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Federal
Effects of Lightning Injection on Power-MOSFETs
National Aeronautics and Space Administration —
Lightning induced damage is one of the major concerns in aircraft health monitoring. Such short-duration high voltages can cause significant damage to electronic... -
Federal
nu-Anomica: A Fast Support Vector Based Anomaly Detection Technique
National Aeronautics and Space Administration —
In this paper we propose $\nu$-Anomica, a novel anomaly detection technique that can be trained on huge data sets with much reduced running time compared to the... -
Federal
DXC'09 Framework
National Aeronautics and Space Administration —
The DXC Framework is a collection of programs and APIs for running and evaluating diagnostic algorithms (DAs). It is complementary to system XML catalogs and... -
Federal
A Comparison of Three Data-driven Techniques for Prognostics
National Aeronautics and Space Administration —
In situations where the cost/benefit analysis of using physics-based damage propagation algorithms is not favorable and when sufficient test data are available that... -
Federal
Aircraft Proximity Maps Based on Data-Driven Flow Modeling
National Aeronautics and Space Administration —
With the forecast increase in air traffic demand over the next decades, it is imperative to develop tools to provide traffic flow managers with the information... -
Federal
A Comparison of Filter-based Approaches for Model-based Prognostics
National Aeronautics and Space Administration —
Model-based prognostics approaches use domain knowledge about a system and its failure modes through the use of physics-based models. Model-based prognosis is... -
Federal
An Approach to Prognostic Decision Making in the Aerospace Domain
National Aeronautics and Space Administration —
The field of Prognostic Health Management (PHM) has been undergoing rapid growth in recent years, with development of increasingly sophisticated techniques for... -
Federal
A Model-based Avionic Prognostic Reasoner (MAPR)
National Aeronautics and Space Administration —
The Model-based Avionic Prognostic Reasoner (MAPR) presented in this paper is an innovative solution for non-intrusively monitoring the state of health (SoH) and... -
Federal
Prognostics of Power Electronics, methods and validation testbeds
National Aeronautics and Space Administration —
An overview of the current results of prognostics for DC- DC power converters is presented, focusing on the output filter capacitor component. The electrolytic... -
Federal
Estimation and Bias Correction of Aerosol Abundance using Data-driven Machine Learning and Remote Sensing
National Aeronautics and Space Administration —
Abstract—Air quality information is increasingly becoming a public health concern, since some of the aerosol particles pose harmful effects to peoples health. One... -
Federal
Ramakrishnan: Semantics on the Web
National Aeronautics and Space Administration —
It is becoming increasingly clear that the next generation of web search and advertising will rely on a deeper understanding of user intent and task modeling, and a... -
Federal
A DISTRIBUTED PROGNOSTIC HEALTH MANAGEMENT ARCHITECTURE
National Aeronautics and Space Administration —
This paper introduces a generic distributed prognostic health management (PHM) architecture with specific application to the electrical power systems domain. Current... -
Federal
Precursor Parameter Identification for IGBT Prognostics
National Aeronautics and Space Administration —
Precursor parameters have been identified to enable development of a prognostic approach for insulated gate bipolar transistors (IGBT). The IGBT were subjected to... -
Federal
Third International Diagnostic Competition
National Aeronautics and Space Administration —
We present the third implementation of a framework created jointly by NASA Ames Research Center, Palo Alto Research Center, and Delft University of Technology to com-... -
Federal
Optimal Alarm Systems
National Aeronautics and Space Administration —
An optimal alarm system is simply an optimal level-crossing predictor that can be designed to elicit the fewest false alarms for a fixed detection probability. It... -
Federal
Sensing and characterization of EMI during intermittent connector anomalies
National Aeronautics and Space Administration —
This paper presents a new on-line methodology for detecting intermittent disconnection failures. The detection principle operates on the fundamental Lorentz Law that... -
Federal
Pressure Transducer Locations
National Aeronautics and Space Administration —
Files are located here, defining the locations of the pressure transducers on the HIRENASD model. These locations also correspond to the locations that analysts... -
Federal
Predicting Engine Parameters using the Optical Spectrum
National Aeronautics and Space Administration —
The Optical Plume Anomaly Detection (OPAD) system is under development to predict engine anomalies and engine parameters of the Space Shuttle's Main Engine (SSME).... -
Federal
Model Adaptation for Prognostics in a Particle Filtering Framework
National Aeronautics and Space Administration —
One of the key motivating factors for using particle filters for prognostics is the ability to include model parameters as part of the state vector to be estimated....