Hisaya Fujioka

Hisaya Fujioka
Department of Applied Analysis and Complex Dynamical Systems,
Graduate School of Informatics, Kyoto University
Kyoto 606-8501, Japan

email:	fujioka [at] i.kyoto-u.ac.jp
phone/fax:	+81-75-753-5902/5517

Education/Position

M.E.	Tokyo Institute of Technology, 1992
Ph.D.	Tokyo Institute of Technology, 1995

1995-1997:	Research Associate, Faculty of Engineering, Osaka University
1998-present:	Associate Professor, Graduate School of Informatics, Kyoto University

Research

Theory and Applications in Control Engineering

Sampled-data control
Robust control
CACSD

Recent Teaching

Linear Control Theory (undergraduate level)
Signals and Systems (undergraduate level)
Topics in Intelligent Control Systems (graduate level)

Recent Activities

2010

H. Fujioka, T. Nakai and L. Hetel, "A switched Lyapunov function approach to stability analysis of non-uniformly sampled-data systems," to appear in Proc. 2010 American Control Conference, 2010.
H. Fujioka and T. Nakai, "Stabilizing systems with aperiodic sample-and-hold devices: State feedback case," IET Control Theory & Applications, vol. 4, pp. 265-272, 2010.
H. Fujioka and S. Hara, "Output regulation for sampled-data feedback control systems: Internal model principle and H_&infin servo controller synthesis," Journal of Chinese Institute of Engineers, vol. 33, pp. 335-245, 2010.
Y. Oishi and H. Fujioka, "Stability and stabilization of aperiodic sampled-data control systems using robust linear matrix inequalities," Automatica, vol. 46, pp. 1327-1333, 2010.

2009

C.-Y. Kao, U. Jönsson, and H. Fujioka, "Characterization of robust stability of a class of interconnected systems," Automatica, vol. 45, pp. 217-224, 2009.
T. Vongsaroj, Y. Kobayashi, H. Fujioka, and S. Yanabe, "A precise speed tracking control of ultrasonic motors via sampled-data H_&infin control," SICE JCMSI, vol. 2, pp. 27-31, 2009.
K. Sato, Y. Yamada, and H. Fujioka, "Mean square optimal hedging with non-uniform rebalancing intervals," SICE JCMSI, vol. 2, pp. 32-35, 2009.
H. Fujioka, "Stability analysis of systems with aperiodic sample-and-hold devices," Automatica, vol. 45, pp. 771-775, 2009.
H. Fujioka and U. T. Jönsson, "Characterizing uncertain time-varying parameters with periodic reset," in Proc. 2009 American Control Conference, pp. 3754-3756, 2009 (Best Presentation Award at Session ThC15).
seminar @ Department of Electrical and Computer Engineering, University of Alberta (15-Jun-2009)
Y. Kobayashi, H. Fujioka, N. Jinbo, and Y. Hara, "Performance limitations by structures of control sources in active noise control systems of ducts," in Proc. 16th International Congress on Sound and Vibration, 2009.
H. Fujioka, C.-Y. Kao, S. Almér, and U. T. Jönsson, "Robust tracking with H_&infin performance for PWM systems," Automatica, vol. 45, pp. 1808-1818, 2009.
H. Fujioka, "A discrete-time approach to stability analysis of systems with aperiodic sample-and-hold devices," IEEE Transactions on Automatic C ontrol, vol. 54, pp. 2440-2445, 2009.
Y. Oishi and H. Fujioka, "Stability and stabilization of aperiodic sampled-data control systems: an approach using robust linear matrix inequalities," in Proc. IEEE CDC 2009, pp. 8142-8147, 2009.
S. Mariéthoz, S. Almér, M. Bâja, A. G. Beccuti, D. Patino, A. Wernrud, J. Buisson, H. Cormerais, H. Fujioka, U. T. Jönsson, C.-Y. Kao, M. Morari, G. Papafotiou, A. Rantzer, P. Riedinger, "Comparative assessment of alternative control techniques for buck and boost DC-DC converters," to appear in IEEE Transactions on Control Systems Technology, 2009.
H. Fujioka, "Discussion on: 'Transfer matrices and statistical analysis of sampled-data systems with continuous periodic processes,'" European Journal of Control, vol. 15, pp. 645-647, 2009.

2008

Y. Kobayashi and H. Fujioka, "Active noise cancellation for ventilation ducts using a pair of loudspeakers by sampled-data H_&infin optimization," Advances in Acoustics and Vibration, vol.2008, 2008.
H. Fujioka, "Stability analysis for a class of networked/embedded control systems: A discrete-time approach," in Proc. 2008 American Control Conference, pp. 4997-5002, 2008.
H. Fujioka, "Stability analysis for a class of networked/embedded control systems: Output feedback case," in Proc. 17th IFAC World Congress, pp. 4210-4215, 2008.
H. Fujioka and T. Nakai, "Stabilizing systems with aperiodic sample-and-hold devices," in Proc. UKACC, 2008.

