Laboratory for Automation and Control University of Florida Jacob Hammer, Director hammer@mst.ufl.edu

LABORATORY FOR AUTOMATION AND CONTROL
UNIVERSITY OF FLORIDA
JACOB HAMMER, DIRECTOR
HAMMER@MST.UFL.EDU

WELCOME!

The Laboratory engages in theoretical
and applied research
in areas related to automation,
control, and mathematical system theory.

Selected publications of Jacob Hammer in pdf format
can be downloaded at this link.

Jacob Hammer, Professor Emeritus

Department of Electrical and Computer Engineering
University of Florida
Gainesville, FL 32611-6130
USA

Email: hammer@mst.ufl.edu

This web page provides information for prospective Visiting Faculty, Postdoctoral Fellows, and Graduate Research Students.

Nonlinear Control Theory;
Linear Control Theory;
Optimal Control Theory;
Control Theory of Asynchronous Sequential Machines
Control Theory of Discrete Systems and Automata;
Filtering theory;
Estimation Theory;
Digital Signal Processing.

Interested visitors and students are welcome! To enhance the prospects of collaboration, visitors and students should have an interest in mathematical control theory. Specific background be acquired during your visit or during your studies here. A basic introduction to mathematical background can be found in the following textbooks (which are widely and cheaply available); however, it is not necessary to master this material before arriving here.

Dear Prospective Visiting Professors, Postdoctoral Fellows, and Graduate Students,

I am always looking for research collaborators who are interested in the mathematical aspects of system theory, control theory, filtering theory, and estimation theory, as well as in mathematics and control of biological systems. If you have such interests, please do not hesitate to contact me by email at hammer@mst.ufl.edu.

B.Sc. - Electrical Engineering (Summa Cum Laude), Technion - Israel Institute of Technology, Haifa, Israel.

M.Sc. - Electrical Engineering (with Distinction), Technion - Israel Institute of Technology, Haifa, Israel.

D.Sc. - Electrical Engineering, Technion - Israel Institute of Technology, Haifa, Israel.

Selected publications of Jacob Hammer in pdf format
can be downloaded at this link.

[1982] "On some properties of conditional moments in nonlinear filtering", SIAM J. Control, Vol. 20, pp. 497-505.

[1983] "Feedback representation of precompensators", Int. J. Control, Vol. 37, pp. 37-61.

[1983] "Pole assignment and minimal feedback design", Int. J. Control, Vol. 37, pp. 63-88.

[1983] "Linear dynamic output feedback: invariants and stability", IEEE Trans. on Automatic Control, Vol. AC-28, pp. 489-496.

[1984] "Nonlinear systems: stability and rationality", Int. J. Control, Vol. 40, pp. 1-35.

[1985] "Nonlinear systems, stabilization, and coprimeness", Int. J. Control, Vol. 42, pp. 1-20.

[1986] "Fraction representations of nonlinear systems: a simplified approach", Int. J. Control, Vol. 46 No. 2, pp. 455-472.

[1988] "Assignment of dynamics for nonlinear recursive feedback systems", Int. J. Control, Vol. 48 No. 3, pp. 1183-1212.

[1991] "State feedback, confinement, and stabilization for nonlinear continuous time systems", International J. Control, Vol. 53, pp. 799-821.

[1994] "Internally stable nonlinear systems with disturbances: a parametrization", IEEE Transactions on Automatic Control, Vol. AC-39, pp. 300 - 314.

[1994] "On some control problems in molecular biology", Proceedings of the IEEE Conference on Decision and Control, December 1994, pp. 4098-4103.

[1995] "On the modeling and control of biological signaling chains", Proceedings of the IEEE Conference on Decision and Control, December 1995, pp. 3742-3752.

[1996] "On the corrective control of sequential machines", International Journal of Control, Vol. 65, pp. 249-276.

[1997] "On the control of sequential machines with disturbances", International Journal of Control, Vol. 67, No. 3, pp. 307-331.

[1998] "Handling disturbances in nonlinear control: the use of state feedback", International Journal of Control, Vol. 70, No. 5, pp. 761-787.

[2000] "Approximate model matching for nonlinear control systems", International Journal of Control, vol. 73, no. 18, pp. 1671-1685.

[2003] “Sturdy control of discrete communication networks, Part I: population control", International Journal of Control vol. 76, No. 6, pp. 618-634.

[2001] "Asymptotic efficiency and admission control for discrete communication networks", Proceedings of the 2001 American Control Conference.

[2002] "Asymptotic efficiency and buffer optimization for discrete communication networks", Proceedings of the 10th Mediterranean Conference on Control and Automation, Lisbon, Portugal, July 2002.

[2003] "On the control of asynchronous machines with races", IEEE Transactions on Automatic Control, vol. 48, no. 6, pp. 1073-1081.

[2002] "Controlling races in asynchronous sequential machines", Proceeding of the IFAC World Congress, Barcelona, July 2002.

