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Welcome to the home page of Sriram Narasimhan. I am an employee of University of California Santa Cruz, working as a contractor at NASA Ames Research Center as part of the UARC program. At NASA I am in the Prognostics and Diagnostics group in the Discovery and Systems Health area in the Intelligent Systems division.

I am technical lead for the Hybrid Diagnosis Engine (HyDE) project which deals with the development of a diagnosis engine that can handle hybrid and stochastic behavior. Please visit the HyDE webpage for more details.

Publications


Journal Publications (PCoE Primary)

  1. Development of a Mobile Robot Test Platform and Methods for Validation of Prognostics-Enabled Decision Making Algorithms
    E. Balaban, S. Narasimhan, M. Daigle, I. Roychoudhury, A. Sweet, C. Bond, and G. Gorospe, International Journal of Prognostics and Health Management, Vol. 4 No. 1, 2013. abstract| pdf
  2. ModelBased Diagnosis of Hybrid Systems
    S. Narasimhan and G. Biswas, IEEE Transactions on Systems, Man, and Cybernetics, Part A : Systems, Vol. 37 No. 3, 348 -361, 2007. abstract| pdf


Journal Publications (PCoE Co-Author)

  1. Empirical Evaluation of Diagnostic Algorithm Performance Using a Generic Framework
    A. Feldman, T. Kurtoglu, S. Narasimhan, S. Poll, D. Garcia, J. de Kleer, L. Kuhn, and A. van Gemund, International Journal of Prognostics and Health Management, Vol. 1 No. 2, 2010. abstract| pdf


Book Chapters (PCoE Primary)

  1. Diagnosis
    A. Patterson-Hine, G. Aaseng, G. Biswas, S. Narasimhan, and K. Pattipati, System Health Management, with Aerospace Applications; Eds: S. Johnson, T. Gormley, S. Kessler, C. Mott, A. Patterson-Hine, K. Reichard, P. Scandura Jr.; J. Wiley, 265-280, 2011. abstract| pdf


Book Chapters (PCoE Co-Author)

  1. G. Karsai, G. Biswas, S. Narasimhan, T. Szemethy, G. Peceli, G. Simon, and T. Kovacshazy, Software- Enabled Control: Information Technologies for Dynamical Systems, 347-368, 2003. abstract| pdf


Conference Papers (PCoE Primary)

