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Industrial process control apparatus and method
Assignee: Westinghouse Electric Corp
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Filing: 1982-04-12
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Granted: 1984-12-18
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Expires: 2002-04-12
Abstract
Abstract A control system and method are provided for an industrial process operation, wherein a controller is coupled with a process control member and has a gain that is adjustable in accordance with a predetermined relationship of the controller reference iteration interval and the controller actual execution interval.
Inventors
- 👤 Richard E. Putman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:41
CPC Classifications
F; F23; F23N; F23N3/00; F23N3/02; F23N1/00; F23N1/02; F23N1/022; F23N2223/00; F23N2223/08; F23N2223/34; F23N2223/36; F23N2225/00; F23N2225/02; F23N2235/00; F23N2235/02; F23N2235/04; F23N2237/00; F23N2237/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
98 words
In a control apparatus for an industrial process having an operation control member, and with said control apparatus having a variable task load, the combination of; controller means coupled with the control member and having a predetermined algorithm with a reference controller iteration interval and with an established gain for determining the operation of said industrial process, means for establishing the actual controller execution interval in relation to said task load, means for establishing a ratio of the reference iteration interval and the actual execution interval, and means for changing said gain automatically in response to that ratio.
Claim 2
Dependent Claim
98 words
In a control apparatus for an industrial process having an operation control member, and with said control apparatus having a variable task load, the combination of; controller means coupled with the control member and having a predetermined algorithm with a reference controller iteration interval and with an established gain for determining the operation of said industrial process, means for establishing the actual controller execution interval in relation to said task load, means for establishing a ratio of the reference iteration interval and the actual execution interval, and means for changing said gain automatically in response to that ratio.
Claim 3
Dependent Claim
26 words
The control apparatus of claim 1, with the gain changing means being responsive to an increase in the actual controller execution interval for decreasing the gain.
Claim 4
Dependent Claim
18 words
The control apparatus of claim 1, with said gain being established in relation to said reference iteration interval.
Claim 5
Dependent Claim
29 words
The control apparatus of claim 1, with said gain changing means being operative to change said gain in accordance with variations in the magnitude of said actual iteration interval.
Claim 6
Dependent Claim
71 words
In a method of controlling an industrial process having an operation control member with controller apparatus having a gain and a task load, the steps of establishing a reference controller iteration interval, establishing the actual controller iteration interval in relation to said task load, establishing a predetermined relationship between said reference iteration interval and said actual iteration interval, changing the gain of the controller apparatus automatically in accordance with said relationship.
Claim 7
Dependent Claim
71 words
In a method of controlling an industrial process having an operation control member with controller apparatus having a gain and a task load, the steps of establishing a reference controller iteration interval, establishing the actual controller iteration interval in relation to said task load, establishing a predetermined relationship between said reference iteration interval and said actual iteration interval, changing the gain of the controller apparatus automatically in accordance with said relationship.
Claim 8
Dependent Claim
20 words
The method of claim 5, with said gain changing being provided in accordance with variations in the actual execution interval.
Claim 9
Dependent Claim
19 words
The method of claim 5, with said relationship being the reference iteration interval divided by the actual iteration interval.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-18 | 1988-06-18 | 1988-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-18 | 1992-06-18 | 1992-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-18 | 1996-06-18 | 1996-12-18 | $7700.00 | Window Closed / Lapsed |