See All Resources (468)
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Entropy-based probabilistic fatigue damage prognosis and algorithmic performance comparison
A Publication, Prognostics CoE Publications - 11 years, 7 months ago
Shared By: Miryam Strautkalns
In this paper, a maximum entropy-based general framework for probabilistic fatigue damage prognosis is investigated. The proposed methodology is based on an underlying physics-based crack ...
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Evaluating Algorithm Performance Metrics Tailored for Prognostics
A Publication, Prognostics CoE Publications - 11 years, 7 months ago
Shared By: Miryam Strautkalns
Prognostics has taken center stage in Condition Based Maintenance (CBM) where it is desired to estimate Remaining Useful Life (RUL) of a system so that ...
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Metrics for Evaluating Performance of Prognostic Techniques
A Publication, Prognostics CoE Publications - 11 years, 7 months ago
Shared By: Miryam Strautkalns
Prognostics is an emerging concept in condition basedmaintenance(CBM)ofcriticalsystems.Alongwith developing the fundamentals of being able to confidently predict Remaining Useful Life (RUL), the technology calls for ...
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Modeling Propagation of Gas Path Damage
A Publication, Prognostics CoE Publications - 11 years, 7 months ago
Shared By: Miryam Strautkalns
This paper describes how damage propagation can be tracked and modeled for a range of fault modes in some modules of commercial high bypass aircraft ...
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Model-based Diagnostics for Propellant Loading Systems
A Publication, Prognostics CoE Publications - 11 years, 7 months ago
Shared By: Miryam Strautkalns
The loading of spacecraft propellants is a complex, risky operation. Therefore, diagnostic solutions are neces- sary to quickly identify when a fault occurs, so that ...
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Distributed Damage Estimation for Prognostics based on Structural Model Decomposition
A Publication, Prognostics CoE Publications - 11 years, 7 months ago
Shared By: Miryam Strautkalns
Model-based prognostics approaches capture system knowl- edge in the form of physics-based models of components that include how they fail. These methods consist of a ...
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Improving Distributed Diagnosis Through Structural Model Decomposition
A Publication, Prognostics CoE Publications - 11 years, 7 months ago
Shared By: Miryam Strautkalns
Complex engineering systems require efficient fault diagnosis methodologies, but centralized ap- proaches do not scale well, and this motivates the development of distributed solutions. This ...
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A Publication, Prognostics CoE Publications - 11 years, 7 months ago
Shared By: Miryam Strautkalns
We describe two model-based diagnosis algo- rithms entered into the Third International Diag- nostic Competition. We focus on the first diag- nostic problem of the ...
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Third International Diagnostic Competition
A Publication, Prognostics CoE Publications - 11 years, 7 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 ...
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An Integrated Model-Based Distributed Diagnosis and Prognosis Framework
A Publication, Prognostics CoE Publications - 11 years, 7 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, ...
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A Publication, Prognostics CoE Publications - 11 years, 7 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 ...
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Improving Multiple Fault Diagnosability using Possible Conflicts
A Publication, Prognostics CoE Publications - 11 years, 7 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 ...
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An Integrated Framework for Model-Based Distributed Diagnosis and Prognosis
A Publication, Prognostics CoE Publications - 11 years, 7 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, ...
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A Distributed Approach to System-Level Prognostics
A Publication, Prognostics CoE Publications - 11 years, 7 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 ...
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A Reasoning Architecture for Expert Troubleshooting of Complex Processes
A Publication, Prognostics CoE Publications - 11 years, 7 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 ...