Representative Publications, Patents and Presentations
Schierman, J.D, J.R. Hull, D.G. Ward, “Adaptive Guidance with Trajectory Reshaping for Reusable Launch Vehicles,” Proc. AIAA Guidance, Navigation, and Control Conf., Monterey, California, Aug. 2002, AIAA Paper No. 2002-4458.
Schierman, J.D, D.G. Ward, J.F. Monaco, J.R. Hull, “A Reconfigurable Guidance Approach For Reusable Launch Vehicles,” Proc. AIAA Guidance, Navigation, and Control Conf., Montreal, Canada, Aug. 2001, AIAA Paper No. 2001-4429.
Bateman, A., D. Ward, and J. Monaco, "Stability Analysis for Reconfigurable Systems with Actuator Saturation," Proc. American Control Conf., Anchorage, AK, May 8-10, 2002.
Hull, J., D. Ward, "Verification and Validation of Neural Networks for Safety-Critical Applications," Proc. American Control Conf., Anchorage, AK, May 8-10, 2002.
Sharma M., D. Ward, "Flight-Path Angle Control via Neuro-Adaptive Backstepping," Proc. American Control Conf., Anchorage, AK, May 8-10, 2002.
Schierman, J.D, D.G. Ward, J.R. Hull, J.F. Monaco, M.J. Ruth, “Adaptive Guidance Systems for Hypersonic Reusable Launch Vehicles,” Proc. IEEE Aerospace Conference, Big Sky, MT, March, 2001.
Cao, Y., Lin, Z., Ward, D., "Anti-windup design of output tracking systems subject to actuator saturation," IEEE Conference on Decision and Control, Orlando, Florida, December 4-7, 2001.
Cao, Y., Lin, Z., Ward, D., "Output tracking systems subject to actuator saturation and constant disturbance," IEEE Conference on Decision and Control, Orlando, Florida, December 4-7, 2001.
Schierman, J.D., J.R. Hull, and D.G. Ward, Development of Adaptive Guidance Systems for Hypersonic Vehicles with Simulation Support for the X-33 Vehicle, Barron Associates, Inc. Final Technical Rept. for NASA Marshall Space Flight Center, Purchase Order H-33363D, Sept. 2001.
Schierman, J.D., J.R. Hull, D.G. Ward, and M.J. Ruth, Reconfigurable Guidance for Energy Management of Hypersonic Vehicles, Barron Associates, Inc. Final Technical Rept. for NASA Marshall Space Flight Center, Contract NAS 8-01007, Aug. 2001.
Ward, D.G., J.D. Schierman, O.N. Skriloff, and J.F. Monaco, Intelligent Control System Analysis Tool with Autonomous VTOL UAV Landing Demonstration, Barron Associates, Inc. Final Technical Rept. for Naval Surface Warfare Center, Contract N00178-99-C-1010, Aug. 2001.
Cao, Y., Lin, Z., Ward, D., "H-infinity anti-windup design for linear systems subject to input saturation," AIAA Guidance, Navigation, and Control Conference, Montreal, Quebec, August 6-9, 2001.
Bateman, A.J.D., J.R. Hull, D.G. Ward, and J.F. Monaco, Hydra-7 Guidance Law Development: Year 2, Barron Associates, Inc. Final Technical Rept. for Lockheed Martin Advanced Projects, Contract N00174-98-C-0030, May 2001.
Cao, Y., Lin, Z., Ward, D., "An anti-windup approach to enlarged domain of attraction for linear systems subject to actuator saturation," Conference of Information Sciences and Systems, Johns Hopkins University, March 21-23, 2001.
Schierman, J.D., D.G. Ward, J.F. Monaco, J.R. Hull, and M.J. Ruth, Adaptive Guidance Systems for Hypersonic Vehicles with Reconfigurable Inner-Loop Control, Barron Associates, Inc. Final Technical Rept. for Air Force Research Laboratory, Contract F33615-00-C-3036, Feb. 2001.
Schierman, J.D, D.G. Ward, J.F. Monaco, J.F., J.R. Hull, and T.H. Lawrence, "On-Line Identification and Nonlinear Control of Rotorcraft/External-Load Systems," Proc. AIAA Guidance, Navigation, and Control Conf., Denver, CO, Aug. 2000, AIAA Paper No. 2000-4042.
Monaco, J.F. and D.G. Ward, Retrofit Reconfigurable Controllers, Barron Associates, Inc. Final Technical Rept. for Naval Air Warfare Center – Aircraft Division, Contract N68335-00-C-0127, May 2000.
