Journal Papers

  1. K. Sakurama, S. Azuma, and T. Sugie:
    Multi-agent Coordination to High-dimensional Target Subspaces,
    IEEE Transactions on Control of Network Systems, Vol. XX, No. XX, to appear (201X)
  2. R. Takahashi, S. Azuma, and T. Hikihara:
    Power Regulation with Predictive Dynamic Quantizer in Power Packet Dispatching System,
    IEEE Transactions on Industrial Electronics, Vol. XX, No. XX, to appear (201X)
  3. S. Azuma, T. Yoshida, and T. Sugie:
    Structural Monostability of Activation-Inhibition Boolean Networks,
    IEEE Transactions on Control of Network Systems, Vol. XX, No. XX, to appear (201X)
  4. K. Sato and S. Azuma:
    Controllability Analysis of Aggregate Demand Response System in Multiple Price-Change Situation,
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, to appear (201X)
  5. S. Azuma, K. Owaki, N. Shinohara, and T. Sugie:
    Performance Analysis of Chemotaxis Controllers: Which has better chemotaxis controller, Escherichia coli or Paramecium caudatum?,
    IEEE/ACM Transactions on Computational Biology and Bioinformatics, Vol. 13, No. 4, pp. 730--741 (201X)
  6. S. Izumi, S. Azuma, and T. Sugie:
    Stabilization by Controller Networks,
    Systems & Control Letters, Vol. 94, pp. 77--83 (2016)
  7. S. Azuma, I. Baba, and T. Sugie:
    Broadcast Control of Markovian Multi-agent Systems,
    SICE Journal of Control, Measurement, and System Integration, Vol. 9, No. 2, pp. 103--112 (2016)
  8. S. Azuma, T. Yoshida, and T. Sugie:
    Designability of Multi-attractor Boolean Networks with a Fixed Network Structure,
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E99-A, No. 1, pp. 423--425 (2016)
  9. M.A. Ahmad, S. Azuma, and T. Sugie:
    Identification of Continuous-time Hammerstein Systems by Simultaneous Perturbation Stochastic Approximation,
    Expert Systems with Applications, Vol. 43, No. 51--58 (2016)
  10. Y. Tanaka, S. Azuma, and T. Sugie:
    Simultaneous Perturbation Stochastic Approximation with Norm-Limited Update Vector,
    Asian Journal of Control, Vol. 17, No. 6, pp. 2083--2090 (2015)
  11. K. Sato and S. Azuma:
    Controllability Analysis of An Aggregate Demend Response System,
    Mathematical Problems in Engineering, Article ID 487173 (2015)
  12. Y. Minami and S. Azuma:
    Performance Analysis of Demand Data Modification Mechanism for Power Balancing Control,
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E98-A, No. 7, pp. 1562--1564 (2015)
  13. K. Sakurama, S. Azuma, and T. Sugie:
    Distributed Controllers for Multi-Agent Coordination via Gradient-Flow Approach,
    IEEE Transactions on Automatic Control, Vol. 60, No. 6, pp. 1471--1485 (2015)
  14. S. Izumi, S. Azuma, and T. Sugie:
    Distributed Hybrid Controllers for Multi-Agent Mass Games by A Variable Number of Player Agents,
    Asian Journal of Control, Vol. 17, No. 3, pp. 762--774 (2015)
  15. M.A. Ahmad, S. Azuma, I. Baba, and T. Sugie:
    Switching Controller Design for Hybrid Electric Vehicles,
    SICE Journal of Control, Measurement, and System Integration, Vol. 7, No. 5, pp. 273--282 (2014)
  16. M.A. Ahmad, S. Azuma, and T. Sugie:
    A Model-Free Approach for Maximizing Power Production of Wind Farm Using Multi-Resolution Simultaneous Perturbation Stochastic Approximation,
    Energies, Vol. 7, No. 9, pp. 5624--5646 (2014)
  17. K. Kobayashi, I. Maruta, K. Sakurama, and S. Azuma:
    Modeling and Design of Real-Time Pricing Systems Based on Markov Decision Processes,
    Applied Mathematics, Vol. 5, No. 10, pp. 1485--1495 (2014)
  18. Y. Hirata, S. Azuma, and K. Aihara:
    Model Predictive Control for Optimally Scheduling Intermittent Androgen Suppression of Prostate Cancer,
    Methods, Vol. 67, No. 3, pp. 278--281 (2014)
  19. M.A. Ahmad, S. Azuma, and T. Sugie:
    Performance Analysis of Model-Free PID Tuning of MIMO Systems Based on Simultaneous Perturbation Stochastic Approximation,
    Expert Systems with Applications, Vol. 41, No. 14, pp. 6361--6370 (2014)
  20. S. Azuma, Y. Tanaka, and T. Sugie:
    Multi-Agent Consensus under Communication-Broadcast Mixed Environment,
    International Journal of Control, Vol. 87, No. 6, pp. 1103--1116 (2014)
  21. Y. Tanaka, S. Azuma, and T. Sugie:
    Broadcast Control of Multi-Agent Systems with Quantized Measurements,
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E97-A, No. 3, pp. 830--839 (2014)
  22. S. Azuma and G.J. Pappas:
    Discrete Abstraction of Stochastic Nonlinear Systems,
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E97-A, No. 2, pp. 452--458 (2014)
  23. S. Azuma and T. Sugie:
    Dynamic Quantization of Nonaffine Nonlinear Systems,
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. E96-A, No. 10, pp. 1993--1998 (2013)
  24. S. Azuma, R. Yoshimura, and T. Sugie:
    Broadcast Control of Multi-Agent Systems,
