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 ...

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 ...

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 ...

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 ...

Qualitative Event-based Diagnosis with Possible Conflicts: Case Study on the Third International Diagnostic Competition

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 ...

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 ...

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, ...

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

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 ...

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 ...