  1. Fourth International Diagnostic Competition - DXC'13
    A. Sweet, A. Feldman, S. Narasimhan, M. Daigle, and S. Poll, Proceedings of the 24th International Workshop on Principles of Diagnosis, Jerusalem, Israel, October 2013. abstract| pdf
  2. Integrating Planning, Execution and Diagnosis to Enable Autonomous Mission Operations
    J. Frank, G. Aaseng, M. Dalal, C. Fry, C. Lee, R. McCann, S. Narasimhan, L. Spirkovska, K. Swanson, L. Wang, A. Molin, and L. Garner, Proceedings of 7th Scheduling and Planning Applications woRKshop (SPARK), Rome, Italy, 2013. abstract| pdf
  3. Autonomous Decision Making for Planetary Rovers Using Diagnostic and Prognostic Information
    S. Narasimhan, E. Balaban, M. Daigle, I. Roychoudhury, A. Sweet, J. Celaya, and K. Goebel, Proceedings of the 8th IFAC Symposium on Fault Detection, Supervision and Safety of Technical Processes, Mexico City, Mexico, August 2012. abstract| pdf
  4. Advanced Caution and Warning System for Simulated Fluid Transfer Subsystem of a Deep Space Habitat
    Sriram Narasimhan, Ramon Gonzalez, Liljana Spirkovska, Robert McCann, Jeremy Frank, and Charles Lee, Proceedings of the 23rd International Workshop on Principles of Diagnosis, Great Malvern, UK, July 2012. abstract| pdf
  5. Experimental Validation of a Prognostic Health Management System for Electro-Mechanical Actuators
    E. Balaban, A. Saxena, S. Narasimhan, I. Roychoudhury, and K. Goebel, Proceedings of AIAA Infotech@Aerospace Conference, St. Louis, MO, March 2011. abstract| pdf
  6. A Mobile Robot Testbed for Prognostics-Enabled Autonomous Decision Making
    E. Balaban, S. Narasimhan, M. Daigle, J. Celaya, I. Roychoudhury, B. Saha, S. Saha, and K. Goebel, Proceedings of Annual Conference of the Prognostics and Health Management Society, Montreal, Canada, September 2011. abstract| pdf
  7. Investigating the Effect of Damage Progression Model Choice on Prognostics Performance
    M. Daigle, I. Roychoudhury, S. Narasimhan, S. Saha, B. Saha, and K. Goebel, Proceedings of Annual Conference of the Prognostics and Health Management Society, Montreal, Canada, 323-333, September 2011. abstract| pdf
  8. Third International Diagnostic Competition - DXC'11
    S. Poll, J. de Kleer, R. Abreau, M. Daigle, A. Feldman, D. Garcia, A. Gonzalez-Sanchez, T. Kurtoglu, S. Narasimhan, and A. Sweet, Proceedings of the 22nd International Workshop on Principles of Diagnosis, Murnau, Germany, October 2011. abstract| pdf
  9. Airborne Electro-Mechanical Actuator Test Stand for Development of Prognostic Health Management Systems
    E. Balaban, A. Saxena, S. Narasimhan, I. Roychoudhury, K. F. Goebel, and M. T. Koopmans, Proceedings of Annual Conference of the Prognostics and Health Management Society, Portland, OR, October 2010. abstract| pdf
  10. Combining Model-Based and Feature-Driven Diagnosis Approaches - A Case Study on Electromechanical Actuators
    S. Narasimhan, I. Roychoudhury, E. Balaban, and A. Saxena, Proceedings of the 21st International Workshop on Principles of Diagnosis, Portland, OR, October 2010. abstract| pdf
  11. Second International Diagnostic Competition - DXC'10
    S. Poll, J. de Kleer, A. Feldman, D. Garcia, T. Kurtoglu, and S. Narasimhan, Proceedings of the 21st International Workshop on Principles of Diagnosis, Portland, OR, 355-369, October 2010. abstract| pdf
  12. Benchmarking Diagnostic Algorithms on an Electrical Power System Testbed
    T. Kurtoglu, S. Narasimhan, S. Poll, D. Garcia, and S. Wright, Proceedings of Annual Conference of the Prognostics and Health Management Society, San Diego, CA, September 2009. abstract| pdf
  13. Towards a Framework for Evaluating and Comparing Diagnosis Algorithms
    T. Kurtoglu, S. Narasimhan, S. Poll, D. Garcia, L. Kuhn, J. de Kleer, A. van Gemund, and A. Feldman, Proceedings of the 20th International Workshop on Principles of Diagnosis, Stockholm, Sweden, 373-381, June 2009. abstract| pdf
  14. First International Diagnosis Competition - DXC'09
    T. Kurtoglu, S. Narasimhan, S. Poll, D. Garcia, L. Kuhn, J. de Kleer, A. van Gemund, and A. Feldman, Proceedings of the 20th International Workshop on Principles of Diagnosis, Stockholm, Sweden, 383-396, June 2009. abstract| pdf
  15. Applying Model-based Diagnosis to a Rapid Propellant Loading System
    C. Goodrich, S. Narasimhan, M. Daigle, W. Hatfield, R. Johnson, and B. Brown, Proceedings of the 20th International Workshop on Principles of Diagnosis, Stockholm, Sweden, 147-154, June 2009. abstract| pdf
  16. Applying ModelBased Diagnosis to a Rapid Propellant Loading System
    C. Goodrich, W. Hatfield, R. Johnson, S. Narasimhan, M. Daigle, and B. Brown, Proceedings of Commercial and Government Access to Space Technology Exchange, 2009. abstract| pdf
