Self Assessment Tool for Intelligent Prognosis (SATIP)

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$70,000.00
Award Year:
2004
Program:
SBIR
Phase:
Phase I
Contract:
N68335-04-C-0094
Agency Tracking Number:
N032-0769
Solicitation Year:
2003
Solicitation Topic Code:
N03-196
Solicitation Number:
2003.2
Small Business Information
ALPHATECH, INC.
6 New England Executive Park, Burlington, MA, 01803
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
094841665
Principal Investigator:
Asif Khalak
Lead Research Engineer
(781) 273-3388
asif.khalak@alphatech.com
Business Contact:
John Barry
Contracts Manager
(781) 273-3388
jbarry@alphatech.com
Research Institution:
n/a
Abstract
ALPHATECH proposes an innovative prognostic and diagnostic reasoning assessment tool for Prognostic Health Management systems. The Self Assessment Tool for Intelligent Prognosis (SATIP) is focused towards prognosis of gradual failures in complex mechanical systems such as fatigue failures, in which prognostics is most beneficial. The goal is to ensure that the prognostic model is used within the limits of its assumptions, and to forgo prognostics when assumptions are violated. Such violations may originate from unexpected conditions such as a manufacturing flaw or battle damage. SATIP quantifies the robustness of the models based on a statistical error analysis of the prognostic and diagnostic models with respect to various sources of uncertainty such as exogenous noise and model mismatch. The resulting confidence estimator may be computed even when the state estimate cannot be computed. Based on the confidence result, SATIP decides upon the relevance of the prognostic estimate as well as the appropriate level of fault isolation. Self assessment is an important first step towards a comprehensive off-line and on-line PHM verification system for complex, mission critical, mechanical systems.

* information listed above is at the time of submission.

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