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 Journal Publications

[1] C.Cao,  Naira Hovakimyan,“L1 Adaptive Output-Feedback Controllers for Non-Strictly-Positive-Real Reference Systems: Missile Longitudinal Autopilot Design.” Journal of Guidance, Control, and Dynamics, vol. 32, No. 3, pp.717-726, May-June, 2009.

 

[2] Vijay V. Patel, C. Cao, Naira Hovakimyan, Kevin A. Wise, Eugene Lavretsky ,“L1 adaptive controller for tailless unstable aircraft in the presence of unknown actuator failures”, International Journal of Control, Vol. 82, No. 4, 705–720, April 2009.

 

[3] Naira Hovakimyan, Eugene Lavretsky, C.cao, “Dynamic inversion for multivariable non-affine-in-control systems via time-scale separation”, International Journal of Control, Vol. 81, No. 12, 1960–1967, December 2008.

 

[4]  C.Cao,  Naira Hovakimyan,Vision-based tracking using intelligent excitation", International Journal of Control, Vol. 81, No. 11, 1763–1778, November 2008

 

[5] N.Hovakimyan, E.Lavretsky, C. Cao, "Adaptive Dynamic Inversion via Time-Scale Separation," IEEE Transactions on Neural Networks”, vol.19, no.10, pp.1702-1711, Oct. 2008.

 

[6] C. Cao, and N. Hovakimyan, L1 adaptive controller for systems with unknown time-varying parameters and disturbances in the presence of non-zero trajectory initialization error”, International Journal of Control, Vol. 81, No. 7, 1147–1161, July 2008.

 

[7] C. Cao, N.Hovakimyan, Johnny Evers, "Active control of visual sensor for navigation and guidance", Computational Management Science,Springer, June, 2008

 

[8] Chengyu Cao; Hovakimyan, N., " L1 Adaptive Output Feedback Controller for Systems of Unknown Dimension," IEEE Transactions on Automatic Control , vol.53, no.3, pp.815-821, April 2008.

 

[9] C. Cao, and N. Hovakimyan, “Design and Analysis of a Novel L1 Adaptive Controller with Guaranteed Transient Performance”, IEEE Transactions on Automatic Control, Vol 53, no.2, pp. 586 – 591,March, 2008.

 

[10] J. Wang, V. Patel, C. Cao, N. Hovakimyan, and E. Lavretsky, L1 Adaptive Neural Network Controller for Autonomous Aerial Refueling with Guaranteed Transient Performance”, AIAA Journal of Guidance, Control and Dynamics, pp. 182-193, No. 1, Vol. 31, January-February 2008.

 

[11] A. Young, C. Cao, N. Hovakimyan, and E. Lavretsky, An Adaptive Approach to Nonaffine Control Design for Aircraft Applications”, AIAA Journal of Guidance, Control, and Dynamics, pp. 1770-1782, No. 6, Vol. 30, November-December 2007.

 

[12] C. Cao, N. Hovakimyan, and J. Wang, “Intelligent Excitation for Adaptive Control with Unknown Parameters in Reference Input”, IEEE Transactions on Automatic Control. pp. 1525-1532, No. 8, Vol. 52, August 2007.

 

[13] C. Cao, and N. Hovakimyan, “Novel L1 Neural Network Adaptive Control Architecture with Guaranteed Transient Performance”, IEEE Transactions on Neural Networks, pp. 1160-1171, No.4, Vol. 18, July 2007.

 

[14] C. Cao, and A. Annaswamy, “A Hierarchical Discretized-parameter Polynomial Adaptive Estimator for Nonlinearly Parameterized Systems”, International Journal of Control, pp.831-844, No. 8, Vol. 79, August 2006.

 

[15] C. Cao, A. Annaswamy, and A. Kojic, “Parameter Convergence in Nonlinearly Parameterized Systems”, IEEE Transactions on Automatic Control, 48:397-412, March 2003.

 

[16] C. Cao, R. Li and J. Fan, “A New Algorithm on Job-Shop Scheduling”, Control Theory and Application, pp. 31-34, No.1, Vol. 17, 2000.

