Journal Papers

  1. M.A.S. Kamal, C.P. Tan, T. Hayakawa, S. Azuma, and J. Imura:
    Control of Vehicular Traffic at an Intersection Using a Cyber-Physical Multi-Agent Framework,
    IEEE Transactions on Industrial Informatics, to appear (2021)
  2. S. Azuma and M. Nagahara:
    Majority Determination in Binary-valued Communication Networks,
    IEEE Transactions on Control of Network Systems, to appear (2021)
    Open Access
  3. K. Sato and S. Azuma:
    Analysis and Design of Aggregate Demand Response Systems Based on Controllability,
    IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol. XXX-A, No. X, pp. XXX--XXX (2021)
  4. S. Azuma, T. Kure, and T. Sugie:
    Structural Bistability Analysis of Flower-shaped and Chain-shaped Boolean Networks,
    IEEE/ACM Transactions on Computational Biology and Bioinformatics, Vol. 17, No. 6, pp. 2098--2106 (2020)
    Open Access
  5. F. Xu, R. Ariizumi, S. Azuma, and T. Asai :
    Tamper-Resistant Controller Using Neural Network and Time-Varying Quantization,
    Artificial Life and Robotics, Vol. 25, No. 4, pp. 596--602 (2020)
  6. S. Izumi, S. Azuma, and T. Sugie:
    Multi-Robot Control Inspired by Bacterial Chemotaxis: Coverage and Rendezvous via Networking of Chemotaxis Controllers,
    IEEE Access, Vol. 8, pp. 124172--124184 (2020)
  7. S. Azuma:
    Robust Network Structures for Conserving Total Activity in Boolean Networks,
    Control Theory and Technology, Vol. 18, No. 2, pp. 143--147 (2020)
  8. S. Izumi and S. Azuma:
    Chemotaxis-inspired Control for Multi-agent Coordination: Formation Control by Two Types of Chemotaxis Controllers,
    New Generation Computing, Vol. 38, No. 2, pp. 303--324 (2020)
  9. S. Izumi, S. Azuma, and T. Sugie:
    Analysis and Design of Multi-Agent Systems in Spatial Frequency Domain: Application to Distributed Spatial Filtering in Sensor Networks,
    IEEE Access, Vol. 8, pp. 34909--34918 (2020)
    Open Access
  10. Y. Ito, M.A.S. Kamal, T. Yoshimura, and S. Azuma:
    Pseudo-perturbation-based Broadcast Control of Multi-agent Systems,
    Automatica, Vol. 113, 108769 (2020)
  11. S. Azuma, D. Sato, K. Kobayashi, and N. Yamaguchi:
    Detection of Defaulting Participants of Demand Response Based on Sparse Reconstruction,
    IEEE Transactions on Smart Grid, Vol. 11, No. 1, pp. 368--378 (2020)
    Open Access
  12. Y. Ito, M.A.S Kamal, T. Yoshimura, and S. Azuma:
    Coordination of Connected Vehicles on Merging Roads Using Pseudo-perturbation-based Broadcast Control,
    IEEE Transactions on Intelligent Transportation Systems, Vol. 20, No. 9, pp. 3496--3512 (2019)
  13. D.H. Nguyen, and S. Azuma, and T. Sugie:
    Novel Control Approaches for Demand Response with Real-time Pricing using Parallel and Distributed Consensus-based ADMM,
    IEEE Transactions on Industrial Electronics, Vol. 66, No. 10, pp. 7935--7945 (2019)
  14. K. Miyazaki, K. Kobayashi, S. Azuma, N. Yamaguchi, and Y. Yamashita:
    Design and Value Evaluation of Demand Response Based on Model Predictive Control,
    IEEE Transactions on Industrial Informatics, Vol. 15, No. 8, pp. 4809--4818 (2019)
  15. K. Sakurama, S. Azuma, and T. Sugie:
    Multi-agent Coordination via Distributed Pattern Matching,
    IEEE Transactions on Automatic Control, Vol. 64, No. 8, pp. 3210--3225 (2019)
  16. S. Azuma, T.Kure, T. Yoshida, and T. Sugie:
    Cactus-expandable Graphs,
    IEEE Transactions on Control of Network Systems, Vol. 6, No. 2, pp. 775--788 (2019)
    Open Access
  17. S. Azuma, T. Yoshida, and T. Sugie:
    Structural Oscillatority Analysis of Boolean Networks,
    IEEE Transactions on Control of Network Systems, Vol. 6, No. 2, pp. 464--473 (2019)
    Open Access
  18. M. Tanemura and S. Azuma:
    Efficient Data-Driven Estimation of Passivity Properties,
    IEEE Control Systems Letters, Vol. 3, No. 2, pp. 398--403 (2019)
  19. K. Sato and S. Azuma:
    Secure Real-time Control Through Fog Computation,
    IEEE Transactions on Industrial Informatics, Vol. 15, No. 2, pp. 1017--1026 (2019)
  20. R. Morita, S. Azuma, and T. Sugie:
    Optimal Random Dither Quantizers for Positive Systems,
    Asian Journal of Control, Vol. 20, No. 6, pp. 2314--2317 (2018)
  21. S. Izumi and S. Azuma:
    Real-Time Pricing by Data Fusion on Networks,
    IEEE Transactions on Industrial Informatics, Vol. 14, No. 3, pp. 1175--1185 (2018)
    Open Access
  22. K. Sakurama, S. Azuma, and T. Sugie:
    Multi-agent Coordination to High-dimensional Target Subspaces,