    Automatica, Vol. 49, No. 8, pp. 2307--2316 (2013)
  25. R. Morita, S. Azuma, and T. Sugie:
    Performance Analysis of Random Dither Quantizers in Feedback Control Systems,
    SICE Journal of Control, Measurement, and System Integration, Vol. 6, No. 1, pp. 21--27 (2013)
  26. Y. Minami, S. Azuma, and T. Sugie:
    Halftone Control of Distributed Generation Networks,
    SICE Journal of Control, Measurement, and System Integration, Vol. 6, No. 1, pp. 14--20 (2013)
  27. M.A. Ahmad, S. Azuma, and T. Sugie:
    Distributed Function Calculation in Switching Topology Networks,
    SICE Journal of Control, Measurement, and System Integration, Vol. 5, No. 6, pp. 342--348 (2012)
  28. J. Park, S. Azuma, and T. Sugie:
    Fault-Tolerant Control for LPV Systems Based on Fault Compensator,
    SICE Journal of Control, Measurement, and System Integration, Vol. 5, No. 5, pp. 311--318 (2012)
  29. S. Azuma, M. Selman Sakar, and G.J. Pappas:
    Stochastic Source Seeking by Mobile Robots,
    IEEE Transactions on Automatic Control, Vol. 57, No. 9, pp. 2308--2321 (2012)
  30. Y. Minami, S. Azuma, and T. Sugie:
    Optimal Decentralized Sigma-Delta Modulators for Quantized Feedback Control,
    Nonlinear Theory and Its Applications, IEICE, Vol. 3, No. 3, pp. 386--404 (2012)
  31. S. Azuma and T. Sugie:
    Dynamic Quantization of Nonlinear Control Systems,
    IEEE Transactions on Automatic Control, Vol. 57, No. 4, pp. 875--888 (2012)
  32. Y. Minami, S. Azuma, and T. Sugie:
    Inverse Halftoning Using Super-Resolution Image Processing,
    IEEJ Transactions on Electrical and Electronic Engineering, Vol. 7, No. 2, to appear (2012)
  33. R. Morita, S. Azuma, Y. Minami, and T. Sugie:
    Graphical Design Software for Dynamic Quantizers in Control Systems,
    SICE Journal of Control, Measurement, and System Integration, Vol. 4, No. 5, to appear (2011)
  34. S. Azuma, Y. Minami, and T. Sugie:
    Optimal Dynamic Quantizers for Feedback Control with Discrete-Level Actuators: Unified Solution and Experimental Evaluation,
    Transactions of the ASME, Journal of Dynamic Systems, Measurement and Control, Vol. 133, No. 2, Art. 021005 (10 pages) (2011)
  35. S. Azuma:
    Discussion on Stability Analysis of Finite-Level Quantized Discrete-Time Linear Control Systems,
    European Journal of Control, Vol. 16, No. 3, pp. 272--274 (2010)
  36. S. Azuma and T. Sugie:
    Stability Analysis of Optimally Quantized LFT-Feedback Systems,
    International Journal of Control, Vol. 83, No. 6, pp. 1125--1135 (2010)
  37. Y. Minami, S. Azuma, and T. Sugie:
    Optimal Feedback Quantizers for n-Dimensional Systems with Discrete-Valued Input,
    Nonlinear Analysis: Hybrid Systems, Vol. 4, No. 2, pp. 345--356 (2010)
  38. S. Azuma, J. Imura, and T. Sugie:
    Lebesgue Piecewise Affine Approximation of Nonlinear Systems,
    Nonlinear Analysis: Hybrid Systems, Vol. 4, No. 1, pp. 92--102 (2010)
  39. Y. Minami, S. Azuma, and T. Sugie:
    Multirate-Sampling Dynamic Quantizers for Non-Minimum Phase Linear Control Systems,
    SICE Journal of Control, Measurement, and System Integration, Vol. 2, No. 4, pp. 229--235 (2009)
  40. S. Azuma and T. Sugie:
    Synthesis of Optimal Dynamic Quantizers for Discrete-Valued Input Control,
    IEEE Transactions on Automatic Control, Vol. 53, No. 9, pp. 2064--2075 (2008)
  41. S. Azuma and T. Sugie:
    Optimal Dynamic Quantizers for Discrete-Valued Input Control,
    Automatica, Vol. 44, No. 2, pp. 396--406 (2008)
  42. S. Azuma, E. Yanagisawa, and J. Imura:
    Controllability Analysis of Biosystems Based on Piecewise Affine Systems Approach,
    IEEE Transactions on Automatic Control & IEEE Transactions on Circuits and Systems I: Regular Papers, Joint Special Issue on Systems Biology, January, pp. 139-152 (2008)
  43. S. Azuma and J. Imura:
    Polynomial-Time Probabilistic Observability Analysis of Sampled-Data Piecewise Affine Systems,
    Systems & Control Letters, Vol. 56, No. 11-12, pp. 685--694 (2007)
  44. S. Azuma and J. Imura:
    Polynomial-Time Probabilistic Controllability Analysis of Discrete-Time Piecewise Affine Systems,
    IEEE Transactions on Automatic Control, Vol. 52, No. 11, pp. 2029--2046 (2007)
  45. M. Egerstedt, S. Azuma, and Y. Wardi:
    Optimal Timing Control of Switched Linear Systems Based on Partial Information,
    Nonlinear Analysis: Theory, Methods & Applications, Vol. 65, No. 9, pp. 1736--1750 (2006)
  46. S. Azuma and J. Imura:
    Synthesis of Optimal Controllers for Piecewise Affine Systems with Sampled-Data Switching,
    Automatica, Vol. 42, No. 5, pp. 697--710 (2006)
  47. M. Ji, S. Azuma, and M. Egerstedt:
    Role Assignment in Multi-Agent Coordination,
    International Journal of Assistive Robotics and Mechatronics, Vol. 7, No. 1, pp. 32--40 (2006)