Predictive and self-tuning PI control apparatus for expanded process control applications
US6751510B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2001 |
| Grant date | Jun 15, 2004 |
| Priority date | — |
| Expiry date | Nov 8, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B13/042
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A predictive and self-tuning PI controller includes an apparatus for variably assigning gains thereto in accordance with specified time functions following a change in set-point. The control gains are computed in accordance with a plurality of input parameters and subsequently continuously adjusted to set-point errors based on a GPC approach thereby to optimize performance indices derived from simple and classical user specifications. Variation and tuning of control gains in accordance with set-point errors permits the PI controller to be useful in the general area of process control and applicable to a wider range of processes compared to traditional PI control, including time-delay processes, unstable processes and processes with time-varying dynamics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.