Method of adapting and applying control parameters in non-linear process controllers
US5748467A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1995 |
| Grant date | May 5, 1998 |
| Priority date | — |
| Expiry date | Feb 21, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B13/0275
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A non-linear process controller drives a process variable to be substantially equivalent to a set point based on the expected load disturbances within the process and on a measurement of the actual magnitude of set point changes. The controller uses control parameters developed in an optimal manner to control the process in response to expected load disturbances when no set point change has occurred. Whenever a set point change is detected, the controller derives a set of set point change control parameters and uses these set point change control parameters in responding to the set point change. Each of the set point change control parameters may be developed as a function of the magnitude of the actual change in the set point and according to a set of process characteristics which may include the time delay and the dominant time constant of the process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.