 

 

   Peer-reviewed conference proceedings

      [17] K. Wise, E. Lavretsky, N. Hovakimyan, C. Cao, J. Wang, “Verifiable Adaptive Flight Control: UCAV and Aerial Refueling”, AIAA-2008-6658, AIAA Guidance, Navigation and Control Conference, Honolulu, HI, 2008.

 

      [18] M. C. Cotting, C. Cao, N. Hovakimyan, R. Kraus, W. Durham, “Simulator Testing of Longitudinal Flying Qualities with Adaptive Controller,” AIAA-2008-6551, AIAA Guidance, Navigation and Control Conference, Honolulu, HI, 2008.

 

     [19] V. Dobrokhodov, I. Kitsiois, I. Kaminer, K. Jones, E. Xargay, N. Hovakimyan, C. Cao, M. Lizarraga, I. Gregory, “Flight Validation of Metrics Driven Adaptive Control,” AIAA-2008-6987, AIAA Guidance, Navigation and Control Conference, Honolulu, HI, 2008.

 

     [20] D. Li, N. Hovakimyan, C. Cao, K. Wise, “Filter Design for Feedback-loop Trade-off of Adaptive Controller: A Linear Matrix Inequality Approach,” AIAA-2008-6280, AIAA Guidance, Navigation and Control Conference, Honolulu, HI, 2008.

 

     [21] E. Kharisov, I. Gregory, C. Cao, N. Hovakimyan, “Adaptive Control Laws for Flexible Space Launch Vehicle and Proposed Plan for Flight Test Validation,” AIAA-2008-7128, AIAA Guidance, Navigation and Control Conference, Honolulu, HI, 2008.

 

     [22]P. Aguiar, A. Pascoal, I. Kaminer, V. Dobrokhodov, E. Xargay, N. Hovakimyan, C. Cao, R. Ghabcheloo, “Time-Coordinated Path Following of Multiple UAVs over Time-Varying Networks using Adaptation,” AIAA-2008-7131, AIAA Guidance, Navigation and Control Conference, Honolulu, HI, 2008.

 

     [23] C. Cao, and N. Hovakimyan, “L1 Adaptive Output Feedback Controller for Non Strictly Positive Real Reference Systems with Applications to Aerospace Examples”, AIAA-2008-7288, AIAA Guidance, Navigation, and Control Conference and Exhibit, Honolulu, HI, 2008.

 

     [24] J.Wang, C. Cao, and N. Hovakimyan , “L1 Adaptive Controller for a Missile Longitudinal Autopilot Design”, AIAA-2008-6282, AIAA Guidance, Navigation, and Control Conference and Exhibit, Honolulu, HI, 2008.

 

     [25] L.Ma, C. Cao, A.Young and N. Hovakimyan , “Motion Estimation via a Zoom Camera”, AIAA-2008-7446, AIAA Guidance, Navigation, and Control Conference and Exhibit, Honolulu, HI ,2008.

 

     [26] L.Ma, C. Cao, and N. Hovakimyan , “Adaptive Vision-Based Guidance Law with Guaranteed Performance Bounds for Tracking a Ground Target with Time-Varying Velocity”, AIAA-2008-7445, AIAA Guidance, Navigation, and Control Conference and Exhibit, Honolulu, HI, 2008.

 

     [27] C. Cao, and N. Hovakimyan, “ L1 Adaptive Controller for Multi-Input Multi-Output Systems in the Presence of Unmatched Disturbances”, American Control Conference, Seattle, WA, pp. 4105-4110, 2008.

 

[28] C. Cao, and N. Hovakimyan, “L1 Adaptive Controller for a Class of Systems with Unknown Nonlinearities: Part I.”, American Control Conference, Seattle, WA, pp. 4093-4098, 2008..

 

[29] C. Cao, and N. Hovakimyan, “L1 Adaptive Controller for Nonlinear Systems in the Presence of Unmodelled Dynamics: Part II.”, American Control Conference, Seattle, WA, pp. 4099-4104, 2008.

.

 [30] A. P. Aguiar, I. Kaminer, R. Ghabcheloo, A. M. Pascoal, N. Hovakimyan, C. Cao, V. Dobrokhodov,  Coordinated Path Following of Multiple UAVs for Time-Critical Missions in the Presence of Time-Varying Communication Topologies”, IFAC Congress, Seoul, South Korea, 2008.