2007

C.-Y. Kao, U. T. Jönsson, and H. Fujioka, "Characterization of robust stability of a class of interconnected systems," in Proc. 2007 Amer. Contr. Conf., pp. 784-789, 2007.
S. Almér, H. Fujioka, U. T. Jönsson, C.-Y. Kao, D. Patino, P. Riedinger, T. Geyer, A. G. Beccuti, G. Papafotiou, M. Morari, A. Wernrud, and A. Rantzer, "Hybrid control techniques applied to the synchronous step-down DC-DC converter," in Proc. 2007 Amer. Contr. Conf., pp. 5450-5457, 2007.
A. G. Beccuti, G. Papafotiou, M. Morari, S. Almér, H. Fujioka, U. T. Jönsson, C.-Y. Kao, A. Wernrud, A. Rantzer, M. Bâja, H. Cormerais, J. Buisson, "Hybrid control techniques applied to step-up DC-DC converter," in Proc. 2007 Amer. Contr. Conf., pp. 5464-5471, 2007.
U. T. Jönsson, C.-Y. Kao, and H. Fujioka, "Low dimensional stability criteria for large-scale interconnected systems," in Proc. European Contr. Conf., 2007.
seminar @ Department of Electrical and Electronic Engineering, University of Melbourne (17-May-2007)
U. T. Jönsson, C.-Y. Kao, and H. Fujioka, "A Popov criterion for networked systems,'' Systems & Control Letters, vol. 56, pp. 603-610, 2007.
Y. Kobayashi and H. Fujioka, "Robust control design for active noise control systems of ducts with a ventilation system using a pair of loudspeakers,'' in Proc. International Congress on Sound and Vibration, 2007.
H. Fujioka, "Computing L₂-gain of finite-horizon systems with boundary conditions," IEEE Trans. Autom. Contr., vol. 52, pp. 697-702, 2007.
H. Fujioka, C.-Y. Kao, S. Almér, and U. Jönsson, "LQ optimal control synthesis for a class of pulse modulated systems," Automatica, vol. 43, pp. 1009-1020, 2007.
H. Fujioka, "Stability analysis of systems with aperiodic sample-and-hold devices," in Proc. of IFAC Workshop on Time Delay Systems, 2007.
seminar @ Avdelningen Optimeringslära och Systemteori, Kungliga Tekniska Högskolan (21-Sep-2007)
H. Fujioka, "Computing frequency response gain for a class of controlled spatio-temporal systems," in Proc. 46th IEEE Conf. Decision and Control, pp. 4161-4166, 2007.
seminar @ Center for Control, Dynamical Systems and Computation, University of California, Santa Barbara (17-Dec-2007)

2006

H. Fujioka, "Step disturbance rejection via sampled-data H_&infin control: Necessity of internal model," in Proc. MTNS 2006, pp. 1774-1779, 2006.
U. T. Jönsson, C.-Y. Kao, and H. Fujioka, "A Popov criterion for networked systems,'' in Proc. MTNS 2006, pp. 2116-2124, 2006.
seminar @ Avdelningen Optimeringslära och Systemteori, Kungliga Tekniska Högskolan (26-Sep-2006)
H. Fujioka, "IQC analysis for sampled-data systems: A cutting plane algorithm and its implementation," in Proc. 2006 IEEE CCA, CACSD, IC, pp. 1940-1945, 2006.
H. Fujioka, S. Almér, U. Jönsson, and C.-Y. Kao, "Control synthesis for a class of PWM systems for robust tracking and H_&infin performance," in Proc. 45th IEEE Conf. Decision and Control, pp. 4861-4866, 2006.
H. Fujioka and S. Hara, "Output regulation for sampled-data feedback systems: Internal model principle and H_&infin servo controller synthesis," in Proc. 45th IEEE Conf. Decision and Control, pp. 4867-4872, 2006.
seminar @ Department of Electrical and Computer Engineering, University of Minnesota (11-Dec-2006)

2005

H. Fujioka, ``Quadratic performance analysis for finite-horizon systems,'' in preprints of 16th IFAC World Congress, 2005.
H. Fujioka, C.-Y. Kao, S. Almér, and U. T. Jönsson, ``LQ optimal control synthesis for a class of pulse modulated systems,'' in preprints of 16th IFAC World Congress, 2005.
seminar @ Avdelningen Optimeringslära och Systemteori, Kungliga Tekniska Högskolan (15-Jul-2005)
H. Fujioka, C.-Y. Kao, S. Almér, and U. T. Jönsson, ``Sampled-data H_&infin control design for a class of PWM systems,'' in Proc. of IEEE Conf. Decision and Control and European Control Conference, pp. 4499-4504, 2005.
seminar @ Institut für Regelungstechnik, Technische Universität Hamburg-Harburg (09-Dec-2005).