Apparatus and method for stiction compensation in a process control system
US7797082B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 2006 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | Jun 28, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D7/005
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An apparatus, method, and computer program for stiction compensation in a process control system are provided. A determination is made as to whether a valve is suffering from stiction. A control signal provided to the valve is adjusted in order to at least partially compensate for the stiction suffered by the valve. Adjusting the control signal could include (i) adjusting the control signal to cause the valve to move into a steady-state position and (ii) adjusting the control signal to cause the valve to remain in the steady-state position. Adjusting the control signal to cause the valve to move into the steady-state position could include (a) adjusting the control signal to cause the valve to move from a current position into a new position and (b) adjusting the control signal to cause the valve to move from the new position into the steady-state position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.