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公开(公告)号：DE69617022D1
公开(公告)日：2001-12-20
申请号：DE69617022
申请日：1996-08-09
Applicant: ROSEMOUNT INC
Inventor： ZOU HEHONG , HEDSTROM P , WARRIOR JOGESH , HAYS L
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.
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公开(公告)号：DE69719715D1
公开(公告)日：2003-04-17
申请号：DE69719715
申请日：1997-07-11
Applicant: ROSEMOUNT INC
Inventor： ZOU HEHONG , BRIGHAM E
Abstract: A process control system controls a non-self regulating process through a control output signal based on a set point and a measured process variable. The process control system 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 on the control output as a function of the set point received on the set point input and the measured process variable received on the process variable input. An auto-tuning circuit excites the process, estimates a process model based on an intersection between rising and falling asymptotes of the measured process variable, and then tunes the control function to the process based on the process model. The auto-tuning circuit 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 controllers.
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公开(公告)号：DE69617022T2
公开(公告)日：2002-07-18
申请号：DE69617022
申请日：1996-08-09
Applicant: ROSEMOUNT INC
Inventor： ZOU HEHONG , HEDSTROM P , WARRIOR JOGESH , HAYS L
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.
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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
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。
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公开(公告)号：DE69719715T2
公开(公告)日：2003-09-11
申请号：DE69719715
申请日：1997-07-11
Applicant: ROSEMOUNT INC
Inventor： ZOU HEHONG , BRIGHAM E
Abstract: A process control system controls a non-self regulating process through a control output signal based on a set point and a measured process variable. The process control system 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 on the control output as a function of the set point received on the set point input and the measured process variable received on the process variable input. An auto-tuning circuit excites the process, estimates a process model based on an intersection between rising and falling asymptotes of the measured process variable, and then tunes the control function to the process based on the process model. The auto-tuning circuit 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 controllers.
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Patent Agency Ranking
公开(公告)号：DE69622177T2
公开(公告)日：2002-10-31
申请号：DE69622177
申请日：1996-09-10
Applicant: ROSEMOUNT INC
Inventor： ZOU HEHONG , HAYS L
Abstract: A process controller controls an integrating-type process based on a measured process variable and a set point. The process controller includes an error generating circuit, a non-integrating control circuit and an adaptive bias circuit. The error generating circuit generates an error signal based on a difference between the set point and the measured process variable. The control circuit generates a control signal as a function of the error signal. The adaptive bias circuit adds a bias value to the control signal, the measured process variable or the set point. The bias value is selectively updated as a function of the error signal to force the error signal toward zero.
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公开(公告)号：CA2231733A1
公开(公告)日：1998-02-12
申请号：CA2231733
申请日：1997-07-11
Applicant: ROSEMOUNT INC
Inventor： ZOU HEHONG , BRIGHAM SCOTT E
IPC: G05B13/04
Abstract: A process control system (100) controls a non-self regulating process through a control output signal (u(t)) based on a set point YSET and a measured process variable (y(t)). The process control system includes a control circuit (102, 104, 106, 108) 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, estimates a process model based on an intersection between rising and falling asymptotes of 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 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 controllers.
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公开(公告)号：DE69622177D1
公开(公告)日：2002-08-08
申请号：DE69622177
申请日：1996-09-10
Applicant: ROSEMOUNT INC
Inventor： ZOU HEHONG , HAYS L
Abstract: A process controller controls an integrating-type process based on a measured process variable and a set point. The process controller includes an error generating circuit, a non-integrating control circuit and an adaptive bias circuit. The error generating circuit generates an error signal based on a difference between the set point and the measured process variable. The control circuit generates a control signal as a function of the error signal. The adaptive bias circuit adds a bias value to the control signal, the measured process variable or the set point. The bias value is selectively updated as a function of the error signal to force the error signal toward zero.
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公开(公告)号：BR9610301A
公开(公告)日：1999-07-06
申请号：BR9610301
申请日：1996-08-09
Applicant: ROSEMOUNT INC
Inventor： ZOU HEHONG , HEDSTROM KALE P , WARRIOR JOGESH , HAYS COY L
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.
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公开(公告)号：CA2229937A1
公开(公告)日：1997-03-27
申请号：CA2229937
申请日：1996-09-10
Applicant: ROSEMOUNT INC
Inventor： HAYS COY L , ZOU HEHONG
Abstract: A process controller (100) controls an integrating type process (112) based on a measured process variable (y(t)) and a set point (Y SET). The process controller (100) includes an error generating circuit (102) , a non-integrating control circuit (104) and an adaptive bias circuit (108). The error generating circuit (102) generates an error signal (e(t )) based on a difference between the set point (Y SET) and the measured process variable (y(t)). The control circuit (104) generates a control signal (u(t)) as a function of the error signal (e(t)). The adaptive bias circuit (108) adds a bias value to the control signal (u(t)), the measured process variable (y(t)) or the set point (Y SET). The bias value is selectively updated as a function of the error signal (e(t)) to fo rce the error signal (e(t)) toward zero.
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