○International Award

Dr. Yoshio EBIHARA (Member)
He received the B.E., M.E. and D.E. degrees in electrical engineering from Kyoto University, Kyoto, Japan, in 1997, 1999 and 2002, respectively. Since 2002, he has been with the Department of Electrical Engineering, Kyoto University, where he is an Associate Professor since 2010. In 2010, he held a visiting researcher position at LAAS-CNRS Toulouse, France. His research interests include convex optimization in control and positive system analysis and synthesis. Currently, he is an Associate Editor of IEEE Transactions on Control Systems Technology, IEEE Contorl Systems Letters, and Automatica, and a board member of IET Control Theory and Applications. He is also the chair of IEEE CSS Technical Committee on Systems with Uncertainty.

受賞論文「Linear-Programming-based Decentralized Stabilizing Controller Synthesis for Interconnected Positive Systems and Its Optimality Property」
This study is concerned with decentralized stabilizing controller synthesis problem for interconnected systems constructed from positive subsystems. The main issue is how to design a controller for each subsystem locally so that positivity and stability of the overall interconnected system can be attained. Under a specific interconnection structure, the author has already shown that such a controller can be designed locally without any information about the rest of the positive subsystems. Namely, under the specific interconnection structure, we can reduce the original problem into a set of L₁ induced-norm optimal controller synthesis problems for subsystems each of which can be solved indeed locally via linear programming. On the basis of these preceding results, in this study, we show an optimality property of such local L₁ induced-norm optimal controllers in a global sense. More precisely, we prove that the set of L₁ induced-norm optimal controllers is indeed globally optimal in the sense that it minimizes the spectral abscissa of the coefficient matrix of the overall interconnected closed-loop system.

Mr. Shingo ABE (Student Member)
Received the M.Sc. degree from Graduate School of Science and Technology Department of Mathematics, Tokyo University of Science in 2008. He joined Toshiba Solutions Corporation in 2008. He has been a member of ICS Security Response Group of JPCERT/CC since 2014 as Information Security Analyst, especially in the area of IoT. He is currently a Ph.D student at the Graduate School of Engineering at Nagoya Institute of Technology.

受賞論文「Cyber Threat Information Sharing System for Industrial Control System (ICS)」
In pursuit of enhanced cyber security capability in the whole industry, an information sharing scheme for ICS-related security information is sought after. It is suggested that exchanging cyber threat information described in a specific machine-readable format can partly automate the security measure processes and eventually lighten the workload of technical personnel. This will also enable information sharing across the sector and accordingly the effective implementation of security measures (detect infection, block suspicious communication etc.) in an early stage. This paper proposes a system to share cyber threat information with a wide range of organisations and format of the data to be exchanged through the system.

○Young Author's Award

Mr. Eiji YOKOTA
He received the B.E. degree in system design engineering from Keio University, Yokohama, Japan, in 2018. He has been in the Master's course at Keio University, Yokohama, Japan. His research interests include acoustic system, distributed parameter systems, and control engineering.

受賞論文「Acoustic Impedance Control for Composing Virtual Sound Environment」
This study is intended to obtain high presence in acoustics. For that purpose, it is necessary to reproduce the sound environment of remote places. In this study, an acoustic technique that reproduces sound environments of remote places by recreating the dynamics of the environment at that place is proposed. In the proposed acoustic technique, the desired sound environment is attained by making listeners on the spot feel as if there were a wall that reflects the sound waves. By controlling the acoustic impedance at the position where the wall is constructed, the wall is virtually built. In addition, the acoustic impedance that can be arbitrarily determined at the position where the wall is constructed is set. As a result, by deciding the acoustic output from the secondary sound source so as to attain the desired acoustic impedance, the wall is virtually constructed to reproduce the desired sound environment.

○Poster Presentation Award

Mr. Yoshiki NAGATANI
He received the B.E. degree in mechanical engineering from the University of Electro-Communications, Tokyo, Japan, in 2017. He is currently pursuing the M.E. degree at the University of Electro-Communications. His research interests include theory of networked control especially self-triggered and event-triggered control.

受賞ポスター「A Path Searching Algorithm for Optimal Control Problems of Hybrid Systems Application to a Self-Triggered Control System」
This paper considers a finite-time optimal control problem on hybrid systems represented with finite automata. A typical approach to hybrid system problems is MLD (mixed logical dynamical) one. Meanwhile, this paper recasts the optimal control problem to a path searching problem on the finite automata. The proposed method adopts dynamic programming to the path searching problem. This paper deals with numerical examples about a self-triggered control system to show the effectiveness of the proposed method.