| 会告：2008 SICE Annual Conference Awardの贈呈
Dr. Gerald STEINER
He received the Dipl.-Ing. and Dr.techn. degrees in Electrical Engineering from the Graz University of Technology in 2002 and 2006, respectively, where he also served as research and teaching assistant. His research visits include the University of Leeds, UK, the Universita degli Studi di Genova, Italy, and the University of Auckland, New Zealand. He was awarded the Gyorgi Striker Junior Paper Award at the last IMEKO World Congress of the International Measurement Confederation in 2006 in Rio de Janeiro. He is currently with Anton Paar GmbH, Graz, Austria, as R&D project coordinator for process instrumentation and serves as external lecturer for process instrumentation and research project leader in the field of industrial process tomography at the Graz University of Technology. He has authored and co-authored more than 60 international papers and patents. His research interests include industrial inverse problems, sensor fusion, and process instrumentation.
受賞論文「Electrical Capacitance Tomography with Physical Bound Constraints」
Electrical Capacitance Tomography (ECT) can be applied for the solution of complex measurement tasks in industrial process monitoring, e.g., multiphase flow imaging. ECT requires the solution of a challenging ill-posed inverse problem that usually needs regularization. A well-known method is regularized least squares minimization. Prior information that is often neglected in the minimization are physical bounds of parameters. Classical techniques for constraint handling in optimization can be computationally prohibitive for industrial real-time applications. To overcome this limitation a novel approach based on a nonlinear parameter transformation is proposed. The achievable improvement is demonstrated with measurement data from a prototype sensor.
Prof. Hiroshi ITO (Member)
He received the B.E degree, the M.E degree, the Ph.D degree in Electrical Engineering from Keio University, Yokohama, Japan in 1990, 1992 and 1995, respectively. From 1994 to 1995, he was a research fellow of the Japan Society for the Promotion of Science. He has been with Kyushu Institute of Technology, Japan since 1995. He is currently an Associate Professor at the Department of Systems Design and Informatics. From 1998 to 1999, he held visiting researcher positions in Northwestern University and University of California, San Diego. His main research interests include stability of nonlinear systems, theory of robustness, multi-rate sampled-data control, asynchronous systems and large-scale systems with emphasis on applications to biological systems and communication networks.
受賞論文「Lyapunov Functions for Networks of Asymmetrically iISS Systems and Circadian Oscillations」
The paper proposes new tools enabling us to assess stability of networks of scalar dissipative systems. One of the aims of the development is to determine ranges of parameters which are necessary for maintaining robustly persistent circadian oscillations in the cells of Drosophila. The paper proposes a Lyapunov-type analytical approach instead of numerical approaches which have been dominant in system-theoretic studies of circadian oscillations. Since each substance in a biological network involves nonlinear autonomous and interactive dynamics, the inherited dissipativity is asymmetric with respect to a balance point. The paper shows how to make use of integral input-to-state stability (iISS) in the study of such a class of systems covering biological networks. By presenting mathematical tools to verify the stability and construct Lyapunov functions analytically, the paper attempts to introduce a unique and truly system-theoretic path into the research of biological dynamics.
○Young Author's Award
Mr. Dai OWAKI (Student member)
He received the B. E. degree from Dept. of Electrical Engineering/Electronics/Information Electronics and the M. E. degree from Dept. of Computer Science and Engineering, Graduate School of Engineering, Nagoya University in 2004 and 2006. He is currently a candidate for Ph. D. degree in Dept. of Electrical and Communication Engineering, Tohoku University. His research interests are motor control on embodied robotic system, particularly bipedal locomotion. He received the 2008 IEEE Robotics and Automation Society Japan Chapter Young Award (ICRA'08).
受賞論文「Gait Transition between Passive Dynamic Walking and Running by Changing the Body Elasticity」
The control and mechanical systems of an embodied agent should be tightly coupled so that useful functionalities such as adaptivity can emerge. This indicates that the mechanical system as well as the control system should be capable of a certain level of "computation" for generating the behavior. However, the extent to which "computational offloading" from the control system to the mechanical system should be achieved requires further clarification. In order to effectively consider this, we herein focus on a passive dynamic walking and running biped whose behavior is generated purely by its mechanical system and investigate how the body's properties influence the resulting behavior. Through numerical simulations, we have found that two elastic parameters, namely, leg spring constant and hip coil spring constant, play a crucial role as to which of various kinds of stable gait patterns are generated. To the best of our knowledge, this has not previously been addressed. The results obtained are expected to shed new light on how to achieve gait transition between passive dynamics walking and running.
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