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Biography

Since joining NASA Ames Research Center in 2001, I have enjoyed working on combining physics-based modeling methods with optimization and probabilistic inference to develop advanced autonomous health management systems across a variety of disciplines.

Current Projects

2012 - Present. Estimation of safe aircraft maneuverability with uncertain dynamics models.

2008 - 2014. Electromagnetic characterization, physics-based modeling, and probabilistic inference for precursor wiring fault detection.

2010-2012. Vehicle Systems Safety Technologies (VSST) Project, Deputy Project Manager for (DPMf) NASA Ames Research Center.

NASA Affiliations

Physics Based Methods Group
Discovery and Systems Health (DaSH)
Intelligent Systems Division
NASA Ames Research Center

Research Interests

  • Statistical Signal Processing
  • Bayesian Data Analysis
  • Convex Optimization
  • Applied Math and Physics

Education

M.S. Electrical Engineering, Santa Clara University, 2004
B.S. Electrical Engineering, Santa Clara University, 2001

Publications

S. Schuet, D. Timucin, K. Wheeler, “Physics-Based Precursor Wiring Diagnostics for Shielded-Twisted-Pair Cable,” IEEE Transactions on Instrumentation and Measurement, Accepted July, 2014. [IEEE Xplore]

S. Schuet, T. Lombaerts, D. Acosta, K. Wheeler, J. Kaneshige. An Adaptive Nonlinear Aircraft Maneuvering Envelope Estimation Approach for Online Applications (AIAA 2014-0268). In AIAA Guidance, Navigation, and Control Conference, January 2014. [PDF]

T. Lombaerts, S. Schuet, K. Wheeler, D. Acosta, and J. Kaneshige. Robust maneuvering envelope estimation based on reachability analysis in an optimal control formulation. In 2nd International Conference on Control and Fault Tolerant Systems. IEEE, October 2013. [PDF]

V. Hafiychuk, V. Smelyanskiy, D. Timucin, S. Schuet, K. Wheeler, R. Tyson, and J. Walker. Acoustic wave propagation and scattering for fault detection in honeycomb composite panels. In 9th International Workshop on Structural Health Monitoring, September 2013. [PDF]

T. Lombaerts, S. Schuet, K. Wheeler, D. Acosta, and J. Kaneshige. Safe Maneuvering Envelope Estimation based on a Physical Approach (AIAA 2013-4618). In AIAA Guidance, Navagation, and Control Conference, August 2013. [PDF]

D. Timucin, S. Schuet, K. Wheeler, "Detection of chafe faults in shielded-twisted-pair cable," Aircraft Airworthiness and Sustainment Conference, Baltimore MD, April 2-5, 2012.

S. Schuet, D. Timucin, and K. Wheeler. Shielded twisted pair cable model for chafe fault detection via time-domain reflectometry. NASA Technical Report NASA/TM-2012-216001, National Aeronautics and Space Administration, March 2012.
[PDF] [NTRS]

S. Schuet, D. Timucin, K. Wheeler, “A Model-Based Probabilistic Inversion Framework for Wire Fault Detection using TDR,” IEEE Transactions on Instrumentation and Measurement, vol. 60, num. 5, pp 1654-1663, May 2011. [PDF]

S. Schuet, D. Timucin, K. Wheeler, “Modeling and Detecting Wire Faults,” NASA Aviation Safety Program Annual Technical Meeting, St. Louis MO, May 10-12, 2011.

K. Wheeler, D. Timucin, S. Schuet, “Verification of Small Hole Theory for Application To Wire Chafing Resulting in Shield Faults,” Aircraft Airworthiness and Sustainment Conference, San Diego CA, April 18-21, 2011.

S. Schuet, “Wiring Diagnostics via l1-Regularized Least Squares,” Sensors Journal, IEEE, vol.10, no.7, pp.1218-1225, July 2010. [PDF]

D. Timucin, S. Schuet, K. Wheeler, “Electrical Wire Chafe Fault Detection Analysis,” Aircraft Airworthiness and Sustainment Conference, Austin TX, May 10-13, 2010.

S. Schuet, D. Timucin, K. Wheeler, “A Model-Based Probabilistic Inversion Framework for Wire Fault Detection using TDR,” IEEE International Instrumentation and Measurement Technology Conference, Austin TX, May 3-6, 2010.

S. Schuet, K. Wheeler, D. Timucin, M. Kowalski, P. Wysocki, “Model Based Inference for Wire Chafe Diagnosis,” Presented at the Aging Aircraft Conference, May 4-7, 2009. [PDF]

S. Schuet, K. Wheeler, D. Timucin, “Understanding Wire Chafing: Model Development and Optimal Diagnostics Using TDR,” Aviation Safety Technical Conference, October 23, 2008.

J. Lavelle, S. Schuet, “The 3D mapping of stardust’s post flight heat shield,” 46th AIAA Aerospace Sciences Meeting, Reno NV, January 7-10, 2008.

J. Lavelle, S. Schuet, “A hand held, wireless 3D scanning instrument for shuttle tile inspection,” 5th Topical Meeting on Optoelectronic Distance/Displacement Measurements and Applications (ODIMAP V), IEEE LEOS, pp. 222-227, Madrid, Spain, October 2-4, 2006.

M. Bualat, C. Kunz, J. Lavelle, L. Pedersen, S. Schuet, “Scanning laser rangefinder for accurate arm placement and inspection,” 8th International Symposium on Artificial Intelligence, Robotics and Automation in Space (iSAIRAS), Munich, Germany, 2005.

J. Lavelle, S. Schuet, “High speed 3D scanner with real-time 3D processing,” SPIE 9th International Symposium on NDE for Health Monitoring and Diagnostics, San Diego, California, USA, 2004.

Software

Physics Based Wire Fault Detection Toolbox

Patents

2008 United States Patent: 7375826, “High-Speed Three Dimensional Laser Scanner with Real-Time Processing.”

Awards

2010 NASA Group Achievement Award to CEV TPS Advancement Development Project for “outstanding work in support of the CEV Project and for developing the first human-rated ablative heat-shield in 40 years.”

2009 NASA Certificate of Recognition “in appreciation for Federal Laboratory Consortium for Technology Transfer 2009 Interagency Partnership Award: NASA High-Speed 3D Scanner.”

2009 R&D Magazine Top 100 Award for the “NASA High-Speed 3D Scanner.”

2008 NASA Government Invention of the Year Award for the NASA High-Speed 3D Scanner, “the 3D Laser Scanner surface scanning and profiling technology was developed for critical, real time inspection of damage to the thermal protection tiles of space shuttle. It is small, lightweight, and power efficient.”

2008 NASA Ames Certificate of Recognition “for the creative development of exceptional scientific and technical contributions which have been determined to be of significant value in the advancement of the aerospace technology program of NASA.”

2008 Major Space Act Board Award for the 3D Laser Scanner

2007 NASA Ames Honor for Excellence in the Engineer Category Award

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Email:
stefan.r.schuet at nasa dot gov

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