Sparse Control Theory for Green Technology

2016 Fiscal Year Annual Research Report

• Project/Area Number: 15H02668
• Research Institution: The University of Kitakyushu
• Principal Investigator: 永原 正章 北九州市立大学, 環境技術研究所, 教授 (90362582)
• Project Period (FY): 2015-04-01 – 2019-03-31
• Keywords: スパースモデリング / 最適制御 / マルチエージェントシステム / 分散最適化 / 分散制御 / 省エネルギー / IoT / Cyber-Physical Systems

Outline of Annual Research Achievements

省エネルギーのためのスパース最適制御理論の構築に関する研究について，本年度は特にインド工科大学ムンバイ校，ドイツ・パダボーン大学およびテキサス工科大学ダラス校との国際共同研究，また京都大学，広島大学，東京工業大学との国内共同研究が大きく推進した．これらの成果を含む研究成果は，当該分野を代表する国際学術雑誌 (IEEE Transactions on Automatic Control, IEEE Signal Processing Letters, Systems and Control Letters および EURASIP Journal on Advances in Signal Processing) および国際会議 (IEEE CDC, IEEE ICASSP, MTNS, ACC, etc) 等で発表された．
スパース最適制御理論は線形系においては，本年度はその応用に特に力を入れた．特に，IoT (Internet of Things) や Cyber-Physical Systems (CPS) など，近年大きく注目されているシステムに対する基礎理論であるマルチエージェントシステムへのスパース最適制御理論の拡張に成功した．省エネルギーを考慮した分散最適化，および分散制御系の設計理論という新しい枠組みでの研究課題を発見し，現在もその理論的な枠組みの構築を推進中である．
制御信号のスパース性と制御信号の滑らかさは一般には相反する性質となり，それらを制御するためにはスパース性を導くL1ノルム項と滑らかさを導くL2ノルム項との和を正則化項に持つスパース最適制御の計算が必要となる．この計算に，近年注目されている CLOT (Combined L-One and Two) ノルムの概念を導入し，スパースかつ滑らかな制御の設計理論をテキサス工科大学ダラス校のVidyasagar教授との共同研究で得た．この成果は2017年度の国際会議IFAC World Congressで発表予定である．

Current Status of Research Progress

1: Research has progressed more than it was originally planned.

Reason

当初計画していたネットワーク化制御系への拡張を超えて，マルチエージェントシステムへのスパース最適制御理論の拡張に成功し，省エネルギーを考慮した分散最適化，および分散制御系の設計理論という新しい枠組みでの研究課題を発見した．また，制御信号のスパース性と制御信号の滑らかさを同時に考慮する新しい手法である CLOT (Combined L-One and Two) ノルムを導入した新しい設計法ををテキサス工科大学ダラス校のVidyasagar教授との共同研究で得た．これらの成果は，当初の計画にはなかった新しい成果であり，計画以上に研究が進展していると言える．

Strategy for Future Research Activity

マルチエージェントシステムへのスパース最適制御理論の拡張をさらに進めるとともに，CLOTノルムを用いた設計理論の構築も推進する．また，理論の応用として，ドローン等の実機を用いた実証を行い，社会実装を目指した研究にも着手する．これらの研究をさらに加速するために国際および国内の共同研究を大幅に拡大する予定である．

