Feedforward feedback control having predictive disturbance compensation
US4714988A · kind A · utility
28Cited by
11References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 6, 1985 |
| Grant date | Dec 22, 1987 |
| Priority date | — |
| Expiry date | Feb 6, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B13/04
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In a method and a system for process control comprising in combination a feed-back control in which a manipulated variable is determined in accordance with a deviation of a controlled variable with reference to a target value and a feed-forward control in which a disturbance is detected and a disturbance compensation is determined and used in determining the manipulated variable to counteract the effect of the disturbance, when the control is in a steady state, disturbance compensation is adjusted in such a manner that the difference between the disturbance compensation and the manipulated variable is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.