Third International Diagnostic Competition

A Publication, Prognostics CoE Publications - 11 years, 8 months ago

Shared By: Miryam Strautkalns

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 ...

An Integrated Model-Based Distributed Diagnosis and Prognosis Framework

A Publication, Prognostics CoE Publications - 11 years, 8 months ago

Shared By: Miryam Strautkalns

Diagnosis and prognosis are necessary tasks for system reconfiguration and fault-adaptive control in complex systems. Diagnosis consists of detec- tion, isolation and identification of faults, ...

Qualitative Event-based Diagnosis with Possible Conflicts Applied to Spacecraft Power Distribution Systems

A Publication, Prognostics CoE Publications - 11 years, 8 months ago

Shared By: Miryam Strautkalns

Model-based diagnosis enables efficient and safe operation of engineered systems. In this paper, we describe two algorithms based on a qualitative event-based fault isolation framework ...

Improving Multiple Fault Diagnosability using Possible Conflicts

A Publication, Prognostics CoE Publications - 11 years, 8 months ago

Shared By: Miryam Strautkalns

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 ...

An Integrated Framework for Model-Based Distributed Diagnosis and Prognosis

A Publication, Prognostics CoE Publications - 11 years, 8 months ago

Shared By: Miryam Strautkalns

Diagnosis and prognosis are necessary tasks for system re- configuration and fault-adaptive control in complex systems. Diagnosis consists of detection, isolation and identification of faults, ...

A Distributed Approach to System-Level Prognostics

A Publication, Prognostics CoE Publications - 11 years, 8 months ago

Shared By: Miryam Strautkalns

Prognostics, which deals with predicting remaining useful life of components, subsystems, and systems, is a key tech- nology for systems health management that leads to ...

A Reasoning Architecture for Expert Troubleshooting of Complex Processes

A Publication, Prognostics CoE Publications - 11 years, 8 months ago

Shared By: Miryam Strautkalns

This paper introduces a novel reasoning methodology, in combination with appropriate models and measurements (data) to perform accurately and expeditiously expert troubleshooting for complex military ...

Prognostics of Power MOSFETs under Thermal Stress Accelerated Aging using Data-Driven and Model-Based Methodologies

A Publication, Prognostics CoE Publications - 11 years, 8 months ago

Shared By: Miryam Strautkalns

An approach for predicting remaining useful life of power MOSFETs (metal oxide field effect transistor) devices has been developed. Power MOSFETs are semiconductor switching devices ...

Distributed Diagnosis in Uncertain Environments Using Dynamic Bayesian Networks

A Publication, Prognostics CoE Publications - 11 years, 8 months ago

Shared By: Miryam Strautkalns

This paper presents a distributed Bayesian fault diagnosis scheme for physical systems. Our diagnoser design is based on a procedure for factoring the global system ...

An Integrated Model-Based Diagnostic and Prognostic Framework

A Publication, Prognostics CoE Publications - 11 years, 8 months ago

Shared By: Miryam Strautkalns

Systems health monitoring is essential in guar- anteeing the safe, efficient, and correct opera- tion of complex engineered systems. Diagnosis, which consists of detection, isolation ...

A Structural Model Decomposition Framework for Systems Health Management

A Publication, Prognostics CoE Publications - 11 years, 8 months ago

Shared By: Miryam Strautkalns

Systems health management (SHM) is an impor- tant set of technologies aimed at increasing system safety and reliability by detecting, isolating, and identifying faults; and ...

Model-Based Diagnosis and Prognosis of a Water Recycling System

A Publication, Prognostics CoE Publications - 11 years, 8 months ago

Shared By: Miryam Strautkalns

A water recycling system (WRS) deployed at NASA Ames Research Center’s Sustainability Base (an energy efficient office building that integrates some novel technologies developed for ...

Accelerated Aging in Electrolytic Capacitors for Prognostics

A Publication, Prognostics CoE Publications - 11 years, 9 months ago

Shared By: Miryam Strautkalns

The focus of this work is the analysis of different degradation phenomena based on thermal overstress and electrical overstress accelerated aging systems and the use ...

Physics Based Electrolytic Capacitor Degradation Models for Prognostic Studies under Thermal Overstress

A Publication, Prognostics CoE Publications - 11 years, 9 months ago

Shared By: Miryam Strautkalns

Electrolytic capacitors are used in several applications rang- ing from power supplies on safety critical avionics equipment to power drivers for electro-mechanical actuators. This makes ...