Research Interests

Cooperative motion planning and control of autonomous systems, distributed consensus algorithms, robust and adaptive control of nonlinear uncertain systems, flight control, handling qualities of piloted aircraft.

Education

M.Sc. Aerospace Engineering, Politecnico di Torino, Turin, Italy, 2007
M.Sc. Control Engineering, Technical University of Catalonia (UPC), Barcelona, Spain, 2007

Awards

Roger A. Strehlow Memorial Award, May 2011
Department of Aerospace Engineering. University of Illinois at Urbana-Champaign, Urbana, IL.
In recognition of outstanding research accomplishment.

Lemelson-MIT Illinois Student Prize semi-finalist (one of seven), February 2011
University of Illinois at Urbana-Champaign, Urbana, IL.

Best presentation in session award, July 2010
IEEE American Control Conference 2010, Baltimore, MD.
Awarded for presentation “L1 Adaptive Controller for Multi-Input Multi-Output Systems in the Presence of Nonlinear Unmatched Uncertainties”.

Patent

Adaptive Control for Uncertain Nonlinear Multi-Input/Multi-Output Systems, 2011
With N. Hovakimyan and C. Cao. (Patent pending)

Selected Publications

Papers in Edited Volumes

1. Xargay, Hovakimyan, Dobrokhodov, Kaminer, Cao, and Gregory, “L1 Adaptive Control in Flight,” in Intelligent Systems, Progress in Aeronautics and Astronautics Series, American Institute of Aeronautics and Astronautics. To appear in 2012.

Journal Papers

1. Xargay, Choe, Hovakimyan, and Kaminer, “Multi-Leader PI Coordination Algorithm for Networks with Switching Topology and Quantized Measurements,” submitted to Automatica, 2012.
2. Choe, Xargay, and Hovakimyan, “L1 Adaptive Control for Uncertain Nonaffine-in-Control Systems,” submitted to IEEE Transactions on Automatic Control, 2012.
3. Xargay, Kaminer, Pascoal, Hovakimyan, Dobrokhodov, Cichella, Aguiar, and Ghabcheloo, “Time-Critical Cooperative Path Following of Multiple UAVs over Time-Varying Networks,” to appear in Journal of Guidance, Control, and Dynamics, 2012.
4. Xargay, Dobrokhodov, Kaminer, Pascoal, Hovakimyan, and Cao, “Time-Critical Cooperative Control for Multiple Autonomous Vehicles,” to appear in IEEE Control Systems Magazine, October 2012.
5. Hovakimyan, Cao, Kharisov, Xargay, and Gregory, “L1 Adaptive Control for Safety-Critical Systems,” IEEE Control Systems Magazine, Vol. 31, No. 5, pp. 54-104 October 2011. [pdf]
6. Dobrokhodov, Kaminer, Kitsios, Xargay, Hovakimyan, Cao, Gregory, and Valavani, “Experimental Validation of L1 Adaptive Control: The Rohrs Counterexample in Flight,” Journal of Guidance, Control, and Dynamics, Vol. 34, No. 5, pp. 1311-1328, September-October 2011. [pdf]
7. Kaminer, Pascoal, Xargay, Cao, Hovakimyan, and Dobrokhodov, “Path Following for Unmanned Aerial Vehicles Using L1 Adaptive Augmentation of Commercial Autopilots,” Journal of Guidance, Control, and Dynamics, Vol. 33, No. 2, pp. 550-564, March-April 2010. [pdf]

Peer-reviewed Conferences

1. Xargay, Choe, Hovakimyan, and Kaminer, “Convergence of a PI Coordination Protocol in Networks with Switching Topology and Quantized Measurements,” accepted for publication in Conference on Decision and Control, Maui, HI, December 2012.
2. Peter, Holzapfel, Xargay, and Hovakimyan, “L1 Adaptive Augmentation of a Missile Autopilot,” in AIAA Guidance, Navigation, and Control Conference, Minneapolis, MN, August 2012. AIAA 2012-4832
3. Cichella, Xargay, Dobrokhodov, Kaminer, Pascoal, and Hovakimyan, “Geometric 3D Path-Following Control for a Fixed-Wing UAV on SO(3),” in AIAA Guidance, Navigation, and Control Conference, Portland, OR, August 2011. AIAA 2011–6415
4. Stroosma, Damveld, Mulder, Choe, Xargay, and Hovakimyan, “A Handling Qualities Assessment of a Business Jet Augmented with an L1 Adaptive Controller,” in AIAA Guidance, Navigation, and Control Conference, Portland, OR, August 2011. AIAA 2011-6610 [pdf]
5. Gregory, Xargay, Cao, and Hovakimyan, “Flight Test of L1 Adaptive Control Law: Offset Landings and Large Flight Envelope Modeling Work,” in AIAA Guidance, Navigation, and Control Conference, Portland, OR, August 2011. AIAA 2011–6608
6. Barton, Mishra, and Xargay, “Robust Iterative Learning Control: L1 Adaptive Feedback Control in an ILC Framework,” in American Control Conference, San Francisco, CA, June–July 2011.
7. Gregory, Xargay, Cao, and Hovakimyan, “L1 Adaptive Control Law in Support of Large Flight Envelope Modeling Work,” in CEAS Conference on Guidance, Navigation, and Control Conference, Munich, Germany, April 2011.
8. Gregory, Xargay, Cao, and Hovakimyan, “Flight Test of an L1 Adaptive Controller on the NASA AirSTAR Flight Test Vehicle,” in AIAA Guidance, Navigation, and Control Conference, Toronto, Canada, August 2010. AIAA 2010–8015
9. Griffin, Burken, and Xargay, “L1 Adaptive Control Augmentation System with Application to the X-29 Lateral/Directional Dynamics: A Multi-Input Multi-Output Approach,” in AIAA Guidance, Navigation, and Control Conference, Toronto, Canada, August 2010. AIAA 2010–7687
10. Avanzini, Capello, Piacenza, Quagliotti, Hovakimyan, and Xargay, “L1 Adaptive Control of Flexible Aircraft: Preliminary Results,” in AIAA Guidance, Navigation, and Control Conference, Toronto, Canada, August 2010. AIAA 2010–7501
11. Xargay, Hovakimyan, Dobrokhodov, Statnikov, Kaminer, Cao, and Gregory, “L1 Adaptive Flight Control System: Systematic Design and Verification and Validation of Control Metrics,” in AIAA Guidance, Navigation, and Control Conference, Toronto, Canada, August 2010. AIAA 2010–7773
12. Xargay, Hovakimyan, and Cao, “L1 Adaptive Controller for Multi-Input Multi-Output Systems in the Presence of Nonlinear Unmatched Uncertainties,” in American Control Conference, Baltimore, MD, June-July 2010. [pdf]
13. Leman, Xargay, Dullerud, Hovakimyan, and Wendel, “L1 Adaptive Controller for X48-B Aircraft,” in AIAA Guidance, Navigation, and Control Conference, Chicago, IL, August 2009. AIAA 2009–5619
14. Xargay, Hovakimyan, and Cao, “Benchmark Problems of Adaptive Control Revisited by L1 Adaptive Control,” in Mediterranean Conference on Control and Automation, Thessaloniki, Greece, June 2009.