CyPhyLab

News

10/22/09Pessoa, a tool for embedded control software synthesis, is released.

09/28/09: NSF funds Prof. Majumdar and Prof. Tabuada to close the gap in controller synthesis.

06/15/09Prof. Paulo Tabuada receives the 2009 AACC Donald P. Eckman award.

06/15/09New book on Hybrid Systems already available online.

05/11/09Georgia Tech Summer School on Cyber-Physical Systems

01/12/09: New journal IEEE Embedded Systems Letters. Consider submitting your best work!

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Publications

This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.

Preprints

Approximate time-optimal control via approximate alternating simulations
Manuel Mazo Jr. and Paulo Tabuada
Submitted for publication, October 2009.
PDF file

Symbolic models for nonlinear control systems without stability assumptions
Majid Zamani, Giordano Pola, and Paulo Tabuada
Submitted for publication, October 2009.
PDF file

Self-Triggered Control: trading actuation for computation
Manuel Mazo Jr., Adolfo Anta, and Paulo Tabuada
Submited for publication, June 2009.
arXiv:0906.3588

On the benefits of relaxing the periodicity assumption for networked control systems over CAN
Adolfo Anta and Paulo Tabuada
Real Time Systems Symposium, December 2009 (To appear).
PDF file

Symbolic models for nonlinear time-delay systems using approximate bisimulations
Giordano Pola, Pierdomenico Pepe, Maria D. Di Benedetto, and Paulo Tabuada
Submited for publication, March 2009.
arXiv: 0903.0361

Isochronous manifolds in self-triggered control
A. Anta and P. Tabuada
48th IEEE Conference on Decision and Control, December 2009 (To appear).
PDF file


Input-to-state stability of self-triggered control systems
M. Mazo Jr. and P. Tabuada
48th IEEE Conference on Decision and Control, December 2009 (To appear).
PDF file

A symbolic model approach to the digital control of time-delay systems
G. Pola, P. Pepe, M. Domenica Di Benedetto, and P. Tabuada
48th IEEE Conference on Decision and Control, December 2009 (To appear).


To sample or not to sample: Self-triggered control for nonlinear systems
Adolfo Anta and Paulo Tabuada
Accepted for publication in IEEE Transactions on Automatic Control.
arXiv:0806.0709

Approximately bisimilar symbolic models for incrementally stable switched systems
Antoine Girard, Giordano Pola and Paulo Tabuada
To appear in IEEE Transactions on Automatic Control.
arXiv:0807.5022

Books

Verification and Control of Hybrid Systems: A Symbolic Approach
Paulo Tabuada
Springer, 2009.
Available online through SpringerLink





Hybrid Systems: Computation and Control (HSCC'09)

Rupak Majumdar and Paulo Tabuada, (Eds.)
Volume 5469 of Lecture Notes in Computer Science
Springer, 2009.







Networked Embedded Sensing and Control

Panos J. Antsaklis and Paulo Tabuada, (Eds.)
Volume 331 of Lecture Notes in Control and Information Sciences
Springer, 2006.







Journal papers

To sample or not to sample: Self-triggered control for nonlinear systems
Adolfo Anta and Paulo Tabuada
Accepted for publication in IEEE Transactions on Automatic Control.
arXiv:0806.0709

Approximately bisimilar symbolic models for incrementally stable switched systems
Antoine Girard, Giordano Pola and Paulo Tabuada
To appear in IEEE Transactions on Automatic Control.
arXiv:0807.5022

Symbolic models for nonlinear control systems: Alternating approximate bisimulations
Giordano Pola and Paulo Tabuada
SIAM Journal on Control and Optimization, 48(2), 719-733, 2009.
arXiv:0707.4205 

Approximately bisimilar symbolic models for nonlinear control systems
Giordano Pola, Antoine Girard and Paulo Tabuada
Automatica, 44(10), 2508-2516, October 2008.
arXiv:0706.0246

An approximate simulation approach to symbolic control
Paulo Tabuada
IEEE Transactions on Automatic Control, 53(6), 1406-1418, July 2008.

