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Overview

The Diagnostics and Prognostics (D&P) group investigates system health management technologies relevant to NASA missions.

Within diagnostics, we are focusing on developing model-based technology for detection, isolation, and identification of discrete and continuous faults. Utilizing a large electric power distribution system that mimics one that one would find on an aircraft or spacecraft, we have benchmarked different diagnosis algorithms performance with hardware-in-the-loop. We have also investigated metrics for diagnostics to compare different diagnostic algorithms.

Within prognostics, we are currently investigating damage detection and propagation mechanisms in various components, such as batteries. Previous work centered on select safety-critical actuators for transport-class aircraft, critical electrical and electronic components in avionics equipment, and valves used in cryogenic fueling operations. Data collected from aging processes is made available to the research community in a public data repository. In addition, we investigate prognostics metrics that will allow a proper comparison of different prognostic approaches. Current work involves extending prognostics approaches to monitoring and predicting safety in the National Airspace System.

Beyond diagnostics and prognostics, we are investigating health management systems, including decision-making algorithms that take system health information into consideration for advanced reconfiguration strategies.

The D&P group is the steward of NASA's Prognostics Center of Excellence, whose mission is to advance state-of-the-art technology development for remaining life estimation and related topics. Please check the PCOE website.

research agenda
Research Activities (click to enlarge)

Members

Group Lead

Matthew Daigle

Deputy Group Lead

Chris Teubert

Group Members

Edward Balaban
Matthew Daigle
Susan Frost
George Gorospe
Chetan Kulkarni
David Nishikawa
Wendy Okolo
Indranil Roychoudhury
Shankar Sankararaman
Adam Sweet
Chris Teubert

Collaborations

Auburn University
Clarkson University
Dell
Georgia Tech
Global Technology
Idaho National Lab
Impact Technologies
Iowa State University
ISO
JPL/Caltech
Montana Tech
Moog
Penn State ARL
Qualtech Systems, Inc.
Ridgetop
Scientific Monitoring, Inc.
Sentient Corporation
Stanford University
Syracuse University
UCLA
University of Connecticut
USAF
University of Maryland
Vanderbilt University

Alumni

Brian Bole
Chris Bond
Jose Celaya
Jonny da Silva
David Garcia
Tolga Kurtoglu
Peter Liu
Ole Mengshoel
Sriram Narasimhan
Bhaskar Saha
Sankalita Saha
Abhinav Saxena
Greg Sonnenfeld

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