Monaco, J.F. and D.G. Ward, Algorithms and Tools for Automated Maintenance of Simulation Databases, Barron Associates, Inc. Final Technical Rept. for Air Force Flight Test Center, Contract F04611-99-C-0055, Mar. 2000.
Eberhardt, R.L., M.A. Niestroy, G.S. Tallant, J.F. Monaco, and D.G. Ward, Reconfigurable Systems for Tailless Fighter Aircraft, Lockheed Martin Tactical Aircraft Systems and Barron Associates, Inc. Final Technical Rept. for Air Force Research Laboratory, Contract F33615-96-C-3611, Nov. 1999.
Bateman, A.J.D., D.G. Ward, R.L. Barron, J.F. Monaco, and J.R. Hull, Hydra-7 Guidance Law Development, Barron Associates, Inc. Final Technical Rept. for Lockheed Martin Advanced Projects, Contract N00174-98-C-0030, Nov. 1999.
Eberhardt, R.L., M.A. Niestroy, G.S. Tallant, J.F. Monaco, and D.G. Ward, RESTORE System Design Document, Oct. 1999.
Bateman, A.J.D., D.G. Ward, R.L. Barron, and M.S. Whalley, "Piloted simulation evaluation of a neural network limit avoidance system for rotorcraft," Proc. AIAA Guidance, Navigation, and Control Conf., Portland, OR, Aug. 1999.
Ward, D.G., J.F. Monaco, and J.D. Schierman, "Reconfigurable control for VTOL UAV shipboard landing," Proc. AIAA Guidance, Navigation, and Control Conf., Portland, OR, Aug. 1999.
Ward, D.G., A.K. Ishihara, and Z. Lin, Globally Stable Design and Analysis Tools for Reconfigurable Systems with Saturating Actuators, Barron Associates, Inc. Final Technical Rept. for NASA Langley Research Center, Contract NAS1-99003, June 1999.
Monaco, J.F., and D.G. Ward, Reinforcement Learning for Automated Information Gathering, Barron Associates, Inc. Final Technical Rept. for NASA Ames Research Center, Contract NAS2-99016, June 1999.
Parker, Jr., B.E., D.G. Ward, B.R. Clark, E.C. Larson, D.P. Wipf, F.R. Koenig, C. Davis, K. Elliott, and A. Haverson, Costing of Nursing Quality Indicators, Barron Associates, Inc. Final Technical Rept. for the American Nurses Association, Funding Agreement No. DNPCNP050198, Feb. 1999.
Bateman, A.J.D., D.G. Ward, J.F. Monaco, and F.R. Koenig, Tactile Cueing for PIO Avoidance in Manned and Unmanned Aircraft, Barron Associates, Inc. Final Technical Rept. for Air Force Research Laboratory, Contract F41624-98-C-5034, Mar. 1999.
Ward, D.G., J.F. Monaco, and M. Bodson, "Development and Flight Testing of a Parameter Identification Algorithm for Reconfigurable Control," AIAA J. Guidance, Control, and Dynamics, Vol. 21, No. 6, Nov. - Dec. 1998, pp. 948-956.
Bateman, A.J.D., D.G. Ward, R.L. Barron, and M.S. Whalley, Neural Network Limit Avoidance System for Rotorcraft, Barron Associates, Inc. Final Technical Rept. for Aviation Applied Technologies Directorate, U.S. Army Aviation and Missile Command, Contract DAAJ02-96-C-0031, Oct. 1998.
Ward, D.G., J.F. Monaco, and L.E. Funderburg, Intelligent Reconfigurable Control for Systems with Multiple Effectors, Barron Associates, Inc. Final Technical Rept. for Naval Surface Warfare Center, Contract N00178-98-C-1009, May 1998.
Monaco, J.F., D.G. Ward, and A.G. Barto, "Automatic aircraft recovery via reinforcement learning: Initial experiments," Advances in Neural Information Processing Systems 10, (M.I. Jordan, M.J. Kearns, and S.A. Solla, Eds., MIT Press, 1998, pp. 1022-1028.
Monaco, J.F. and D.G. Ward, Reinforcement Learning for Avionics Applications, Barron Associates, Inc. Final Technical Rept. for Air Force Materiel Command, Contract F33615-97-C-1059, Jan. 1998.
Ward, D.G. and R. Dale Salmons, Target Discrimination for Subsurface Ordnance Characterization, Barron Associates, Inc. Final Technical Rept. for Air Force Wright Laboratory, Contract F08637-96-C-6013, Nov. 1997.
Monaco, J.F., D.G. Ward, and R.A. Bird, "Implementation and flight test assessment of an adaptive, reconfigurable flight control system," Proc. AIAA Guidance Navigation and Control Conf., New Orleans, LA, Aug. 1997.
