Control-loop auto-tuner with nonlinear tuning rules estimators
US6847954B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2000 |
| Grant date | Jan 25, 2005 |
| Priority date | — |
| Expiry date | Sep 18, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B13/0285
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A system for tuning a process control loop includes a tuner module for receiving an error signal representative of the difference between a set point and a process variable, the module generating a first process control signal for controlling the process. The system further includes a controller module for receiving the error signal and a parameter signal from a nonlinear module to generate a second process control signal for controlling the process, wherein the nonlinear module applies a nonlinear procedure to generate the parameter signal. The system further includes a switching means coupled to the tuner module and the controller module to select the appropriate process control signal for controlling the process. The system provided uses nonlinear techniques in the nonlinear module to approximate the desired controller tuning parameters. The nonlinear techniques include neural network tuning, fuzzy logic tuning and nonlinear functions, including sigmoid tuning. A system also provides that the nonlinear module use nonlinear techniques to approximate the desired process model parameters. According to an embodiment of the present invention, the nonlinear module includes a process m…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.