Approximate reduction of dynamical systems
Paulo Tabuada, Aaron D. Ames, Agung Julius, and George J. Pappas
Systems and Control Letters, 57(7), 538-545, July 2008.    
DOI:10.1016/j.sysconle.2007.12.005
arXiv:0707.3804

Controller synthesis for bisimulation equivalence
Paulo Tabuada
Systems and Control Letters, 57(6), 443-452, June 2008.    
arXiv:0706.0929

Event-triggered real-time scheduling of stabilizing control tasks
Paulo Tabuada
IEEE Transactions on Automatic Control, 52(9), 1680-1685, September 2007.
DOI:10.1109/TAC.2007.904277
PDF file

Symbolic models for control systems
Paulo Tabuada
Acta Informatica, 43(7), 477-500, February 2007.
Special issue on Hybrid Systems.
PDF file

Linear Time Logic control of discrete-time linear systems
Paulo Tabuada and George J. Pappas
IEEE Transactions on Automatic Control, 51(12), 1862-1877, December 2006
PDF file

Local factorization of trajectory lifting morphisms for single-input affine control systems
Paulo Tabuada
Systems and Control Letters, 55(9), 761-769, September 2006.
PDF file

Symbolic control of linear systems based on symbolic subsystems
Paulo Tabuada
IEEE Transactions on Automatic Control, 51(6), 1003-1013, June 2006.
Special issue on Symbolic Methods for Complex Control Systems.

Bisimulation relations for dynamical, control and hybrid systems
Esfandiar Haghverdi, Paulo Tabuada and George J. Pappas
Theoretical Computer Science, 342(2-3), 229-261, 2005.
PDF file

Motion Feasibility of Multi-Agent Formations
Paulo Tabuada, Pedro Lima and George J. Pappas.
IEEE Transactions on Robotics, 21(3), 387-392, 2005.
PDF file

Quotients of Fully Nonlinear Control Systems
Paulo Tabuada and George J. Pappas.
SIAM Journal on Control and Optimization, 43(5), 1844-1866, 2005.
PDF file

Hierarchical trajectory generation for a class of nonlinear systems
Paulo Tabuada and George J. Pappas.
Automatica, 41(4), 701-708, April 2005.
PDF file, Corrigendum

Bisimilar Control Affine Systems
Paulo Tabuada and George J. Pappas.
Systems and Control Letters, 52(1), 49-58, May 2004.
DOI:10.1016/j.sysconle.2003.09.013
PDF file

Compositional Abstractions of Hybrid Control Systems
Paulo Tabuada, George J. Pappas and Pedro Lima.
Journal of Discrete Event Dynamical Systems, 14(2), 203-238, April 2004.
PDF file

Abstractions of Hamiltonian Control Systems
Paulo Tabuada and George J. Pappas.
Automatica, 39(12), 2025-2033, December 2003.
PDF file

From Nonlinear to Hamiltonian via Feedback
Paulo Tabuada and George J. Pappas.
IEEE Transactions on Automatic Control, 48(8), 1439-1442, August 2003.

Conference papers

On the benefits of relaxing the periodicity assumption for networked control systems over CAN
Adolfo Anta and Paulo Tabuada
Real Time Systems Symposium, December 2009 (To appear).
PDF file

Isochronous manifolds in self-triggered control
A. Anta and P. Tabuada
48th IEEE Conference on Decision and Control, December 2009 (To appear).
PDF file


Input-to-state stability of self-triggered control systems
M. Mazo Jr. and P. Tabuada
48th IEEE Conference on Decision and Control, December 2009 (To appear).

A symbolic model approach to the digital control of time-delay systems
G. Pola, P. Pepe, M. Domenica Di Benedetto, and P. Tabuada
48th IEEE Conference on Decision and Control, December 2009 (To appear).

On Self-Triggered Control for Linear Systems: Guarantees and Complexity
Manuel Mazo Jr., Adolfo Anta and Paulo Tabuada
Proceedings of the 10th European Control Conference, August 2009.
PDF file

Space-time scaling laws for self-triggered control
A. Anta and P. Tabuada
Proceedings of the 47th IEEE Conference on Decision and Control, December 2008.
PDF file

Event-triggered and Self-triggered control over sensor/actuator network
Manuel Mazo Jr. and Paulo Tabuada
Proceedings of the 47th IEEE Conference on Decision and Control, December 2008.
PDF file

Symbolic models for nonlinear control systems affected by disturbances
Giordano Pola and Paulo Tabuada
Proceedings of the 47th Conference on Decision and Control, December 2008.
PDF file

