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Biography

Indranil Roychoudhury received the B.E. (Hons.) degree in Electrical and Electronics Engineering from Birla Institute of Technology and Science, Pilani, Rajasthan, India in 2004, and the M.S. and Ph.D. degrees in Computer Science from Vanderbilt University, Nashville, Tennessee, USA, in 2006 and 2009, respectively.

From September 2004 to July 2009, he has been a Graduate Research Assistant with the Institute for Software Integrated Systems, Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, Tennessee, USA. During the summers of 2006 and 2007, he was an intern with Mission Critical Technologies, Inc., at NASA Ames Resarch Center. Since August 2009, he has been with SGT, Inc., at NASA Ames Research Center as a Computer Scientist. His research interests include hybrid systems modeling, model-based diagnosis, distributed diagnosis, and Bayesian diagnosis of complex physical systems.

My Curriculum Vitae can be downloaded here.

Publications:

All publications are available for download at http://indranilroychoudhury.com/publications.html.

Journals

  1. I. Roychoudhury , M. Daigle, G. Biswas, and X. Koutsoukos, "Efficient Simulation of Hybrid Systems: A Hybrid Bond Graph Approach," SIMULATION: Transactions of the Society for Modeling and Simulation International, vol. 87, no. 6, pp. 467-498, June 2011. Published online on April, 2010 as doi:10.1177/0037549710364478 (abstract).
  2. M. Daigle, I. Roychoudhury , G. Biswas, X. Koutsoukos, "A Comprehensive Diagnosis Methodology for Complex Hybrid Systems: A Case Study on Spacecraft Power Distribution Systems," IEEE Transactions on System, Man, and Cybernetics, Part A: Special issue on "Model-based Diagnosis: Facing Challenges in Real-world Applications", vol. 4, no. 5, pp. 917-931, September 2010.
  3. I. Roychoudhury , G. Biswas, and X. Koutsoukos, "Designing Distributed Diagnosers for Complex Continuous Systems," IEEE Transactions on Automation Science and Engineering, vol. 6, no. 2, pp. 277-290, April 2009.
  4. I. Roychoudhury , M. Daigle, G. Biswas, and X. Koutsoukos, "An Efficient Method for Simulating Complex Systems with Switching Behaviors Using Hybrid Bond Graphs," Simulation News Europe , vol. 18, no. 3-4, pp. 5-13, December 2008.

Theses

  1. I. Roychoudhury , "Distributed Diagnosis of Continuous Systems: Global Diagnosis Through Local Analysis," PhD Dissertation, Vanderbilt University, August 2009.

Conferences


    2013

  1. R. Rajamani, A. Saxena, F. Kramer, M. Augustine, J. B. Schroeder, K. Goebel, G. Schao, I. Roychoudhury , and W. Lin, "Guidelines for Writing IVHM Requirements for Aerospace Systems," in SAE 2013 AeroTech Congress & Exhibition, September 2013, to appear.
  2. I. Roychoudhury , V. Hafiychuk, and K. Goebel, "Model-Based Diagnosis and Prognosis of a Water Recycling System," in Proceedings of the 2013 IEEE Aerospace Conference, March 2013.
  3. I. Roychoudhury , M. Daigle, A. Bregon, and B. Pulido, "A Structural Model Decomposition Framework for Systems Health Management," in Proceedings of the 2013 IEEE Aerospace Conference, March 2013.

  4. 2012

  5. A. Bregon, M. Daigle, and I. Roychoudhury , "An Integrated Framework for Model-Based Distributed Diagnosis and Prognosis," in Proceedings of the Annual Conference of the Prognostics and Health Management Society 2012, Minneapolis, MN, September 2012.
  6. M. Daigle, I. Roychoudhury , and A. Bregon, "A Distributed Approach to System-Level Prognostics," in Proceedings of the Annual Conference of the Prognostics and Health Management Society 2012, Minneapolis, MN, September 2012.
  7. A. Bregon, M. Daigle, and I. Roychoudhury , "An Integrated Model-Based Distributed Diagnosis and Prognosis Framework," in Proceedings of the 23rd International Workshop on Principles of Diagnosis, Great Malvern, UK, July - August 2012.
  8. S. Narasimhan, E. Balaban, M. Daigle, I. Roychoudhury , A. Sweet, J. Celaya, and K. Goebel, “Autonomous Decision Making for Planetary Rovers Using Diagnostic and Prognostic Information,” Proceedings of the 8th IFAC Symposium on Fault Detection, Supervision and Safety of Technical Processes (SAFEPROCESS 2012), Mexico City, Mexico, August 2012.
  9. M. Daigle, A. Bregon, and I. Roychoudhury , “Qualitative Event-based Diagnosis with Possible Conflicts Applied to Spacecraft Power Distribution Systems,” Proceedings of the 8th IFAC Symposium on Fault Detection, Supervision and Safety of Technical Processes (SAFEPROCESS 2012), Mexico City, Mexico, August 2012.
  10. A. Saxena, J. Celaya, I. Roychoudhury , S. Saha, B. Saha, and K. Goebel, "Designing Data-Driven Battery Prognostic Approaches for Variable Loading Profiles: Some Lessons Learnt," Proceedings of the First European Conference of the Prognostic and Health Management Society, Dresden, Germany, July 2012.
  11. A. Saxena, I. Roychoudhury , C. Neukom, A. Huang, G. Pisanich, and D. Tran, D, “Evaluating the Impact of Unrestricted Operation of Unmanned Aircraft Systems in the National Airspace System,” Proceedings of the AIAA Infotech@Aerospace, Garden Grove, CA, June 2012.
  12. A. Saxena, I. Roychoudhury , J. Celaya, B. Saha, S. Saha, and K. Goebel, “Requirement Flowdown for Prognostics Health Management,” Proceedings of the AIAA Infotech@Aerospace, Garden Grove, CA, June 2012.

