides an event output based upon the operation. Output circuitry provides an output in response to the event output

公开(公告)号：AU1444400A

公开(公告)日：2000-05-08

申请号：AU1444400

申请日：1999-10-12

Applicant: ROSEMOUNT INC

Inventor： ERYUREK EVREN ,  WARRIOR JOGESH

IPC: G01K15/00 ,  G05B23/02 ,  G07C3/00 ,  G08C19/02

Abstract: A transmitter in a process control system includes a resistance-based sensor sensing a process variable and providing a sensor output. Self heating circuitry coupled to the sensor provides a self heating signal related to the sensor. Analog-to-digital conversion circuitry coupled to the sensor output provides a digitized sensor output, and transmitter output diagnostic correction circuitry provides an auto corrected output as a function of the self heating signal output or in another embodiment, the transmitter outputs a residual life estimate of the sensor as a function of the self heating index. A novel method of calculating the self heating index is also disclosed, which is applicable to various methods for providing a diagnostic transmitter output.

公开(公告)号：CA2346095A1

公开(公告)日：2000-04-27

申请号：CA2346095

申请日：1999-10-12

Applicant: ROSEMOUNT INC

Inventor： ERYUREK EVREN ,  WARRIOR JOGESH

IPC: G01K15/00 ,  G05B23/02 ,  G07C3/00 ,  G08C19/02

Abstract: A transmitter (40) in a process control system (2) includes a resistance-bas ed sensor (10) sensing a process variable and providing a sensor output. Self heating circuitry coupled to the sensor (10) provides a self heating signal related to the sensor (10). Analog-to-digital conversion circuitry (50) coupled to the sensor output provides a digitized sensor output, and transmitter output diagnostic correction circuitry (52) provides an auto corrected output as a function of the self heating signal output or in anoth er embodiment, the transmitter (40) outputs a residual life estimate of the sensor (10) as a function of the self heating index.

公开(公告)号：AU6649790A

公开(公告)日：1991-04-28

申请号：AU6649790

申请日：1990-10-01

Applicant: ROSEMOUNT INC

Inventor： WARRIOR JOGESH ,  JACOBSON VINCENT C ,  ORTH KELLY M ,  TIELENS CRAIG R

IPC: G08C19/02 ,  G05B15/02 ,  G05B19/418 ,  H04B3/50 ,  H04Q9/02 ,  G05B15/00

Abstract: A smart field-mounted control unit, for controlling a process, receives signals and sends a command output over a two-wire circuit which powers the control unit. An input section receives the signals, which can be instructions representative of commands or instruction sets, process variables sensed by external control units or setpoints representative of a desired process state. The instructions are representative of a control requirement of the process and adjust a controlling section in the control unit to generate the command output in conformance with the control requirement. The command output can be a function of the difference between the process setpoint and a process variable, or a function of a linear combination of a process variable and its calculated time integral and time derivative functions. A sensing section in the control unit can sense and scale a process variable for generating the command output as well. The control unit can include a regulator section, controlled by the command output, which regulates application of a mechanical, hydraulic, pneumatic or electromagnetic force applied to the process.

公开(公告)号：DE69735555T2

公开(公告)日：2007-01-18

申请号：DE69735555

申请日：1997-09-23

Applicant: ROSEMOUNT INC

Inventor： TETZLAFF E ,  WARRIOR JOGESH ,  MAALOUF GABRIEL A

IPC: G05B19/418 ,  G05B15/02 ,  G05B19/042

Abstract: The present invention includes a process control instrument (100) having an improved data bus protocol for facilitating communications between master and slave nodes. The process control instrument (100) includes a microprocessor (200) operating in accordance with the SPI data bus protocol, first and second peripheral devices (204,206), and a data bus (220) coupled to the microprocessor and the first and second peripheral devices. The improved data bus protocol used in the process control instruments of the present invention provides numerous advantages such as reduced printed circuit board space requirements and greater interchangeability of peripheral and master node components.

公开(公告)号：DE19705734B4

公开(公告)日：2006-12-21

申请号：DE19705734

申请日：1997-02-14

Applicant: ROSEMOUNT INC

Inventor： WARRIOR JOGESH

IPC: G05B15/02 ,  G05B19/418 ,  H04L12/40

Abstract: A field device such as a transmitter in a process control system includes conversion circuitry coupled between Fieldbus interface circuitry and transmitter interface circuitry. The transmitter includes a transducer for sensing a process variable and providing a transducer output. Measurement circuitry couples to the transducer output, processes the transducer output and provides a measurement output. The transmitter interface circuitry couples to the measurement circuitry and provides an interface output representative of the measurement output. Further, the transmitter interface circuitry receives a transmitter command and responds in accordance with the transmitter command. The Fieldbus interface circuitry is adapted to couple to a process control loop which operates in accordance with the Fieldbus standard.