Identifying Contributing Factors of Occupant Thermal Discomfort in a Smart Building

A Publication, Sustainability Base - 9 years, 1 month ago

Shared By: RODNEY MARTIN

Modeling occupant behavior in smart buildings to reduce energy usage in a more accurate fashion has garnered much recent attention in the literature. Predicting occupant ...

Scalable Causal Learning for Predicting Adverse Events in Smart Buildings

A Publication, Sustainability Base - 9 years, 1 month ago

Shared By: RODNEY MARTIN

Emerging smart buildings, such as the NASA Sustainability Base (SB), have a broad range of energy-related systems, including systems for heating and cooling. While the ...

Prognostic Health-Management System Development for Electromechanical Actuators

A Publication, FLEA - 9 years, 8 months ago

Shared By: EDWARD BALABAN

Electro-mechanical actuators (EMAs) have been gaining increased acceptance as safety-critical actuation devices in the next generation of aircraft and spacecraft. The aerospace manufacturers are not ...

Energy Analysis of Multi-Function Devices in an Office Environment

A Publication, Sustainability Base - 11 years, 1 month ago

Shared By: RODNEY MARTIN

As part of an effort to monitor electricity usage by plug loads in a new high performance office building, plug load management devices were deployed ...

Third International Diagnostic Competition - DXC'11

A Publication, Third International Diagnostic Competition - 12 years, 7 months ago

Shared By: SCOTT POLL

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 ...

Propulsion Health Monitoring of a Turbine Engine Disk using Spin Test Data

A Publication, Disk Defect Data - 12 years ago

Shared By: Nikunj Oza

On line detection techniques to monitor the health of rotating engine components are becoming increasingly attractive options to aircraft engine companies in order to increase ...

Airborne Electro-Mechanical Actuator Test Stand for Development of Prognostic Health Management Systems

A Publication, FLEA - 14 years, 1 month ago

Shared By: Sriram Narasimhan

With the advent of the next generation of aerospace systems equipped with fly-by-wire controls, electromechanical actuators (EMA) are quickly becoming components critical to safety of ...

Combining Model-Based and Feature-Driven Diagnosis Approaches – A Case Study on Electromechanical Actuators

A Publication, FLEA - 14 years, 1 month ago

Shared By: Sriram Narasimhan

Model-based diagnosis typically uses analytical redundancy to compare predictions from a model against observations from the system being diagnosed. However this approach does not work ...

Empirical Evaluation of Diagnostic Algorithm Performance Using a Generic Framework

A Publication, First International Diagnostic Competition - 14 years, 4 months ago

Shared By: SCOTT POLL

A variety of rule-based, model-based and data-driven techniques have been proposed for detection and isolation of faults in physical systems. However, there have been few ...

First International Diagnosis Competition – DXC’09

A Publication, First International Diagnostic Competition - 14 years, 4 months ago

Shared By: SCOTT POLL

A framework to compare and evaluate diagnosis algorithms (DAs) has been created jointly by NASA Ames Research Center and PARC. In this paper, we present ...

Towards a Framework for Evaluating and Comparing Diagnosis Algorithms

A Publication, First International Diagnostic Competition - 14 years, 4 months ago

Shared By: SCOTT POLL

Diagnostic inference involves the detection of anomalous system behavior and the identification of its cause, possibly down to a failed unit or to a parameter ...