Haris E. Psillakis

Lecturer

Division of Signals, Controls and Robotics

School of Electrical and Computer Engineering

National Technical University of Athens (NTUA)

Contact Information

E-mail:  hpsilakis@central.ntua.gr

Address:  National Technical University of Athens

                School of Electronic & Computer Engineering

                73100 GR, Athens, Greece

Research Interests

• Adaptive Control
• Nonlinear Control
• Intelligent Control
• Multi-Agent Systems
  
• Stochastic Systems
• Power Systems
• Robotics
• Uncalibrated Visual Servoing
  

Education

• University of Patras

• University of Patras

Publications

Journal Papers

1. Q. Wang, H.E. Psillakis and C. Sun, "Adaptive cooperative control with guaranteed convergence in time-varying networks of nonlinear dynamical systems," IEEE Trans.  Cybernetics, (in press) doi: 10.1109/TCYB.2019.2916563

2. H.E. Psillakis, "PI consensus error transformation for adaptive cooperative control of nonlinear multi-agent systems," Journal of the Franklin Institute, (in press), doi:10.1016/j.jfranklin.2019.09.024 
   

3. Q. Wang, H.E. Psillakis and C. Sun, "Cooperative control of multiple high-order agents with nonidentical unknown control directions under fixed and time-varying topologies," IEEE Trans. Systems, Man and Cybernetics: Systems, (in press) doi: 10.1109/TSMC.2019.2916641 
   

4. Q. Wang, H.E. Psillakis and C. Sun, "Cooperative control of multiple agents with unknown high-frequency gain signs under unbalanced and switching topologies," IEEE Trans. Automatic Control, vol. 64, no. 6, pp. 2495-2501, June 2019. [PDF]

5. H.E. Psillakis and A.-R. Lagos, "Unifying adaptive control with the nonlinear PI methodology: Designs for unknown strict-feedback nonlinear systems with nonsmooth actuator nonlinearities," Int. J. Adapt. Control & Signal Process., vol. 32, Issue 2, pp. 362-377, Feb. 2018. [PDF]

6. H.E. Psillakis, "Consensus in networks of agents with unknown high-frequency gain signs and switching topology," IEEE Trans. Automatic Control, vol. 62, no. 8, pp. 3993-3998, Aug. 2017. [PDF]

7. H.E. Psillakis, "An extension of the Georgiou-Smith example: Boundedness and attractivity in the presence of unmodelled dynamics via nonlinear PI control," Systems and Control Letters, vol. 92, pp. 1-4, 2016. [PDF]

8. H.E. Psillakis, "Integrator backstepping with the nonlinear PI method: An integral equation approach," European Journal of Control, vol. 28, pp. 49-55, 2016. [PDF]

9. H.E. Psillakis and A.T. Alexandridis, "Discussion on:" A Saturated PI Velocity Controller for Voltage-Fed Induction Motors", European Journal of Control, vol. 18, no. 1, pp. 69-70, 2012.

10. H.E. Psillakis, M.A. Christodoulou, T. Giotis and Y. Boutalis , "An observer approach for deterministic learning using patchy neural networks with applications to Fuzzy Cognitive Networks," Int. J. Artificial Life Research, vol. 2, no. 1, pp. 1-16, 2011.

11. H.E. Psillakis, "Further results on the use of Nussbaum gains in adaptive neural network control," IEEE Trans. Automatic Control, vol. 55, no. 12, pp. 2841-2846, Dec. 2010.

12. H.E. Psillakis, "Projection-based adaptive neurocontrol with switching logic deadzone tuning," IEEE Trans. Neural Networks, vol. 20, no. 9, pp. 1520-1527, Sept. 2009.

13. H.E. Psillakis, "Sampled-data adaptive NN tracking control of uncertain nonlinear systems," IEEE Trans. Neural Networks, vol. 20, no. 2, pp. 336-355, Feb. 2009.

14. H.E. Psillakis and A.T. Alexandridis, "NN-based adaptive tracking control of uncertain nonlinear systems disturbed by unknown covariance noise," IEEE Trans. Neural Networks, vol. 18, no. 6, pp. 1830-1835, Nov. 2007.

15. H.E. Psillakis and A.T. Alexandridis, "A simple nonlinear adaptive-fuzzy passivity-based control of power systems," Nonlinear Dynamics & Systems Theory: an Int. J. of Res. & Surveys, vol. 7, no. 1, pp. 51-67, 2007.

16. A.T. Alexandridis and H.E. Psillakis, "The inverse optimal LQR problem and its relation to passivity and eigenvalue assignment," Int. J. of Tom. & Stat., vol. 5, w05, pp. 133-139, 2007.

17. H.E. Psillakis and A.T. Alexandridis, "Adaptive neural motion control of n-link robotic manipulators subject to unknown disturbances and stochastic perturbations," IEE Proc.-Control Theory & Applications, vol. 153, no. 2, pp. 127-138, 2006.

18. H.E. Psillakis and A.T. Alexandridis, "Adaptive tracking control for stochastic uncertain nonlinear systems satisfying short- and long-term cost criteria," Int. J. Control, vol. 79, no. 2, pp. 107-118, 2006.

19. H.E. Psillakis and A.T. Alexandridis, "A new excitation control of multimachine power systems, I: Decentralized nonlinear adaptive control design and stability analysis," Int. J. Control, Automation & Systems, vol. 3, no. 2, pp. 278-287, 2005.