  17. Using Bayesian Networks for Candidate Generation in Consistency-base Diagnosis
    S. Narasimhan and O. Mengshoel, Proceedings of the 19th International Workshop on Principles of Diagnosis, Blue Mountains, New South Wales, Australia, 307-314, October 2008. abstract| pdf
  18. Model-Based Fault Detection and Diagnosis System for NASA Mars Subsurface Drill Prototype
    E. Balaban, H. N. Cannon, S. Narasimhan, and L. Brownston, Proceedings of IEEE Aerospace Conference, Big Sky, MT, 1-13, March 2007. abstract| pdf
  19. HyDE - A General Framework for Stochastic and Hybrid Modelbased Diagnosis
    S. Narasimhan and L. Brownston, Proceedings of the 28th International Workshop on Principles of Diagnosis, Nashville, TN, 162-169, May 2007. abstract| pdf
  20. Automated Diagnosis of Physical Systems
    S. Narasimhan, Proceedings of International Conference on Accelerator and Large Experimental Physics Control Systems (Invited Talk) (ICALEPCS), Knoxville, TN, 701-705, 2007. abstract| pdf
  21. Modular architecture for hybrid diagnostic reasoners
    H. G. Park, A. Barrett, E. Baumann, M. Grage, and S. Narasimhan, Proceedings of the Second IEEE International Conference on Space Mission Challenges for Information Technology (SMC-IT), Pasadena, CA, 277-284, 2006. abstract| pdf
  22. A Review of Diagnostic Techniques for ISHM Applications
    A. Patterson-Hine, G. Aaseng, G. Biswas, S. Narasimhan, and K. Pattipati, Proceedings of the First International Forum on Integrated System Health Engineering and Management in Aerospace (ISHEM), Napa Valley, CA, 2005. abstract| pdf
  23. An Extension to the Kalman filter for an Improved Detection of Unknown Behavior
    E. Benazera and S. Narasimhan, Proceedings of American Control Conference (ACC), Portland, OR, 2005. abstract| pdf
  24. Combining Particle Filters and Consistency Based Approaches for Monitoring and Diagnosis of Stochastic Hybrid Systems
    S. Narasimhan, R. Dearden, and E. Benazera, Proceedings of the 15th International Workshop on Principles of Diagnosis, Carcassonne, France, 123-128, 2004. abstract| pdf
  25. Explanation Constraint Programming for Model-based Diagnosis of Engineered Systems
    S. Narasimhan, L. Brownston, and D. Burrows, Proceedings of IEEE Aerospace Conference, Big Sky, MT, 3495-3501, March 2004. abstract| pdf
  26. Model-based Diagnosis of Hybrid Systems
    S. Narasimhan and G. Biswas, Proceedings of the 18th International Joint Conference on Artificial Intelligence , Acapulco, Mexico, 376-381, August 2003. abstract| pdf
  27. Hybrid Modeling and Diagnosis in the Real World: A Case Study
    S. Narasimhan, G. Biswas, G. Karsai, T. Szemethy, T. Bowman, M. Kay, and K. Keller, Proceedings of the 13th International Workshop on Principles of Diagnosis, Semmering, Austria, 2002. abstract| pdf
  28. An Approach to Model-Based Diagnosis of Hybrid Systems
    S. Narasimhan and G. Biswas, Proceedings of Hybrid Systems: Computation and Control, Fifth Intl. Workshop (HSCC), Stanford, CA, 308-322, 2002. abstract| pdf
  29. Efficient Diagnosis of Hybrid Systems using Model of the Supervisory Controller
    S. Narasimhan and G. Biswas, Proceedings of the 12th International Workshop on Principles of Diagnosis, Sansicario, Italy, 127-134, 2001. abstract| pdf
  30. An Integrated Approach to Diagnosis of Complex Hybrid Systems
    S. Narasimhan, G. Biswas, and G. Karsai, Proceedings of the 15th Annual Intl. Symposium on AeroSense (Component and Systems Diagnostics, Prognosis, and Health Management) (SPIE), Orlando, FL, 2001. abstract| pdf
  31. An Integrated Framework for Combining Global and Local Analysis in Diagnosing Hybrid Systems
    S. Narasimhan, F. Zhao, G. Biswas, and E. Hung, Proceedings of the 11th International Workshop on Principles of Diagnosis, Moralia, México, 163-170, 2000. abstract| pdf
  32. Fault Isolation in Hybrid Systems Combining Model-based Diagnosis and Signal Processing
    S. Narasimhan, F. Zhao, G. Biswas, and E. Hung, Proceedings of the 4th IFAC Symposium on Fault Detection, Supervision and Safety of Technical Processes, Budapest, Hungary, June 2000. abstract| pdf
  33. Building Observers to Handle Fault Isolation and Control Problems in Hybrid Systems
    S. Narasimhan, G. Biswas, G. Karsai, T. Pasternak, and F. Zhao, Proceedings of IEEE Intl. Conference on Systems, Man, and Cybernetics, Nashville, TN, 2393-2398, 2000. abstract| pdf
  34. A Systematic Analysis of Measurement Selection Algorithms for Fault Isolation in Dynamic Systems
    S. Narasimhan, P. J. Mosterman, and G. Biswas, Proceedings of the 9th International Workshop on Principles of Diagnosis, Cape Cod, MA, 94-101, 1998. abstract| pdf


