Demonstrating Autonomous Mission Operations Onboard the International Space Station

A Publication, DAVID IVERSON's Collection - 8 years, 11 months ago

Shared By: DAVID IVERSON

The NASA Autonomous Mission Operations (AMO) project conducted an experiment to turn over operation and management of selected International Space Station (ISS) systems to the ...

Discovery of Precursors to Adverse Events using Time Series Data

A Publication, Discovering Precursors to Adverse Events in Time Series - 8 years, 8 months ago

Shared By: Vijay Manikandan Janakiraman

We develop an algorithm for automatic discovery of precursors in time series data (ADOPT). In a time series setting, a precursor may be considered as ...

Comparative Study of Metroplex Airspace and Procedures Using Machine Learning to Discover Flight Track Anomalies

A Publication, Bryan Matthews's Collection - 8 years, 11 months ago

Shared By: Bryan Matthews

The National Airspace (NAS) is constantly changing and adapting to new and complex challenges, and as a result Next Generation Air Transportation System (NextGen) will ...

anomaly detection aviation safety metroplex svm pdars

Identifying Precursors to Anomalies Using Inverse Reinforcement Learning

A Publication, Discovering Precursors to Adverse Events in Time Series - 8 years, 11 months ago

Shared By: Vijay Manikandan Janakiraman

In this paper, we consider the problem of discovering candidate precursors to anomalies in a set of time sequenced data. Typical scenarios involving time sequential ...

Identifying Contributing Factors of Occupant Thermal Discomfort in a Smart Building

A Publication, Sustainability Base - 9 years 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 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 Techniques for Capacitor Degradation and Health Monitoring

A Publication, Chetan Kulkarni's Collection - 9 years ago

Shared By: Chetan Kulkarni

This paper discusses our initial efforts in constructing physics of failure models for electrolytic capacitors subjected to electrical stressors in DC-DC power converters. Electrolytic capacitors ...

Integrated Diagnostic/Prognostic Experimental Setup for Capacitor Degradation and Health Monitoring

A Publication, Chetan Kulkarni's Collection - 9 years ago

Shared By: Chetan Kulkarni

This paper proposes the experiments and setups for studying diagnosis and prognosis of electrolytic capacitors in DC-DC power converters. Electrolytic capacitors and power MOSFET’s have ...

DIAGNOSTIC/PROGNOSTIC EXPERIMENTS FOR CAPACITOR DEGRADATION AND HEALTH MONITORING IN DC-DC CONVERTERS

A Publication, Chetan Kulkarni's Collection - 9 years ago

Shared By: Chetan Kulkarni

Studying and analyzing the ageing mechanisms of electronic components avionics in systems such as the GPS and INAV are of critical importance. In DC-DC power ...

Implementation of Prognostic Methodologies to Cryogenic Propellant Loading Test-bed

A Publication, Chetan Kulkarni's Collection - 9 years ago

Shared By: Chetan Kulkarni

Prognostics methodologies determine the health state of a system and predict the end of life and remaining useful life. This information enables operators to take ...

Physics based Degradation Modeling and Prognostics of Electrolytic Capacitors under Electrical Overstress Conditions

A Publication, Chetan Kulkarni's Collection - 9 years ago

Shared By: Chetan Kulkarni

This paper proposes a physics based degradation modeling and prognostics approach for electrolytic capacitors. Electrolytic capacitors are critical components in electronics systems in aeronautics and ...

A Testbed for Implementing Prognostic Methodologies on Cryogenic Propellant Loading Systems

A Publication, Chetan Kulkarni's Collection - 9 years ago

Shared By: Chetan Kulkarni

Prognostics technologies determine the health state of a system and predict its remaining useful life. With this information, operators are able to make maintenance-related decisions, ...

Application of Model Based Prognostics to Pneumatic Valves in a Cryogenic Propellant Loading Testbed

A Publication, Chetan Kulkarni's Collection - 9 years ago

Shared By: Chetan Kulkarni

Pneumatic-actuated valves are critical components in many applications, including cryogenic propellant loading for space operations. For these components, failures need to be predicted so that ...

A Recursive Receding Horizon Planning for Unmanned Vehicles

A Publication, Prognostics CoE Publications - 9 years, 2 months ago

Shared By: Kai Goebel

This paper proposes a recursive receding horizon path planning algorithm for unmanned vehicles in nonuniform environments. In the proposed algorithm, the map is described by ...