[2004] "Tracking and Approximate Model Matching for Nonlinear Systems", International J. of Control, VOL. 77, NO. 14, pp. 1269–1286.

[2004] "High-Gain Tracking for Nonlinear Systems", Proceedings of the American Control Conference, Portland, Oregon, June 2005.

[2004] "High-Gain Control of Nonlinear Minimum-Phase Systems", Proceedings of the American Control Conference, Portland, Oregon, June 2005.

[2006] "On the Control of Asynchronous Sequential Machines with Infinite Cycles," International Journal of Control, Vol. 79, No. 7, pp. 764–785.

[2006] "Stable Realizations of Asynchronous Sequential Machines with Infinite Cycles," Proceedings of the 2006 Asian Control Conference, Bali, Indonesia.

[2006] "Controllers for asynchronous machines with infinite cycles," Proceedings of the 17th International Symposium on Mathematical Theory of Networks and Systems, Kyoto, Japan.

[2007] "High Gain Feedback, Tolerance, and Stabilization of Linear Systems", International J. of Control, Vol. 80, Number 4, pp. 593–610.

[2007] "Tolerable Inaccuracies in Linear State Feedback", American Control Conference, New York, NY, July 2007.

[2007] "Optimizing System Performance in the Event of Feedback Failure", Proceedings of the 6th International Congress on Industrial and Applied Mathematics, Zurich, Switzerland, July 16-20, 2007; Proc. Appl. Math. Mech. 7, 2060009– 2060010 (2007).

[2008] "Counteracting the Effects of Adversarial Inputs on Asynchronous Sequential Machines", Proceedings of the IFAC World Congress, Seul, Korea, July 2008.

[2008] "Preserving System Performance During Feedback Failure", Proceedings of the IFAC World Congress, Seul, Korea, July 2008.

[2008] "State Feedback Control of Asynchronous Sequential Machines with Adversarial Inputs", International J. Control, Vol. 81, No. 12, pp. 1910-1929.

[2008] "Control During Feedback Failure: Characteristics of the Optimal Solution", Proceedings of the 17th Mediterranean Conference on Control and Automation, Thessaloniki, Greece, June 24-26, 2009 (to appear).

[2009] "Optimal Control During Feedback Failure", International J. of Control, Vol. 82, No. 8, pp. 1448-1468.

[2008] "Bang-Bang Functions: Universal Approximants for the Solution of Min-Max Optimal Control Problems", Proceedings of the International Symposium On Dynamic Games and Applications, Wroclaw, Poland, June 2008.

[2008] "Robust Optimal Control: Maximum Time of Low-Error Operation", Proceedings of the Fifth International Conference of Applied Mathematics and Computing, Plovdiv, Bulgaria, August 12-18, 2008.

[2008] "Robust Optimal Control: Low Error Operation for The Longest Time", International Journal of Control (to appear).

[2010] "Input/Output Control of Asynchronous Sequential Machines with Races", International Journal of Control, Vol. 83, No. 1, January 2010, pp. 125–144.

[2008] "Generalized Realizations and Output Feedback Control of Asynchronous Sequential Machines with Races", Proceeding of the European Control Conference, Budapest, Hungary, August 2009.

[2009] "Using Bursts to Overcome The Effects of Adversarial Interventions on Asynchronous Sequential Machines", Proceedings of the Asian Control Conference, Hong-Kong, August 27-29, 2009, pp. 943-948.

[2009] "Optimal Low Error Control of Disturbed Systems", Proceedings of the IEEE Conference on Systems, Man, and Cybernetics, San Antonio, Texas, USA, October 11-14, 2009.

[2010] "Asynchronous Sequential Machines with Adversarial Intervention: the Use of Bursts", International Journal of Control, Vol. 83, No. 5, 956–969.

[2012] "Bursts and Output Feedback Control of Non-Deterministic Asynchronous Sequential Machines", European Journal of Control, Vol. 18 no. 3, pp. 286-300.

[2010] "Output Feedback and Bursts: Overcoming Uncertainty in Asynchronous Sequential Machines", Proceedings of the International Federation of Automatic Control Symposium on Nonlinear Control Systems, Bologna, Italy, September 2010.

[2012] "Adaptive Control of Asynchronous Sequential Machines with State Feedback", European Journal of Control, vol. 18 no. 6, pp. 503-527.

[2011] "On the Control of Indeterminate Asynchronous Sequential Machines: An Algebraic Framework", Proceedings of the 2011 IEEE International Conference on Intelligent Computing and Intelligent Systems (ICIS 2011), Guangzhou, China, Nov. 18-20, 2011.

[2011] "Adaptive Control of Asynchronous Sequential Machines: An Algebraic Formulation", Proceedings of the 16th IFAC Symposium on System Identification (SYSID 2012), Brussels, Belgium July 2012.

”State Feedback Control of Nonlinear Systems: A Simple Approach”, International J. of Control, Vol. 87, No. 1, pp. 143-160.

