Apparatus and method for predicting windup and improving process control in an industrial process control system
US10203667B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2011 |
| Grant date | Feb 12, 2019 |
| Priority date | — |
| Expiry date | Jun 3, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B5/01
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method includes identifying one of multiple regions in a range where an output (OP) value used to implement a manipulated variable is located. The manipulated variable is associated with an industrial process, and the OP value represents an output of a downstream controller. The method also includes calculating an achievable manipulated variable (MV) limit for the manipulated variable based on the region in which the OP value is located. For example, when the OP value is located in one region, the achievable MV limit could match a user-specified limit or be based on a gain between the OP value and a value of a process variable. When the OP value is located in another region, the achievable MV limit could track the value of the process variable with a gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.