Girish Chowdhary - HILx Simulations & Flight Testing
Girish Chowdhary received his PhD and MS degrees from Georgia Institute of Technology. He has postdoctoral research experience at the Laboratory for Information and Decision Systems (LIDS) of the Massachusetts Institute of Technology, and prior research experience at the German Aerospace Center's (DLR's) Institute of Flight Systems. He is currently an assistant professor at Oklahoma State University's School of Mechanical and Aerospace Engineering. Girish's ongoing research interest is in creating provable algorithms to enable intelligent adaptive autonomy for large-scale and long-duration UAS operation. He has authored over 90 peer reviewed papers and made several key contributions to adaptive control, aircraft system identification, fault tolerant control, distributed sensing and inference, Bayesian nonparametric learning and control, autonomous UAS operation over long durations, vision aided navigation and control, and UAS avionics systems. His work has been applied and flight-tested on several research UASs and he has been deeply involved in the development and automation of over 10 UAS. Girish is the PI on several federally funded projects, including those by AFOSR, NASA, NSF, and DOE.Girish received the Ward Memorial Lecture award from the Aerospace Control and Guidance Systems committee for outstanding contributions to plug-and-adapt UAS autonomy in 2015. He also received the AFOSR Young Investigator Award in 2015.
Ure, N. K., Chowdhary G., How J. P., Vian J., Multi-Agent Planning for Persistent Surveillance, in Planning Under Uncertainty, Chapt. 12, Feb 2014.
How J., Frazzoli E., Chowdhary G., Linear Flight Control Techniques for Unmanned Aerial Vehicles, to appear in the Springer handbook of UAVs, January 2014.
Chowdhary G., Frazzoli E., How J., Lui H., Nonlinear Flight Control Techniques for Unmanned Aerial Vehicles, to appear in the Springer handbook of UAVs, January2014.
Kannan S., Chowdhary G., Johnson E., Adaptive Control of Unmanned Aerial Vehicles – Theory and Flight Test Results, to appear in the Springer handbook of UAVs, January 2014.
Chowdhary G., Muhlegg M., How J. P., Holzapfel F., Concurrent Learning Adaptive Model Predictive Control, pp. 29-47, in Advances in Aerospace Guidance, Navigation, and Control, Springer Berlin Heidelberg, 2013.
Journal Publications (appeared or Accepted)
Ure N. K., Chowdhary G., How J. P., Vian J., Health-Aware Planning Under Uncertainty for Collaborative Heterogeneous Teams of Mobile Agents, Unmanned Systems, Vol 3, No. 2, pp 89-107, April 2015.
Chowdhary G., Liu M., Grande R., Walsh T., How J. P., Carrin L., Off-Policy Reinforcement Learning with Gaussian Processes, IEEE/CAA Journal of Automatica Sinica special issue on advances in reinforcement learning and adaptive control, Vol 1, No. 3, pp 227-238, Jan 2015.
Chowdhary G., Kingravi H., How J. P, Patricio V., Bayesian Nonparametric Adaptive Control using Gaussian Processes, IEEE Transactions in Neural Networks and Learning Systems, Vol 26, No. 3, pp. 537-550, March 2015.
Mu B., Chowdhary G., How J. P., Efficient Distributed Sensing using Adaptive Censoring Based Inference, Automatica, Vol 50, No 6, pp 1590-1602, June 2014.
Grande R., Chowdhary G., How J. P., Experimental Validation of Bayesian Nonparametric Adaptive Control using Gaussian Processes, AIAA Journal of Aerospace Information Systems, special issue on applications of reinforcement learning and learning based adaptive control to mechanical and aerospace systems, Vol 11, pp 565-578, July 2014
Ure N. K., Chowdhary G., Toksoz T., How J. P., Vavrina M., Vian J., An Automated Battery Management System to Enable Persistent Missions with Multiple Aerial Vehicles, IEEE Transactions on Mechatronics, Vol. 20, No. 1, pp. 275-286, Jan 2014.