  13. 2011

  14. I. Roychoudhury and M. Daigle, "An Integrated Model-Based Diagnostic and Prognostic Framework," in Proceedings of the 22nd International Workshop on Principles of Diagnosis, Murnau, Germany, October 2011.
  15. A. Bregon, M. Daigle, I. Roychoudhury , G. Biswas, X. Koutsoukos, and B. Pulido, "Improving Distributed Diagnosis Through Structural Model Decomposition," in Proceedings of the 22nd International Workshop on Principles of Diagnosis, Murnau, Germany, October 2011.
  16. M. Daigle, A. Bregon, and I. Roychoudhury , "Qualitative Event-based Diagnosis with Possible Conflicts: Case Study on the Third International Diagnostics Competition", in Proceedings of the 22nd International Workshop on Principles of Diagnosis, Murnau, Germany, October 2011.
  17. M. Daigle, I. Roychoudhury , S. Narasimhan, B. Saha, S. Saha, and K. Goebel, "Investigating the Effect of Damage Progression Model Choice on Prognostics Performance," in Proceedings of the Annual Conference of the Prognostics and Health Management Society, 2011, Montreal, Canada, September 2011. (Best Paper, Theoretical Paper Category)
  18. M. Daigle, A. Bregon, and I. Roychoudhury , "Distributed Damage Estimation for Prognostics Based on Structural Model Decomposition," in Proceedings of the Annual Conference of the Prognostics and Health Management Society, 2011, Montreal, Canada, September 2011. (Nominated for Best Paper Award, Theoretical Paper Category)
  19. E. Balaban, S. Narasimhan, M. Daigle, J. Celaya, I. Roychoudhury , B. Saha, S. Saha, and K. Goebel, "A Mobile Robot Testbed for Prognostics-Enabled Autonomous Decision Making," in Proceedings of the Annual Conference of the Prognostics and Health Management Society, 2011, Montreal, Canada, September 2011. (Nominated for Best Paper Award, Application Paper Category)
  20. E. Balaban, A. Saxena, S. Narasimhan, I. Roychoudhury , and K. Goebel, "Experimental Validation of a Prognostic Health Management System for Electro-Mechanical Actuators," in Proceedings of the AIAA Infotech@Aerospace, St. Louis, Missouri, March 2011.

  21. 2010

  22. S. Narasimhan, I. Roychoudhury , E. Balaban, and A. Saxena, "Combining Model-Based and Feature-Driven Diagnosis Approaches - A Case Study on Electromechanical Actuators," in Proceedings of the 21st International Workshop on Principles of Diagnosis, October 2010.
  23. M. Daigle, I. Roychoudhury , G. Biswas, and X. Koutsoukos, "An Event-based Approach to Distributed Diagnosis of Continuous Systems," in Proceedings of the 21st International Workshop on Principles of Diagnosis, October 2010.
  24. M. Daigle and I. Roychoudhury , "Qualitative Event-based Diagnosis: Case Study on the Second International Diagnostic Competition," in Proceedings of the 21st International Workshop on Principles of Diagnosis, October 2010.
  25. E. Balaban, A. Saxena, S. Narasimhan, I. Roychoudhury , K. Goebel, and M. Koopmans, "Airborne Electro-Mechanical Actuator Test Stand for Development of Prognostic Health Management Systems," in Proceedings of the Annual Conference of the Prognostics and Health Management Society, October 2010.
  26. I. Roychoudhury , G. Biswas, and X. Koutsoukos, "Distributed Diagnosis in Uncertain Environments Using Dynamic Bayesian Networks," in Proceedings of the 18th Mediterranean Conference on Control and Automation (MED'10), Marrakech, Morocco, June 2010.
  27. A. Saxena, I. Roychoudhury , J. R. Celaya, S. Saha, B. Saha, and K. Goebel, "Requirements Specifications for Prognostics: An Overview," in Proceedings of the AIAA Infotech@Aerospace, Atlanta, Georgia, April 2010.
  28. I. Roychoudhury , G. Biswas, and X. Koutsoukos, "Using Factored Bond Graphs for Distributed Diagnosis of Complex Systems", in Proceedings of the 9th International Conference on Bond Graph Modeling and Simulation, pp. 11-18, Orlando, FL, April 2010.

