Model-based Prognostics with Concurrent Damage Progression Processes

A Publication, Prognostics CoE Publications - 11 years, 2 months ago

Shared By: Matthew Daigle

Model-based prognostics approaches rely on physics-based models that describe the behavior of systems and their components. These models must account for the several different damage ...

Temperature Stratification in a Cryogenic Fuel Tank

A Publication, Prognostics CoE Publications - 11 years, 2 months ago

Shared By: Matthew Daigle

A reduced dynamical model describing temperature stratification effects driven by natural convection in a liquid hydrogen cryogenic fuel tank has been developed. It accounts for ...

Development of a Mobile Robot Test Platform and Methods for Validation of Prognostics-Enabled Decision Making ...

A Publication, EDWARD BALABAN's Collection - 11 years, 2 months ago

Shared By: EDWARD BALABAN

As fault diagnosis and prognosis systems in aerospace applications become more capable, the ability to utilize information supplied by them becomes increasingly important. While certain ...

A Modeling Framework for Prognostic Decision Making and its Application to UAV Mission Planning

A Publication, EDWARD BALABAN's Collection - 11 years, 2 months ago

Shared By: EDWARD BALABAN

The goal of prognostic decision making (PDM) is to utilize information on anticipated system health changes in selecting future actions. One of the key challenges ...

Sensing and characterization of EMI during intermittent connector anomalies

A Publication, EDWARD BALABAN's Collection - 11 years, 2 months ago

Shared By: EDWARD BALABAN

This paper presents a new on-line methodology for detecting intermittent disconnection failures. The detection principle operates on the fundamental Lorentz Law that states that sudden ...

An Approach to Prognostic Decision Making in the Aerospace Domain

A Publication, EDWARD BALABAN's Collection - 11 years, 2 months ago

Shared By: EDWARD BALABAN

The field of Prognostic Health Management (PHM) has been undergoing rapid growth in recent years, with development of increasingly sophisticated techniques for diagnosing faults in ...

On-line intermittent connector anomaly detection

A Publication, EDWARD BALABAN's Collection - 11 years, 2 months ago

Shared By: EDWARD BALABAN

This paper investigates a non-traditional use of differential current sensor and current sensor to detect intermittent disconnection problems in connectors. An intermittent disconnect, often resulting ...

A Model-based Avionic Prognostic Reasoner (MAPR)

A Publication, EDWARD BALABAN's Collection - 11 years, 2 months ago

Shared By: EDWARD BALABAN

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 predicting the ...

Battery Charge Depletion Prediction on an Electric Aircraft

A Publication, Brian Bole's Collection - 11 years, 2 months ago

Shared By: Brian Bole

Validation of prognostic technologies through ground and flight tests is an important step in maturing these novel technologies and deploying them on real-world systems. To ...

Propulsion IVHM Technology Experiment Overview

A Publication, EDWARD BALABAN's Collection - 11 years, 2 months ago

Shared By: EDWARD BALABAN

NASA researchers recently demonstrated successful real-time fault detection and isolation of a virtual reusable launch vehicle main propulsion system. Using a detailed simulation of a ...

Replication of Electric Aircraft Powertrain Dynamics and Inner-Loop Control for V&V of System Health Management ...

A Publication, Brian Bole's Collection - 11 years, 2 months ago

Shared By: Brian Bole

Software-in-the-loop and hardware-in-the-loop testing of failure prognostics and decision making tools for aircraft systems will facilitate more comprehensive and cost-effective testing than what is practical ...

Removing Spikes While Preserving Data and Noise using Wavelet Filter Banks

A Publication, Prognostics CoE Publications - 11 years, 2 months ago

Shared By: SCOTT POLL

Many diagnostic datasets suffer from the adverse effects of spikes that are embedded in data and noise. For example, this is true for electrical power ...

New Sensing Application to Diagnose Power Semiconductor Aging in Actuator Power Drive Systems

A Publication, Prognostics CoE Publications - 11 years, 2 months ago

Shared By: SCOTT POLL

This paper presents a new sensing application to diagnose power semiconductor aging in power drive systems. It has been shown previously that device parasitic characteristics ...

Estimation of Faults in DC Electrical Power System

A Publication, Prognostics CoE Publications - 11 years, 2 months ago

Shared By: SCOTT POLL

This paper demonstrates a novel optimizationbased approach to estimating fault states in a DC power system. The model includes faults changing the circuit topology along ...