Method and apparatus for controlling a fluid flow valve
US5304093A · kind A · utility
25Cited by
4References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1992 |
| Grant date | Apr 19, 1994 |
| Priority date | — |
| Expiry date | Jan 17, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D7/0635
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method and apparatus for controlling a fluid flow valve with a linear control loop such that the error signal utilized to actuate a variable rate controller for moving a valve control element or for controlling another valve control parameter is the same for a given control parameter change regardless of the current control parameter value or the current or desired fluid flow through the valve. A non-delayed indication of current fluid flow is also generated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.