Ward, D.G., J.F. Monaco, B.E. Parker, Jr., and T.A. Hamilton, Power Node Control Center Concept Feasibility Study, Barron Associates, Inc. Phase I Final Technical Rept. to SPD Electrical Systems, Mar. 1997.
Monaco, J.F. and D.G. Ward, Reinforcement Learning for Flight Control Systems, Barron Associates, Inc. Final Technical Rept. for Naval Air Warfare Center, Contract N62269-96-C-0080, Dec. 1996.
Ward, D.G., J.F. Monaco, R.A. Bird, R.L. Barron, J.C. Virnig, and T.F. Landers, Self-Designing Controller: Design, Simulation, and Flight Test Evaluation, Barron Associates, Inc. Final Technical Rept. for Air Force Office of Scientific Research, Contract F49620-94-C-0087, Nov. 1996.
Ward, D.G., R.L. Barron, J.F. Monaco, Y-J.P. Wei, and T.J. Molnar, "Agile nonlinear receding-horizon optimal control law using neural models of stability and control derivatives," Proc. 1996 NASA High-Angle-of-Attack Technology Conf., Hampton, VA, Sep. 1996.
Ward, D.G., R.L. Barron, J.F. Monaco, R.A. Bird, and Y-J.P. Wei, Neural Network Flight Control System, Barron Associates, Inc. Final Technical Rept. for WL Flight Dynamics Directorate, Contract F33615-93-C-3612, WL-TR-96-3052, Feb. 1996.
Ward, D.G and R.L. Barron, "A self-designing receding horizon optimal flight controller," Proc. 1995 Automatic Control Conf., Seattle, WA, Jun. 1995.
Ward, D.G, "Generalized networks for complex function modeling," Proc. IEEE Systems, Man, & Cybernetics (SMC-94) Conf., Oct. 2-5, 1994.
Ward, D.G, R.L. Barron, M.P. Carley, and T.J. Curtis, "Real-time parameter identification for self-designing flight control," Proc. Nat'l Aerospace and Electronics Conf. (NAECON), Dayton, OH, May 1994.
Ward, D.G. and R.L. Barron, Self-Designing Flight Control Using Modified Sequential Least Squares Parameter Estimation and Optimal Receding Horizon Control Laws, Barron Associates, Inc. Final Technical Rept. for AFOSR, Contract F49620-93-C-0044, Mar. 14, 1994.
Ward, D.G., B.E. Parker, Jr., and R.L. Barron, Principles of Function Estimation Using Artificial Neural Networks, Barron Associates, Inc. Internal Technical Document, Sep. 1993.
Ward, D.G., R.L. Barron, and B.E. Parker, Jr., Application of Polynomial Neural Networks to Classification of Acoustic Warfare Signals, Barron Associates, Inc. Final Technical Rept. for ONR, Contract N00014-89-C-0137, Apr. 1993.
Ward, D.G., B.E. Parker, Jr., C.M. Hawes, and R.L. Barron, Active Control of a Multivariable System Via Polynomial Neural Networks, Barron Associates, Inc. Final Technical Rept. for ONR, Contract N00014-89-C-0137, Aug. 1992.
Ward, D.G., B.E. Parker, Jr., and R.L. Barron, Active Control of Complex Systems Via Dynamic (Recurrent) Neural Networks, Barron Associates, Inc. Task Final Technical Rept. for ONR, Contract N00014-89-C-0137, May 1992.
Ward, D.G., R.L. Barron, and B.E. Parker, Jr., Active Control of Complex Systems Using Static and Dynamic Polynomial Neural Networks, Fourth Review of the ONR Accelerated Research Initiative on Active Control, Apr. 1992.
Ward, D.G. and R.S. Bahiti, "Parallel Algorithms and Architectures for Kalman Filters," IEEE Conf. on Decision and Control, Jan. 1987.
Ward, D.G., An Investigation of Parallel Algorithms and Architectures for the Kalman Filter, Master's Thesis, Rensselaer Polytechnic Institute, May 1986.
Ward, D.G., Recursive Maximum Likelihood Identification of Discrete Linear Systems, Control Technology Branch Internal Rept., GE Corporate Research and Development Center, July 1985.
Joining Barron Associates in 1991, Mr. Ward has concentrated on development of algorithms for stochastic optimization of complex systems, nonlinear inductive modeling using statistical and artificial neural networks, robust on-line parameter identification and receding-horizon optimal control. His algorithms for nonlinear function estimation using artificial neural networks form the basis of a number of commercial software products. He has led Barron Associates' work in Modeling Algorithms and in Flight Controls Research since 1993.