Conference Papers (PCoE Co-Author)

  1. An Efficient Model-based Diagnosis Engine for Hybrid Systems using Structural Model Decomposition
    A. Bregon, S. Narasimhan, I. Roychoudhury, M. Daigle, B, and Pulido, Proceedings of Annual Conference of the Prognostics and Health Management Society, New Orleans, LA, 312-324, October 2013. abstract| pdf
  2. FalconSAT-6 Electrical Power Subsystem Diagnostics
    Adams, Richard, Lichter, Matthew, Reilly, J., Narasimhan, Sriram, Zetocha, and Paul, Proceedings of AIAA Infotech@Aerospace Conference, Garden Grove, CA, June 2012. abstract| pdf
  3. A Robust Method for Hybrid Diagnosis of Complex Systems
    G. Biswas, G. Simon, N. Mahadevan, S. Narasimhan, J. Ramirez, and G. Karsai, Proceedings of the 5th IFAC Symposium on Fault Detection, Supervision and Safety of Technical Processes, Washington D.C., 1125-1131, June 2003. abstract| pdf
  4. Fault-Adaptive Control: A CBS Application
    G. Karsai, G. Biswas, T. Pasternak, and S. Narasimhan, Proceedings of the 8th Annual IEEE International Conference on Engineering of Computer Based Systems (ECBS), Washington D.C., 205-211, 2001. abstract| pdf
  5. A Combined Qualitative/Quantitative Approach for Fault Isolation in Continuous Dynamic Systems
    E. J. Manders, S. Narasimhan, G. Biswas, and P. J. Mosterman, Proceedings of the 4th IFAC Symposium on Fault Detection, Supervision and Safety of Technical Processes, Budapest, Hungary, 512-517, June 2000. abstract| pdf
  6. Measurement Selection and Diagnosability of Complex Dynamic Systems
    P. J. Mosterman, S. Narasimhan, and G. Biswas, Proceedings of the 8th International Workshop on Principles of Diagnosis, Mont St. Michel, France, 79-86, October 1997. abstract| pdf
  7. Process Diagnosis in Transient Operating Regions: Fault Detection and Isolation in a Liquid Sodium Cooling System
    P. J. Mosterman, S. Narasimhan, G. Biswas, T. Washio, and S. Yoshikawa, Proceedings of the 3rd Workshop on Engineering Problems for Qualitative Reasoning (IJCAI), Nagoya, Japan, 45-54, 1997. abstract| pdf


Technical Reports

  1. Diagnostic Technology Evaluation Report For On-Board Crew Launch Vehicle
    S. Hayden, N. Oza, R. Mah, R. Mackey, S. Narasimhan, G. Karsai, S. Poll, S. Deb, and M. Shirley, NASA/TM-2006-214552, 2006. abstract| pdf
  2. Petri-net models for diagnosis of copier machines
    S. Narasimhan, 2000. abstract| pdf
  3. Hybrid modeling and diagnosis of the DC265 copier machine
    S. Narasimhan, 1999. abstract| pdf
  4. Modeling copiers in HybridCC
    S. Narasimhan, 1998. abstract| pdf
  5. Year 1 Report: A Process Diagnosis Engine applied to the Secondary Sodium Cooling Loop
    P. J. Mosterman, S. Narasimhan, and G. Biswas, 1997. abstract| pdf


Misc.

  1. Model based Diagnosis of Hybrid Physical Systems
    S. Narasimhan, PhD Thesis, Vanderbilt University, Nashville, TN, 2002. abstract| pdf
  2. Effective Measurement Selection for Fault Isolation in Complex Dynamic Systems
    S. Narasimhan, Masters Thesis, Vanderbilt University, Nashville, TN, 1998. abstract| pdf


Contact

Name : Sriram Narasimhan
Title: Computer Scientist

Intelligent Systems Division
Ames Research Center
Mail Stop 269-3
Moffett Field, CA 94035

Phone: 650-604-0832

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