Self-triggered stabilization of homogeneous control systems 
A. Anta and P. Tabuada 
Proceedings of the 2008 American Control Conference, June 2008.
PDF file

On the benefits of relaxing the periodicity assumption for control tasks
A. Anta and P. Tabuada
Proceedings of the 14th IEEE Real-Time and Embedded Technology and Applications Symposium, Work-In-Progress track, April 2008.
PDF file

Symbolic models for nonlinear control systems using approximate bisimulations
Giordano Pola, Antoine Girard and Paulo Tabuada
Proceedings of the 46th IEEE Conference on Decision and Control, 2007.
PDF file

Symbolic models for linear control systems with disturbances
Giordano Pola and Paulo Tabuada
Proceedings of the 46th IEEE Conference on Decision and Control, 2007.
PDF file

Approximate reduction of dynamical systems
Paulo Tabuada, Aaron Ames, Agung Julius and George Pappas
Proceedings of the 45th IEEE Conference on Decision and Control, 2006.
PDF file

Preliminary results on state-triggered scheduling of stabilizing control tasks
Paulo Tabuada and Xiaofeng Wang
Proceedings of the 45th IEEE Conference on Decision and Control, 2006.
PDF file

Symbolic sub-systems and symbolic control of linear systems
Paulo Tabuada.
Proceeding of the 44th IEEE Conference on Decision and Control, Seville, Spain, 2005.
PDF file

On the factorization of trajectory lifting maps
Paulo Tabuada.
Proceeding of the 44th IEEE Conference on Decision and Control, Seville, Spain, 2005.
PDF file


Book Chapters

Approximately bisimilar symbolic models for incrementally stable switched systems
Antoine Girard, Giordano Pola and Paulo Tabuada
Hybrid Systems: Computation and Control 2008
Volume 4981 of Lecture Notes in Computer Science

Approximate simulation relations and finite abstractions of quantized control systems
Paulo Tabuada
Hybrid Systems: Computation and Control
Volume 4416 of Lecture Notes in Computer Science
Springer, April 2007
PDF file

On simulations and bisimulations of general flow systems
Jennifer Davoren and Paulo Tabuada
Hybrid Systems: Computation and Control
Volume 4416 of Lecture Notes in Computer Science
Springer, April 2007

On the stability of Zeno equilibria
Aaron Ames, Paulo Tabuada and Shankar Sastry
Hybrid Systems: Computation and Control
Volume 3927 of Lecture Notes in Computer Science
Springer, March 2006
PDF file

Sensor/actuator abstractions for symbolic embedded control design
Paulo Tabuada
Hybrid Systems: Computation and Control
Volume 3414 of Lecture Notes in Computer Science
Springer, March 2005
PDF file

Open maps, alternating simulations and control synthesis
Paulo Tabuada
15th International Conference on Concurrency Theory
Volume 3170 of Lecture Notes in Computer Science
Springer, September 2004
PDF file

Model Checking LTL over Controllable Linear Systems is Decidable
Paulo Tabuada and George J. Pappas
Hybrid Systems: Computation and Control
Volume 2623 of Lecture Notes in Computer Science
Springer-Verlag, April 2003
PDF file

Bisimulation Relations for Dynamical and Control Systems
Esfandiar Haghverdi, Paulo Tabuada and George J. Pappas
Rick Blute and Peter Selinger eds.
Volume 69 of Electronic Notes in Theoretical Computer Science, Elsevier
PDF file

Composing Abstractions of Hybrid Systems
Paulo Tabuada, George J. Pappas and Pedro Lima
Hybrid Systems: Computaion and Control
Volume 2289 of Lecture Notes in Computer Science
Springer-Verlag, March 2002
PDF file

Hybrid abstractions that preserve timed languages
Paulo Tabuada and George J. Pappas
Hybrid Systems: Computation and Control
Volume 2034 of Lecture Notes in Computer Science, Springer-Verlag, March 2001
PDF file

Satellite Attitude Control Problem
R. Wisniewski, A. Astolfi, T. Bak, M. Blanke, P. Lima, K. Spindler, P. Tabuada and P. Tavares
Chapter in Control of Complex Systems (COSY), Springer-Verlag, Berlin, 2000