 

[31] C. Cao, and N. Hovakimyan, “L1 Adaptive Controller for Systems in the Presence of Unmodelled Actuator Dynamics”, Proceedings of Conference on Decision and Control, 2007.

 

[32] Q. Wang and C. Cao, “Control Probems for Nonlinear Systems Given by Klein-Gordon-Maxwell Equations with Electromagnetic Field”, Proceedings of Conference on Decision and Control, 2007.   

 

[33] C. Cao, and N. Hovakimyan, “Effect of Non-zero Initialization Error on the Performance Bounds in L1 Adaptive Control Architecture”, AIAA-2007-6645, AIAA Guidance, Navigation, and Control Conference and Exhibit, 2007.

 

[34] L. Ma, C. Cao, N. Hovakimyan, C. Woolsey, V. Dobrokhodov and I. Kaminer, “Development of a Vision-Based Guidance Law for Tracking a Moving Target”, AIAA-2007-6744, AIAA Guidance, Navigation, and Control Conference and Exhibit, 2007.

 

[35] V. Patel, C. Cao, N. Hovakimyan, K. Wise, and E. Lavretsky, “L1 Adaptive Controller for Tailless Unstable Aircraft in the Presence of Unknown Actuator Failures”, AIAA-2007-6314, AIAA Guidance, Navigation, and Control Conference and Exhibit, 2007.

 

[36] R. Hindman, C. Cao, and N. Hovakimyan, K. Wise, E. Lavretsky, “Designing of High Performance, Stable L1 Output Feedback Adaptive Controller”, AIAA-2007-6644, AIAA Guidance, Navigation, and Control Conference and Exhibit, 2007.

 

[37] I. M. Gregory, C. Cao, V. Patel, and N. Hovakimyan, “Adaptive Control Laws for Flexible Semi-Span Wind Tunnel Model of High-Aspect Ratio Flying Wing”, AIAA-2007-6525, AIAA Guidance, Navigation, and Control Conference and Exhibit, 2007.

 

[38] J. Wang, V. Patel, C. Cao, N. Hovakimyan, and E. Lavretsky, “Verifiable L1 Adaptive Controller for Aerial Refueling”, AIAA-2007-6313, AIAA Guidance, Navigation, and Control Conference and Exhibit, 2007.

 

[39] E. Lavretsky, N. Hovakimyan and C. Cao, “Adaptive Design for Uncertain Systems with Nonlinear-in-Control Dynamics”, AIAA-2007-6503, AIAA Guidance, Navigation, and Control Conference and Exhibit, 2007.

  

[40] Y. Lei, C. Cao, N. Hovakimyan, A. Kurdila and E. Cliff, “Design of an L1 Adaptive Controller for Air-breathing Hypersonic Vehicle Model in the Presence of Unmodeled Dynamics”, AIAA-2007-6527, AIAA Guidance, Navigation, and Control Conference and Exhibit, 2007.

 

[41] V. Dobrokhodov, I. Kaminer, K. Jones and I. Kitsios, C. Cao, L. Ma and N. Hovakimyan Rapid Motion Estimation of a Target Moving with Time-Varying Velocity”, AIAA-2007-6746, AIAA Guidance, Navigation, and Control Conference and Exhibit, 2007.

 

[42] I. Kaminer, O. Yakimenko, V. Dobrokhodov, N. Hovakimyan, V. Patel, C. Cao, and A. Young, “Coordinated Path Following for Time-Critical Missions of Multiple UAVs via L1 Adaptive Output Feedback Controllers”, AIAA-2007-6409, AIAA Guidance, Navigation, and Control Conference and Exhibit, 2007.

 

[43] D. Li, V. Patel, C. Cao, and N. Hovakimyan, “Optimization of the Time-Delay Margin of L1 Adaptive Controller via the Design of the Underlying Filter”, AIAA-2007-6646, AIAA Guidance, Navigation, and Control Conference and Exhibit, 2007.

 

[44] L. Ma, C. Cao, N. Hovakimyan, and C. Woolsey, “Fast Estimation for Range Identification in the Presence of Unknown Motion Parameters”, ICINCO, 2007.

