Title:
METHOD AND APPARATUS FOR MULTIPLE-INPUT-MULTIPLE-OUTPUT OF A VALVE/ACTUATOR PLANT
Document Type and Number:
WIPO Patent Application WO2002059487
Kind Code:
A3
Abstract:
A method and apparatus for controlling a valve/actuator plant (17) by generating a plurality of independent correcting control signals each (15) responsive to a plurality of respective input signals and at least one of these input signals being the set point signal (54). The plurality of independent correcting control signals includes a pneumatic flow signal. The correcting control signals may be derived from all linear control signals, all non-linear control signals, or a combination of linear control signals and non-linear control signals.
Inventors:
WINKLER RICHARD J
Application Number:
PCT/US2002/001441
Publication Date:
November 14, 2002
Filing Date:
January 17, 2002
Export Citation:
Assignee:
FISHER CONTROLS INT (US)
International Classes:
F15B9/09; G05B11/32; (IPC1-7): F15B9/09
Foreign References:
| US5947086A | 1999-09-07 | |||
| EP0875811A2 | 1998-11-04 | |||
| EP0604149A2 | 1994-06-29 | |||
| US5806805A | 1998-09-15 | |||
| US5433079A | 1995-07-18 | |||
| US6115660A | 2000-09-05 |
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