Research Products

• [Int'l Joint Research] Indian Institute of Technology Bombay(India)
  • Country Name: India
  • Counterpart Institution: Indian Institute of Technology Bombay
• [Int'l Joint Research] Paderborn University(Germany)
  • Country Name: Germany
  • Counterpart Institution: Paderborn University
• [Int'l Joint Research] Aalborg University(Denmark)
  • Country Name: Denmark
  • Counterpart Institution: Aalborg University
• [Int'l Joint Research] Texas University at Dallas(米国)
  • Country Name: U.S.A.
  • Counterpart Institution: Texas University at Dallas
• [Int'l Joint Research] Lund University(Sweden)
  • Country Name: Sweden
  • Counterpart Institution: Lund University
• [Journal Article] Discrete-Valued Control of Linear Time-Invariant Systems by Sum-of-Absolute-Values Optimization (2017)
  • Author(s): Ikeda Takuya、Nagahara Masaaki、Ono Shunsuke
  • Journal Title: IEEE Transactions on Automatic Control Volume: 62 Pages: 2750～2763
  • DOI: 10.1109/TAC.2016.2627683
  • Peer Reviewed / Open Access
• [Journal Article] Robust AC Voltage Regulation of Microgrids in Islanded Mode with Sinusoidal Internal Model (2017)
  • Author(s): N. Hayashi, M. Nagahara, and Y. Yamamoto
  • Journal Title: SICE Journal of Control, Measurement, and System Integration Volume: 10(2) Pages: 62-69
  • DOI: 10.9746/jcmsi.10.62
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Symbol Detection for Faster-Than-Nyquist Signaling by Sum-of-Absolute-Values Optimization (2016)
  • Author(s): H. Sasahara, K. Hayashi and M. Nagahara
  • Journal Title: IEEE Signal Processing Letters Volume: 23(12) Pages: 1853-1857
  • DOI: 10.1109/LSP.2016.2625839
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Discrete-time hands-off control by sparse optimization (2016)
  • Author(s): M. Nagahara, J. Ostergaard, D. E. Quevedo
  • Journal Title: EURASIP Journal on Advances in Signal Processing Volume: 76 Pages: -
  • DOI: 10.1186/s13634-016-0372-9
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Characterization of maximum hands-off control (2016)
  • Author(s): D. Chatterjee, M. Nagahara, D. E. Quevedo, and K. S. M. Rao
  • Journal Title: Characterization of maximum hands-off control Volume: 94 Pages: 31-36
  • DOI: 10.1016/j.sysconle.2016.05.002
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Presentation] Continuous Hands-off Control by CLOT Norm Minimization (2017)
  • Author(s): Niharika Challapalli, Masaaki Nagahara, and Mathukumalli Vidyasagar
  • Organizer: IFAC World Congress 2017
  • Place of Presentation: Toulouse, France
  • Year and Date: 2017-07-09 – 2017-07-14
  • Int'l Joint Research
• [Presentation] スパースモデリング (2017)
  • Author(s): 永原正章
  • Organizer: SICE第４回制御部門マルチシンポジウム
  • Place of Presentation: 岡山大学（岡山県岡山市）
  • Year and Date: 2017-03-06 – 2017-03-06
  • Invited
• [Presentation] Symbol Detection for Faster-than-Nyquist Signaling by Sum-of-Absolute-Values Optimization (2017)
  • Author(s): Hampei Sasahara, Kazunori Hayashi, Masaaki Nagahara
  • Organizer: The 42nd IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2017)
  • Place of Presentation: New Orleans, USA
  • Year and Date: 2017-03-05 – 2017-03-09
  • Int'l Joint Research
• [Presentation] RATE-DISTORTION ANALYSIS OF DELTA-SIGMA MODULATORS (2017)
  • Author(s): Shuichi Ohno, Teruyuki Shiraki, M.Rizwan Tariq, Masaaki Nagahara
  • Organizer: The 42nd IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2017)
  • Place of Presentation: New Orleans, USA
  • Year and Date: 2017-03-05 – 2017-03-09
  • Int'l Joint Research
• [Presentation] 動的スパースモデリングによる省エネルギー制御 (2017)
  • Author(s): 永原正章
  • Organizer: 日本鉄鋼協会制御フォーラム公開フォーラム
  • Place of Presentation: 新日鐵住金尼崎研究開発センター（兵庫県尼崎市）
  • Year and Date: 2017-01-23 – 2017-01-23
  • Invited
• [Presentation] Hypertracking Beyond the Nyquist Frequency (2017)
  • Author(s): Kaoru Yamamoto, Yutaka Yamamoto, and Masaaki Nagahara
  • Organizer: Emerging Applications of Control and System Theory (EACST 2017)
  • Int'l Joint Research
• [Presentation] Synthesis of IIR error feedback filters for ΔΣ modulators using approximation (2016)
  • Author(s): M. R. Tariq, S. Ohno and M. Nagahara
  • Organizer: Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA)
  • Place of Presentation: Jeju, Korea
  • Year and Date: 2016-12-13 – 2016-12-16
  • Int'l Joint Research
