Patent US4937763A successfully refreshed from Google Patents.
US4937763A
Expired / Lapsed
US
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Method of system state analysis
Assignee: Halliburton Nus Corp
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Filing: 1988-09-06
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Granted: 1990-06-26
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Expires: 2008-09-06
Abstract
Abstract A process for monitoring a system by comparing learned observations acquired when the system is running in an acceptable state with current observations acquired at periodic intervals thereafter to determine if the process is currently running in an acceptable state. The process enables an operator to determine whether or not a system parameter measurement indicated as outside preset prediction limits is in fact an invalid signal resulting from faulty instrumentation. The process also enables an operator to identify signals which are trending toward malfunction prior to an adverse impact on the overall process.
Inventors
- 👤 Jack E. Mott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:43
CPC Classifications
G; G08; G08B; G08B23/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
164 words
In a multi-variable process, a method for controlling the process within predetermined process parameters, comprising the steps of: a. capturing and recording a range of valid examples of a plurality of process variables when the process is running in an acceptable condition, and determining the pattern overlap of all pairs of such examples; b. periodically acquiring current observations of the process variables and determining the pattern overlap of each such current observation of each of the examples of step a; c. obtaining an operator from the pattern overlap of step a and applying it to the pattern overlap of step b to produce an adaptive linear combination of said examples; d. comparing the current observations to the linear combination of step c to determine the validity of the current observation; and e. indicating the results of step d to enable a determination to be made whether the current observation indicates the process to be operating within the range of valid examples of step a.
Claim 2
Dependent Claim
164 words
In a multi-variable process, a method for controlling the process within predetermined process parameters, comprising the steps of: a. capturing and recording a range of valid examples of a plurality of process variables when the process is running in an acceptable condition, and determining the pattern overlap of all pairs of such examples; b. periodically acquiring current observations of the process variables and determining the pattern overlap of each such current observation of each of the examples of step a; c. obtaining an operator from the pattern overlap of step a and applying it to the pattern overlap of step b to produce an adaptive linear combination of said examples; d. comparing the current observations to the linear combination of step c to determine the validity of the current observation; and e. indicating the results of step d to enable a determination to be made whether the current observation indicates the process to be operating within the range of valid examples of step a.
Claim 3
Dependent Claim
188 words
In a multi-variable process, a method of controlling the process within predetermined process parameters, comprising the steps of: a. capturing and recording a range of valid examples of a plurality of process variables when the process is running in an acceptable condition, and determining the pattern overlap of all pairs of such examples; b. periodically acquiring current observations of the process variables and determining the pattern overlap of each such current observation of each of the examples of step a; c. obtaining an operator from the pattern overlap of step a and applying it to the pattern overlap of step b to produce an adaptive linear combination of said examples; d. comparing the current observations to the linear combination of step c to determine the validity of the current observation; e. indicating the results of step d to enable a determination to be made whether the current observation indicates the process to be operating within the range of valid examples of step a; and f. indicating the results of step e. to enable a determination to be made whether the current observations contain valid examples of process variables.
Claim 4
Dependent Claim
188 words
In a multi-variable process, a method of controlling the process within predetermined process parameters, comprising the steps of: a. capturing and recording a range of valid examples of a plurality of process variables when the process is running in an acceptable condition, and determining the pattern overlap of all pairs of such examples; b. periodically acquiring current observations of the process variables and determining the pattern overlap of each such current observation of each of the examples of step a; c. obtaining an operator from the pattern overlap of step a and applying it to the pattern overlap of step b to produce an adaptive linear combination of said examples; d. comparing the current observations to the linear combination of step c to determine the validity of the current observation; e. indicating the results of step d to enable a determination to be made whether the current observation indicates the process to be operating within the range of valid examples of step a; and f. indicating the results of step e. to enable a determination to be made whether the current observations contain valid examples of process variables.
Claim 5
Dependent Claim
76 words
In a multi-variable process, a method for controlling the process within predetermined process parameters, comprising the steps of: a. capturing and recording a range of valid examples of process variables as learned observations; b. deriving an operator from the learned observations and applying it to current observations to produce an adaptive linear combination of learned observations; and c. comparing the current observations to the combination of learned observations to determine the validity of the current observations.
Claim 6
Dependent Claim
76 words
In a multi-variable process, a method for controlling the process within predetermined process parameters, comprising the steps of: a. capturing and recording a range of valid examples of process variables as learned observations; b. deriving an operator from the learned observations and applying it to current observations to produce an adaptive linear combination of learned observations; and c. comparing the current observations to the combination of learned observations to determine the validity of the current observations.
Claim 7
Dependent Claim
42 words
The method as recited in claim 3, further comprising indicating the results of step c to enable a determination to be made whether the current observation indicates the process and particular process variable to be operating within the range of valid examples.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-25 | 1993-12-25 | 1994-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-25 | 1997-12-25 | 1998-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-25 | 2001-12-25 | 2002-06-26 | $7700.00 | Window Closed / Lapsed |