 

[45] C. Cao, and N. Hovakimyan, “Novel L1 Neural Network Adaptive Control Architecture with Guaranteed Transient Performance”, European Control Conference, 2007.

 

[46] I. Kaminer, N. Hovakimyan, V. Patel, C. Cao, A. Young, A. M. Pascoal, “Time-Critical Coordinated Path Following for Multiple UAVs via L1 Adaptive Output Feedback Controllers”,  European Control Conference, 2007.

 

[47] C. Cao, and N. Hovakimyan, “L1 Adaptive Output Feedback Controller to Systems of Unknown Dimension”, Proceedings of American Control Conference, pp. 1191-1196, 2007.

 

[48] C. Cao, and N. Hovakimyan, “L1 Adaptive Output Feedback Controller for Systems with Time-varying Unknown Parameters and Bounded Disturbances”, Proceedings of American Control Conference, pp. 486-491, 2007.

 

[49] C. Cao, and N. Hovakimyan, “Guaranteed Transient Performance with L1 Adaptive Controller for Parametric Strict Feedback Systems”, Proceedings of American Control Conference, pp.4786 – 4791, 2007.

 

[50] E. Lavretsky, C. Cao, and N. Hovakimyan, “Exponential Stability of Gradient Systems with Applications to Nonlinear-in-Control Design Methods”, Proceedings of American Control Conference, pp.6003-6008, 2007.

 

[51] C. Cao, and N. Hovakimyan, “Guaranteed Transient Performance with L1 Adaptive Controller for Systems with Unknown Time-varying Parameters: Part I”, Proceedings of American Control Conference, pp.3925-3930, 2007.

 

[52] C. Cao, and N. Hovakimyan, “Stability Margins of L1 Adaptive Controller: Part II”, Proceedings of American Control Conference, pp.3931-3936, 2007.

 

[53] C. Cao, N. Hovakimyan, V. Patel, I. Kaminer, and V. Dobrokhodov “Stabilization of Cascaded Systems via L1 Adaptive Controller with Application to a UAV Path Following Problem”, Proceedings of American Control Conference, pp.1787-1792, 2007.

 

[54] L. Ma, C. Cao, N. Hovakimyan, C. Woolsey, and W. E. Dixon, “Range Identification in the Presence of Unknown Motion Parameters for Perspective Vision Systems”, Proceedings of American Control Conference, pp.972-977, 2007.

 

[55] L. Techy, K. R. Chevva, C. Woolsey, C. Cao, and N. Hovakimyan , “Nonlinear Control of a Novel Two-Link Pendulum”, Proceedings of American Control Conference, pp.19-24, 2007.

 

[56] V. Patel, C. Cao, N. Hovakimyan, K. A. Wise, and E. Lavretsky, “L1 Adaptive Controller for Tailless Unstable Aircraft”, Proceedings of American Control Conference, pp.5272-5277, 2007.

 

[57] C. Cao, and A. Annaswamy “A Polynomial Adaptive Controller for Nonlinearly Parameterized Systems”, Proceedings of Conference on Decision and Control, pp. 1081-1086, 2006.

 

[58] N. Hovakimyan, E. Lavretsky and C. CaoAdaptive Dynamic Inversion via Time-Scale Separation”, Proceedings of Conference on Decision and Control, pp. 1075-1080, 2006.

 

[59] A. Young, C. Cao, N. Hovakimyan, and E. Lavretsky, “An Adaptive Approach to Non-affine Control Designs for Aircraft Applications”, AIAA-2006-6343, AIAA Guidance, Navigation, and Control Conference and Exhibit, 2006.

 

[60] R. Beard, C. Cao and N. Hovakimyan, “An L1 Adaptive Pitch Controller for Miniature Air Vehicles”, AIAA-2006-6777, AIAA Guidance, Navigation, and Control Conference and Exhibit, 2006.

 

[61] C. Cao, V. Patel, K. Reddy, N. Hovakimyan, E. Lavretsky and K. Wise, “Are the Phase and Time-delay Margins Always Adversely Affected by High-gain?”, AIAA-2006-6347, AIAA Guidance, Navigation, and Control Conference and Exhibit, 2006.

