Improving Multiple Fault Diagnosability using Possible Conflicts

A Publication, Prognostics CoE Publications - 10 years, 3 months ago

Shared By: Matthew Daigle

Multiple fault diagnosis is a difficult problem for dynamic systems. Due to fault masking, compensation, and relative time of fault occurrence, multiple faults can manifest ...

A Comparison of Filter-based Approaches for Model-based Prognostics

A Publication, Prognostics CoE Publications - 10 years, 3 months ago

Shared By: Matthew Daigle

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 generally divided into ...

Improving Diagnosability of Hybrid Systems through Active Diagnosis

A Publication, Prognostics CoE Publications - 10 years, 3 months ago

Shared By: Matthew Daigle

Fault diagnosis is key to ensuring system safety through fault-adaptive control. This task is diffcult in hybrid systems with combined continuous and discrete behaviors because ...

An Event-based Approach to Hybrid Systems Diagnosability

A Publication, Prognostics CoE Publications - 10 years, 3 months ago

Shared By: Matthew Daigle

Diagnosability is an important issue in the design of diagnostic systems, because it helps identify whether sufficient information is available to distinguish all the faults. ...

Dynamical Model of Rocket Propellant Loading with Liquid Hydrogen

A Publication, Prognostics CoE Publications - 10 years, 3 months ago

Shared By: Matthew Daigle

A dynamical model describing the multi-stage process of rocket propellant loading has been developed. It accounts for both the nominal and faulty regimes of cryogenic ...

Model-based Prognostics with Concurrent Damage Progression Processes

A Publication, Prognostics CoE Publications - 10 years, 3 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 - 10 years, 3 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 - 10 years, 3 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 - 10 years, 3 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 - 10 years, 3 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 - 10 years, 3 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 - 10 years, 3 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 - 10 years, 3 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 ...