• [Presentation] Tracking of signals beyond the Nyquist frequency (2016)
  • Author(s): Y. Yamamoto, K. Yamamoto and M. Nagahara
  • Organizer: 2016 IEEE 55th Conference on Decision and Control (CDC)
  • Place of Presentation: Las Vegas, NV, USA
  • Year and Date: 2016-12-12 – 2016-12-14
  • Int'l Joint Research
• [Presentation] Consensus by maximum hands-off distributed control with sampled-data state observation (2016)
  • Author(s): T. Ikeda, M. Nagahara and K. Kashima
  • Organizer: 2016 IEEE 55th Conference on Decision and Control (CDC)
  • Place of Presentation: Las Vegas, NV, USA
  • Year and Date: 2016-12-12 – 2016-12-14
  • Int'l Joint Research
• [Presentation] マルチエージェントシステムの制御 (2016)
  • Author(s): 永原正章
  • Organizer: トヨタ東富士研究所「制御」先端・先進研究交流会
  • Place of Presentation: トヨタ東富士研究所（静岡県裾野市）
  • Year and Date: 2016-11-25 – 2016-11-25
  • Invited
• [Presentation] スパースモデリング (2016)
  • Author(s): 永原正章
  • Organizer: 電子情報通信学会「IoT時代の制御通信塾ー物理と情報をつなぐ新技術」
  • Place of Presentation: メルパルク京都（京都府京都市）
  • Year and Date: 2016-11-21 – 2016-11-21
  • Invited
• [Presentation] Sparsity, discreteness, and optimal control (2016)
  • Author(s): 永原正章
  • Organizer: The 48th ISCIE International Symposium on Stochastic Systems Theory and Its Applications (SSS)
  • Place of Presentation: 福岡工業大学（福岡県福岡市）
  • Year and Date: 2016-11-04 – 2016-11-04
  • Int'l Joint Research / Invited
• [Presentation] Massive Overloaded MIMO Signal Detection via Convex Optimization with Proximal Splitting (2016)
  • Author(s): R. Hayakawa, K. Hayashi, H. Sasahara, and M. Nagahara
  • Organizer: The 2016 European Signal Processing Conference (EUSIPCO)
  • Place of Presentation: Budapest, Hunbary
  • Year and Date: 2016-08-29 – 2016-09-02
  • Int'l Joint Research
• [Presentation] マルチエージェントの制御：ドローン応用からIoTまで (2016)
  • Author(s): 永原正章
  • Organizer: 大阪大学 数理・データ科学セミナー 数理モデルセミナーシリーズ 第10回
  • Place of Presentation: 大阪大学（大阪府豊中市）
  • Year and Date: 2016-08-29 – 2016-08-29
  • Invited
• [Presentation] Quantized self-triggered control by sum-of-absolute-values optimization (2016)
  • Author(s): T. Ikeda, M. Nagahara and D. E. Quevedo
  • Organizer: 22nd International Symposium on Mathematical Theory of Networks and Systems (MTNS)
  • Place of Presentation: the University of Minnesota, Minneapolis, USA
  • Year and Date: 2016-07-12 – 2016-07-15
  • Int'l Joint Research
• [Presentation] Control Theoretical Approach for Single-Frequency Full-Duplex Wireless Relaying (2016)
  • Author(s): H. Sasahara, K. Hayashi, M. Nagahara, and Y. Yamamoto
  • Organizer: 2nd International Symposium on Mathematical Theory of Networks and Systems (MTNS)
  • Place of Presentation: the University of Minnesota, Minneapolis, USA
  • Year and Date: 2016-07-12 – 2016-07-15
  • Int'l Joint Research
• [Presentation] Fundamental analysis of sparse optimal control and its application to discrete-valued control (2016)
  • Author(s): T. Ikeda and M. Nagahara
  • Organizer: 2016 American Control Conference (ACC)
  • Place of Presentation: Boston, USA
  • Year and Date: 2016-07-06 – 2016-07-08
  • Int'l Joint Research
• [Presentation] Maximum hands-off control without normality assumption (2016)
  • Author(s): T. Ikeda and M. Nagahara
  • Organizer: 2016 American Control Conference (ACC)
  • Place of Presentation: Boston, USA
  • Year and Date: 2016-07-06 – 2016-07-08
• [Presentation] 動的スパースモデリングとL1最適制御 (2016)
  • Author(s): 永原正章
  • Organizer: RACOT研究会
  • Place of Presentation: アクロス福岡（福岡県福岡市）
  • Year and Date: 2016-06-25 – 2016-06-25
  • Invited
• [Presentation] マルチエージェントシステムの制御：合意制御と分散最適化 (2016)
  • Author(s): 永原正章
  • Organizer: 第60回システム制御情報学会研究発表講演会(SCI'16)
  • Place of Presentation: 京都テルサ（京都府京都市）
  • Year and Date: 2016-05-26 – 2016-05-26
  • Invited
• [Presentation] Mutiuser Detection by MAP Estimation with Sum-of-Absolute-Values Relaxation (2016)
  • Author(s): H. Sasahara, K. Hayashi, and M. Nagahara
  • Organizer: IEEE International Conference on Communiations (ICC) 2016
  • Place of Presentation: Kuala Lumpur, Malaysia
  • Year and Date: 2016-05-23 – 2016-05-27
  • Int'l Joint Research
• [Book] 倒立振子で学ぶ制御工学 (2017)
  • Author(s): 川田昌克，東俊一，市原裕之，浦久保孝光，大塚敏之，甲斐健也，國松禎明，澤田賢治，永原正章，南裕樹
  • Total Pages: 226 (60-75, 119-132, 169-196)
  • Publisher: 森北出版
• [Remarks] 永原正章のホームページ
  • URL: https://nagahara-masaaki.github.io/