公开(公告)号：DE69634311D1

公开(公告)日：2005-03-10

申请号：DE69634311

申请日：1996-08-09

Applicant: ROSEMOUNT INC

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

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

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.

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：DE69634311T2

公开(公告)日：2006-01-12

申请号：DE69634311

申请日：1996-08-09

Applicant: ROSEMOUNT INC

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

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

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.

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

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

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.

公开(公告)号：CA2227545A1

公开(公告)日：1997-02-27

申请号：CA2227545

申请日：1996-08-09

Applicant: ROSEMOUNT INC

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

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

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.