Process control apparatus for optimal adaptation to a disturbance
US4698745A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 1985 |
| Grant date | Oct 6, 1987 |
| Priority date | — |
| Expiry date | Feb 7, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B13/04
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A process control apparatus according to the present invention comprises a feed back control system for outputting a feedback control signal which is computed by comparing and adjusting a set value and a process variable, and a feedforward control system for outputting a disturbance compensation signal by detecting and compensating for the disturbance based on a feedforward control model. The gain of the feedback control signal is corrected in response to the magnitude of the disturbance variations by a gain scheduling unit, and the gain of the feedforward control model is controlled by supplying a correction signal which compares and equalizes, at a feedforward control model gain adaptive unit, the disturbance compensation signal and the manipulated variable obtained by adding the disturbance compensation signal and the feedback signal that is gain-corrected by the gain scheduling unit. The feedforward control model comprises a gain memory for memorizing storing the FF model gain correction signal from the feedforward control model gain adaptive unit and an operational means for receiving a correction signal from the gain memory and a disturbance signal to compute and output a dis…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.