  29. 2009

  30. I. Roychoudhury , G. Biswas, and X. Koutsoukos, "Factoring Dynamic Bayesian Networks Based on Structural Observability," Proceedings of 48th IEEE Conference on Decision and Control (IEEE CDC 2009), Shanghai, P. R. China, December 2009.
  31. I. Roychoudhury , G. Biswas, and X. Koutsoukos, "Efficient Estimation for Diagnosis Using Factored Dynamic Bayesian Networks," 7th IFAC Symposium on Fault Detection, Supervision, and Safety of Technical Processes (SAFEPROCESS 2009), June 2009.
  32. I. Roychoudhury , M. Daigle, G. Biswas, X. Koutsoukos, A. Patterson-Hine, and S. Poll, "Comprehensive Diagnosis of Complex Electrical Power Systems," 7th IFAC Symposium on Fault Detection, Supervision, and Safety of Technical Processes (SAFEPROCESS 2009), June 2009.
  33. I. Roychoudhury , G. Biswas, and X. Koutsoukos, "Distributed Diagnosis of Dynamic Systems Using Dynamic Bayesian Networks", in Proceedings of the 20th International Workshop on Principles of Diagnosis, Stockholm, Sweden, June 2009.

  34. 2008

  35. I. Roychoudhury , G. Biswas, and X. Koutsoukos, "Comprehensive Diagnosis of Continuous Systems Using Dynamic Bayes Nets", in Proceedings of the 19th International Workshop on Principles of Diagnosis, pp. 151-158, Blue Mountains, Australia, September 2008.
  36. I. Roychoudhury , M. Daigle, G. Biswas, and X. Koutsoukos, "Efficient Simulation of Hybrid Systems: An Application to Electrical Power Distribution Systems," in Proceedings of the 22nd European Conference on Modeling and Simulation, pp. 471-477, June 2008.

  37. 2007

  38. S. Poll, A. Patterson-Hine, J. Camisa, D. Nishikawa, L. Spirkovska, D. Garcia, D. Hall, C. Neukom, A. Sweet, S. Yentus, C. Lee, J. Ossenfort, I. Roychoudhury , M. Daigle, G. Biswas, X. Koutsoukos, and R. Lutz, "Evaluation, Selection, and Application of Model-Based Diagnosis Tools and Approaches," AIAA Infotech@Aerospace 2007 Conference and Exhibit, May 2007.
  39. S. Poll, A. Patterson-Hine, J. Camisa, D. Garcia, D. Hall, C. Lee, O. Mengshoel, C. Neukom, D. Nishikawa, J. Ossenfort, A. Sweet, S. Yentus, I. Roychoudhury , M. Daigle, G. Biswas, and X. Koutsoukos, "Advanced Diagnostics and Prognostics Testbed," 18th International Workshop on Principles of Diagnosis, pp. 178-185, May 2007.
  40. A. Moustafa, M. Daigle, I. Roychoudhury , C. Shantz, G. Biswas, S. Mahadevan, and X. Koutsoukos, "Fault Diagnosis of Civil Engineering Structures using the Bond Graph Approach," 18th International Workshop on Principles of Diagnosis, pp. 146-153, May 2007.
  41. M. Daigle, I. Roychoudhury , G. Biswas, and X. Koutsoukos, "Efficient Simulation of Component-Based Hybrid Models Represented as Hybrid Bond Graphs," Hybrid Systems: Computation and Control (HSCC 2007), vol. 4416, pp. 680-683, Apr 2007. (short paper)
  42. I. Roychoudhury , M. Daigle, G. Biswas, X. Koutsoukos, and P. J. Mosterman, "A Method for Efficient Simulation of Hybrid Bond Graphs," International Conference on Bond Graph Modeling (ICBGM 2007), pp. 177-184, Jan 2007.

  43. 2006

  44. I. Roychoudhury , G. Biswas, X. Koutsoukos, "A Bayesian Approach to Efficient Diagnosis of Incipient Faults", 17th International Workshop on Principles of Diagnosis (DX 06), Spain, pp. 243 - 250, June 2006.

  45. 2005

  46. I. Roychoudhury , G. Biswas, X. Koutsoukos, and S. Abdelwahed, "Designing distributed diagnosers for complex physical systems", in Proceedings of the 16th International Workshop on Principles of Diagnosis (DX 05), Monterey, California, pp. 31 - 36, June 2005.

Technical Reports

  1. M. Daigle, I. Roychoudhury , G. Biswas, X. Koutsoukos, A. Patterson-Hine, and S. Poll, "A Comprehensive Diagnosis Methodology for Complex Hybrid Systems: A Case Study on Spacecraft Power Distribution Systems," Technical Report ISIS-08-908, Institute for Software Integrated Systems, Vanderbilt University, Dec 2008.
  2. M. Daigle, I. Roychoudhury , G. Biswas, and X. Koutsoukos, "Efficient Simulation of Hybrid Models Represented as Hybrid Bond Graphs," Technical Report ISIS-06-712, Institute for Software Integrated Systems, Vanderbilt University, Dec 2006.


Indranil Roychoudhury

Contact

Computer Scientist
SGT Inc.

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

Phone: 650-604-0448
Email:indranil.roychoudhury at nasa dot gov
Web: www.indranilroychoudhury.com

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