Fault Management: Degradation Signature Detection, Modeling, and Processing

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$124,794.00
Award Year:
2013
Program:
SBIR
Phase:
Phase I
Contract:
NNX13CM26P
Award Id:
n/a
Agency Tracking Number:
124543
Solicitation Year:
2012
Solicitation Topic Code:
S5.05
Solicitation Number:
n/a
Small Business Information
AZ, Tucson, AZ, 85741-2276
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
Y
Duns:
157955597
Principal Investigator:
James Hofmeister
Distinguished Engineer
(520) 742-3300
jhofmeister@ridgetopgroup.com
Business Contact:
Milena Thompson
VP of Administration
(520) 742-3300
mthompson@ridgetopgroup.com
Research Institution:
Stub




Abstract
Fault to Failure Progression (FFP) signature modeling and processing is a new method for applying condition-based signal data to detect degradation, to identify fault modes, and to produce system estimates for State of Health (SoH) and Remaining Useful Life (RUL). The base technology has been applied for prognostic purposes for various government-sponsored programs, but FFP signature modeling and processing has not been applied for the area of Fault Management, nor does it include such features as fault dictionaries, lookup tables, and management algorithms. The technology includes Ridgetop-designed and developed algorithms to do the following: (1) perform Kalman Filtering to reduce noise; (2) transform sensor signal data to reveal underlying (hidden) FFP signatures; (3) normalize units-of-measure dependent signal data into dimensionless FFP signatures to facilitate re-use and reduce the time to characterize and define new FFP signatures; (4) define and use model definitions that reduce memory requirements and support fast and accurate processing and calculations; (5) two forms of trajectory curve characterization, both straight-line and curvilinear; (6) a fast yet accurate, graphics-based mathematical routine to adapt an FFP model to received data; (7) amplitude and time updates similar to Extended Kalman Filtering to estimate how long it will take an adapted FFP model to reach a defined failure threshold; and (8) produce SoH and RUL estimates that rapidly converge to the estimated time-to-failure (TTF) solution. The FFP signature modeling and processing will include additional innovation to support FM to minimize application-specific programming, those include algorithms to simplify fault identification and isolation.

* information listed above is at the time of submission.

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