Ure N. K., Chowdhary G., Chen Y. F., How J. P., Distributed Learning for Planning Under Uncertainty Problems with Heterogeneous Teams, Journal of Intelligent and Robotic Systems, Vol 74, No. 1-2, pp 529-544, April 2014.
Geramifard A., Walsh T. J., Tellex S., Chowdhary G., Roy N., How J. P., A Tutorial on Linear Function Approximators for Dynamic Programming and Reinforcement Learning, Foundations and Trends in Machine Learning, vol. 6, No. 4, December 2013.
Wu D., Johnson E., Dallaert F., Kaess M., Chowdhary G., Autonomous Flight in GPS-Denied Environments Using Monocular Vision and Inertial Sensors, AIAA Journal of Aerospace Information Systems, Vol 10., No. 4, pp. 172-186, April 2013.
Chowdhary G., Johnson E., Magree D., Wu D., Shein A., GPS-Denied Indoor and Outdoor Monocular Vision Aided Navigation and Control of Unmanned Aircraft, Journal of Field Robotics, Vol 30, No. 3, pp 415-438, March 2013.
Chowdhary G., Sobers M., Salün E., Ottander J., Fully Autonomous Indoor Flight Relying on Five Very Low-Cost Range Sensors, AIAA Journal of Aerospace Information Systems, Vol 10, No. 1, pp 21-31, January 2013.
Chowdhary G., Johnson E., Chandramohan R., Kimbrell M. S., Calise A., Guidance and Control of Airplanes Under Actuator Failures and Severe Structural Damage, AIAA Journal of Guidance Control and Dynamics, vol 36, No. 4, pp. 1093-1104, 2013.
Chowdhary G., Mühlegg M., Johnson E., Exponential Stability Guarantees for Adaptive Systems using Online Recorded Data, Internatinal Jounral of Control, Vol 87, No. 8,pp 1583-1603, Dec 2013.
Chowdhary G., Yucelen T., Mühlegg M, Johnson E, Concurrent Learning Adaptive Control of Linear Systems with Exponentially Convergent bounds, Wiley International Journal of Adaptive Control and Signal Processing, Vol 27, No. 4, pp 280-301, April 2013.
Chowdhary G., Sobers D. M., Pravitra C., Christmann C., Wu A., Hashimoto H., Ong C., Kalghatgi R., Johnson E., Self-Contained Ranging Sensor Aided Guidance, Navigation, and Control for Autonomous Indoor Flight, AIAA Journal of Guidance Control and Dynamics, Vol. 35, No. 6, pp. 1843-1854, Nov-Dec 2012.
Kingravi H., Chowdhary G., Vela P., Johnson E., A Reproducing Kernel Hilbert Space Approach for the Online Update of Radial Bases in Neuro-Adaptive Control, IEEE Transactions on Neural Networks and Learning Systems, Vol 23, no. 7, pp 1130-1141, July 2012.
Chowdhary G., Johnson E., Theory and Flight Test Validation of a Concurrent Learning Adaptive Controller, AIAA Journal of Guidance Control and Dynamics, Vol. 34, No. 2, pp. 592-607, March-April 2011.
Chowdhary G., Srinivasan S., Johnson E., Frequency Domain Method for Real-Time Detection of Oscillations, AIAA Journal of Aerospace Computing, Information, and Communication, Vol. 8, No.2, pp. 42-52, February 2011.
Chowdhary G., Jategaonkar R.., Parameter Estimation from Flight Data Applying Extended and Unscented Kalman Filter, Aerospace Science and Technology, Vol. 14, no. 2, pp. 106-117, March 2010.
Anderson R., Chowdhary G., Johnson E., Comparison of RBF and SHL Neural Network Based Adaptive Control, Journal of Intelligent and Robotic Systems, Springer, vol. 54, no. 1-3, pp. 183-199, Sept 2008.