    IEEE Transactions on Control of Network Systems, Vol. 5CNo. 1Cpp. 345--358i2018)
  23. R. Takahashi, S. Azuma, M. Hasegawa, H. Ando, and T. Hikihara:
    Power Processing for Advanced Power Distribution and Control,
    IEICE Transactions on Communications, Vol. E100-B, No. 6, pp. 941--947 (2017)
  24. Z. Sun, B.D.O. Anderson, T. Sugie, S. Azuma, and K. Sakurama:
    Formation Shape Control with Distance and Area Constraints,
    IFAC Journal of Systems and Control, Vol. 1, pp. 2-12 (2017)
  25. S. Azuma, T. Yoshida, and T. Sugie:
    Structural Monostability of Activation-Inhibition Boolean Networks,
    IEEE Transactions on Control of Network Systems, Vol. 4, No. 2, pp. 179--190 (2017)
    Open Access
  26. 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, Vol. E100-A, No. 2, pp. 376--384 (2017)
  27. R. Takahashi, S. Azuma, and T. Hikihara:
    Power Regulation with Predictive Dynamic Quantizer in Power Packet Dispatching System,
    IEEE Transactions on Industrial Electronics, Vol. 63, No. 12, pp. 7653--7661 (2016)
  28. 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 (2016)
    Open Access
  29. S. Izumi, S. Azuma, and T. Sugie:
    Stabilization by Controller Networks,
    Systems & Control Letters, Vol. 94, pp. 77--83 (2016)
    Open Access
  30. 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)
  31. 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)
  32. 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)
    Download from Repository
  33. 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)
    Download from Repository
  34. K. Sato and S. Azuma:
    Controllability Analysis of An Aggregate Demend Response System,
    Mathematical Problems in Engineering, Article ID 487173 (2015)
  35. 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)
  36. 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)
  37. 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)
  38. 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)
  39. 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)
  40. 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)
  41. 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)
  42. 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)
  43. 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)
    Download from Repository
  44. 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)
    Download from Repository
  45. 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)
    Download from Repository
  46. 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)
  47. S. Azuma, R. Yoshimura, and T. Sugie:
    Broadcast Control of Multi-Agent Systems,
    Automatica, Vol. 49, No. 8, pp. 2307--2316 (2013)
  48. 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)
  49. 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)
  50. 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)
  51. 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)
  52. 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)
    Download from Repository
  53. 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)
  54. S. Azuma and T. Sugie:
    Dynamic Quantization of Nonlinear Control Systems,
    IEEE Transactions on Automatic Control, Vol. 57, No. 4, pp. 875--888 (2012)
    Download from Repository
  55. 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, pp. 208--213 (2012)
  56. 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, pp. 372--379 (2011)
  57. 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)
  58. 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)
  59. 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)
  60. 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)
  61. 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)
    Download from Repository
  62. 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)
  63. 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)
  64. S. Azuma and T. Sugie:
    Optimal Dynamic Quantizers for Discrete-Valued Input Control,
    Automatica, Vol. 44, No. 2, pp. 396--406 (2008)
  65. 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)
  66. 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)
  67. 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)
    Download from Repository
  68. 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)
  69. 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)
  70. 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)