20. H.E. Psillakis and A.T. Alexandridis, "A new excitation control of multimachine power systems, II: Robustness and disturbance attenuation analysis," Int. J. Control, Automation & Systems, vol. 3, no. 2, pp. 288-295, 2005.

21. E.A. Androulidakis, A.T. Alexandridis, H.E. Psillakis and D.P. Agoris, "Effects of power system deregulation on control design and on high-voltage grid structure and performance," WSEAS Trans. Circ. & Syst., vol. 9, no. 4, pp. 133-139, 2005.

Conference Proceedings

1. H.E. Psillakis, "Further results on robustness of the nonlinear PI control method: the ignored actuator dynamics case," 24th Mediterranean Conference on Control and Automation (MED), Athens, Greece, June 21-24, 2016.

2. P.M. Chavatzopoulos, T. Giotis, M. Christodoulou and H. Psillakis, "Using RISE Observer to Implement Patchy Neural Network for the Identification of "Wing Rock" Phenomenon on Slender Delta 80° Wings", Proceedings of 13th Int. Conf. on Engineering Applications of Neural Networks, EANN 2012, London, UK, September 20-23, 2012.

3. H. E. Psillakis, "Improving transient performance of Nussbaum-gain based controllers with barrier Lyapunov functions", Proceedings of the IASTED International Conference Control and Applications ( 2012) , pp. 93-97, Crete, Greece, June 18 - 20, 2012.

4. T. Giotis, H.E. Psillakis, A. Panagiotidou, N. Chatzidamianou and M.A. Christodoulou, "EGFR Signaling Pathway Estimation Using a RISE-based Asymptotic Observer," 19th Mediterranean Conference on Control and Automation, Corfu, Greece, June 20-23, 2011.

5. H. E. Psillakis, Y. Boutalis, T. Giotis and M.A. Christodoulou, "Adaptive identification of Fuzzy Cognitive Networks," 4th Int. Symp. Comm., Control & Sign. Process., ISCCSP 2010, Limassol, Cyprus, March 2010.

6. H.E. Psillakis, "An adaptive NN controller with second order SMC-based NN weight update law for asymptotic tracking," Int. Conf. Artif. Neural Networks, ICANN 2009, Limassol, Cyprus, Sept. 2009.

7. H.E. Psillakis, "High-order fuzzy switching neural networks: Application to the tracking control of a class of uncertain SISO nonlinear systems," Int. Conf. Artif. Neural Networks, ICANN 2009,

   Limassol, Cyprus, Sept. 2009.

8. A.T. Alexandridis and H.E. Psillakis, "Guaranteeing passivity by output feedback gain construction," European Control Conference, ECC'07, Kos, Greece, pp. 518-523, 2007.

9. H.E. Psillakis and A.T. Alexandridis, "Inverted pendulum angle tracking control subject to uncertainties and stochastic perturbations," 8th IFAC Symp. Robot Control, SYROCO'06, Bologna, Italy, 2006.

10. H.E. Psillakis and A.T. Alexandridis, "Adaptive neural tracking for a class of uncertain and stochastic nonlinear systems," Joint European Control Conference & Conference on Decision & Control, ECC-CDC'05, Seville, Spain, pp. 7822-7827, 2005.

11. H.E. Psillakis and A.T. Alexandridis, "Adaptive gain sliding mode control for multimachine power systems," IFAC'05 Conference, Prague, 2005.

12. H.E. Psillakis and A.T. Alexandridis, "Chaos synchronization with uncertainties by NN-control design," Int. Symp. Intelligent Control, ISIC'05, Limassol, Cyprus, pp. 462-466, 2005.

13. H.E. Psillakis and A.T. Alexandridis, "Boundary layer sliding mode control for multimachine power systems improved by antiwindup integral action," Int. Conf. on Control & Automation, ICCA'05 Conference, Budapest, Hungary, pp. 497-502, 2005.

14. H.E. Psillakis and A.T. Alexandridis, "Passivity margin and related bounds for linear systems," IEEE 13th Mediterranean Conf. on Control & Automation, MED'05 Conference, Limassol, Cyprus, pp. 785-790, 2005.

15. E.A. Androulidakis, A.T. Alexandridis, H.E. Psillakis and D.P. Agoris, "Challenges and trends in restructuring power systems due to deregulation," WSEAS Int. Conf. Power Systems & Electromagnetic Compatibility-PSE'05 Conference, Corfu, Greece, pp. 49-54, 2005.

16. H.E. Psillakis and A.T. Alexandridis, "Sensitivity integral relations for passive systems: analysis and explicit calculations," UKACC-IEE Int. Conf. on Control, CONTROL'04 Conference, University of Bath, UK, 2004.

17. H.E. Psillakis and A.T. Alexandridis, "Energy-based gains and integral bounds for passive systems: analysis and explicit calculations," IEEE 12th Mediterranean Conf. on Control & Automation, MED'04 Conference, Izmir, Turkey, 2004.

18. H.E. Psillakis and A.T. Alexandridis, "Transient stability of multimachine power systems with decentralized finite-time excitation control," Series on Energy and Power Systems (presented in 4th IASTED Int. Conference on Power & Energy Systems, PES'04 Conference), Rhodes, Greece, 2004.

19. A.T. Alexandridis and H.E. Psillakis, "PID control: An energy shaping tool for passive systems," Series on Energy and Power Systems (presented in 3th IASTED Int. Conference on Power & Energy Systems, PES'03 Conference), Marbella, Spain, pp. 195-198, 2003.