”A Simple Approach to Nonlinear State Feedback Design”, Proceedings of the Asian Control Conference, pp. 2218-2224, Istanbul, Turkey, June 2013.

”On Simple Design of Nonlinear Observers for Robust Stabilization of Nonlinear Systems”, Transactions of the ASME, Journal of Dynamic Systems, Measurement, and Control, Vol. 137, pp. 071011-1 to 071011-10, July 2015.

[2016] ”Static State Feedback Control of Asynchronous Sequential Machines”, International Journal of General Systems (to appear).

”Robust Stabilization of Nonlinear Systems, the Separation Theorem, and Asymptotic Observers”, Proceedings of the 18th International Conference on System Theory, Control, and Computing, Sinaia, Romania, October 2014.

[2014] ”Asynchronous Sequential Machines: Static State Feedback and Model Matching”, Proceedings of the International Symposium on the Mathematical Theory of Networks and Systems, Groningen, The Netherlands, July 2014.

”Automatic Defensive Control of Asynchronous Sequential Machines”, International Journal of Control, Vol. 89, No. 1, 193–209.

”Defensive State Feedback Control of Asynchronous Sequential Machines”, Proceedings of The Mediterranean Conference on Control and Automation, June 16-19, 2015, Malaga, Spain.

”Fastest Recovery After Feedback Disruption”, International Journal of Control, vol. 89 no. 10, pp. 2121-2138.

”Recovering from Feedback Failure in Minimal Time”, 10th IFAC Symposium on Nonlinear Control Systems, August 2016, Monterey, CA, USA.

”Optimal Robust Control of Nonlinear Time-Delay Systems: Maintaining Low Operating Errors During Feedback Outages”, International Journal of Control, Vol 91, No. 2, pp. 297-319.

”Low Error Operation in Open Loop: Nonlinear Systems with Time Delay”, Proceedings of the IFAC World Congress, Toulouse, France, July 2017.

”Fastest Recovery After Feedback Disruption: Nonlinear Delay-Differential Systems”, International Journal of Control, Vol. 92, No. 4, pp. 717–733.

”Quick Recovery After Feedback Loss: Delay-Differential Systems”, Proceedings of the International Conference on Control, Automation, and Systems, Jeju, Korea, October 2017.

”Fastest Recovery from Feedback Loss: Bounded Overshoot”, International Journal of Control, Vol. 92, No. 9, 2077–2090.

”Recovering in Minimal Time from Feedback Loss: Bounded Overshoots”, Proceedings of the Americal Control Conference, Milwaukee, Wisconsin, June 2018, pp. 4670-4675.

”Periodic Sampling: Maximizing the Sampling Period”, International Journal of Control, Vol. 93, No. 6, 1303–1316.

”Sampled-Data Systems: Maximal Sampling Period”, Proceedings of the 57th Annual Allerton Conference on Communication, Control, and Computing, University of Illinois, Urbana, September 2019.

”Optimal Robust State-Feedback Control of Nonlinear Systems: Minimal Time to Target”, International Journal of Control, Vol. 94, No. 2, pp. 433–451.

”Minimal Time Control of Nonlinear Systems: Optimal Robust State-Feedback”, Proceedings of the 11th IFAC Symposium on Nonlinear Control Systems, Vienna, Austria, September 2019. Elsevier, Amsterdam, the Netherlands.

”Optimal Robust Tracking by State Feedback: Infinite Horizon”, International Journal of Control, Vol. 95, No. 4, 1070–1085.

”Nonlinear Tracking on the Infinite Horizon: Optimal Robust State Feedback”, in Proceedings of the International Symposium on Mathematical Theory of Networks and Systems, Cambridge University, United Kingdom, August 2020.

”Optimal Robust Decentralized Control of Large-Scale Nonlinear Systems: Tracking on the Infinite Time Horizon”, submitted for publication.

”Decentralized Control of Large-Scale Nonlinear Systems: Optimal Robust Tracking”, Proceedings of the 2021 Mediterranean Control Conference, June 22-25, 2021, Bari, Puglia, Italy.

”Optimal Robust Control of Nonlinear Systems: Inter-Sample Optimization in Sampled-Data Control”, International Journal of Control (to appear).

”Bang-Bang Feedback Controllers with Minimal Switching”, submitted for publication

”On Global Feedback Control of Unknown Nonlinear Systems”, International Journal of Control (to appear).

”Nonlinear Sampled-Data Control:Optimal Robust Inter-Sample Tracking”, submitter for publication

”Robust Global Control of Unknown Nonlinear Systems”, submitted for publication

LABORATORY FOR AUTOMATION AND CONTROL UNIVERSITY OF FLORIDA JACOB HAMMER, DIRECTOR HAMMER@MST.UFL.EDU

LABORATORY FOR AUTOMATION AND CONTROL
UNIVERSITY OF FLORIDA
JACOB HAMMER, DIRECTOR
HAMMER@MST.UFL.EDU