 

[62] J. Wang, C. Cao, N. Hovakimyan, and E. Lavretsky, “Neural Network Based Adaptive Approach to Autonomous Aerial Refuelling with Guaranteed Transient Performance”, AIAA-2006-6206, AIAA Guidance, Navigation, and Control Conference and Exhibit, 2006.

 

[63] C. Cao, N. Hovakimyan, and J. Evers, “Active Control of Visual Sensor for Aerial Tracking”, AIAA-2006-6610, AIAA Guidance, Navigation, and Control Conference and Exhibit, 2006.

 

[64] L. Ma, V. Stepanyan, C. Cao, I. Faruque, C. Woolsey, and N. Hovakimyan, “Flight Test Bed for Visual Tracking of Small UAVs”,  AIAA-2006-6609, AIAA Guidance, Navigation, and Control Conference and Exhibit, 2006.

 

[65] C. Cao, N. Hovakimyan, and E. Lavretsky, “Application of L1 Adaptive Controller to Wing Rock”, AIAA-2006-6426, AIAA Guidance, Navigation, and Control Conference and Exhibit, 2006.

 

[66] C. Cao, and N. Hovakimyan, “Design and Analysis of a Novel L1 Adaptive Controller with Guaranteed Transient Performance – Part I: Control Signal and Asymptotic Stability”, Proceedings of American Control Conference, pp. 3594-3599, 2006.

 

[67] C. Cao, and N. Hovakimyan, “Design and Analysis of a Novel L1 Adaptive Controller with Guaranteed Transient Performance – Part II: Guaranteed Transient Performance”, Proceedings of American Control Conference, pp. 3397-3402, 2006.

 

[68] N. Hovakimyan, E. Lavretsky and C. CaoDynamic Inversion for Multivariable Nonaffine-in-Control Systems via Time-Scale Separation”, Proceedings of American Control Conference, pp. 3594-3599, 2006.

 

[69] J. Wang, C. Cao, N. Hovakimyan, and E. Lavretsky, “Novel L1 Adaptive Control Approach to Autonomous Aerial Refueling with Guaranteed Transient Performance”, Proceedings of American Control Conference, pp.3569-3574, 2006.

 

[70] A. Young, C. Cao, N. Hovakimyan, and E. Lavretsky, “Control of a Double-Pendulum System via Dynamic Inversion and Time-Scale Separation”, Proceedings of American Control Conference, pp.1820-1825, 2006.

 

[71] C. Cao, J. Wang, and N. Hovakimyan “Adaptive Extremum Seeking Using Intelligent Excitation”, 2005 ISIC-MED, pp. 225-230, 2005.

 

[72] C. Cao, and N. Hovakimyan, “Vision-based Tracking using Intelligent Excitation”, Proceedings of American Control Conference, pp. 5091-5096, 2005.

 

[73] C. Cao, A. Annaswamy, and N. Hovakimyan “A Polynomial Adaptive Controller for Discretely Parameterized Systems”, Proceedings of American Control Conference, pp 2070-2075, 2005.

 

[74] C. Cao, and A. Annaswamy, “A Polynomial Adaptive Estimator for Nonlinearly Parameterized Systems”, Proceedings of American Control Conference, pp 584-589, 2004.

 

[75] C. Cao, and A. Annaswamy, “A Dead-zone Based Adaptive Filter for Systems with Unknown Parameters”, Proceedings of American Control Conference, pp 5400-5405, 2004.

 

[76] C. Cao and A. Annaswamy, “Conditions for Existence of Global and Local Minima in Neural Networks”, 12th Yale Workshop on Adaptive and Learning Systems, July, 2003

 

[77] C. Cao and A. Annaswamy, “Parameter Convergence in System with a General Nonlinear Parameterization Using a Hierarchical Algorithm”, Proceedings of American Control Conference, pp.382-387, 2002.

 

[78] A. Kojic, C. Cao, and A. Annaswamy, “Parameter Convergence in Systems with Convex/concave Parameterization”, Proceedings of American Control Conference, pp. 2240-2244, 2000.

 

[79] A. Annaswamy, H. Nhut, C. Cao, and A. Kojic, “A Convergent Frequency Estimator”, Proceedings of American Control Conference, pp. 2235-2239, 2000.