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IEEE/ICME International Conference on Complex Medical engineering, CME

作者： Zhanfeng Ji Takenao Sugi Satoru Goto Xingyu Wang Masatoshi Nakamura Department of Automation East China University of Science and Technology Shanghai China Department of Advanced Systems Control Engineering Saga University Saga Japan Research Institute of Systems Control Saga Japan

A multi-channel template extraction method is proposed for automatic EEG spike detection. The template is extracted automatically without any prior knowledge. The template extraction algorithm consists of three steps. Firstly, all possible spike events are detected. Secondly, the focus channels are identified for each event. Thirdly, the multi-channel template is extracted for each focus channel. The algorithm produces template adapted to not only individual patient, but also individual focus. The method was evaluated using the recordings from two epilepsy patients. The results suggested that template method should be of multi-channel for spike detection.

关键词： Correlation Nickel

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Diamond nanopit arrays fabricated by room-temperature nanoimprinting using diamond molds

Diamond nanopit arrays fabricated by room-temperature nanoim...

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2010 MRS Fall Meeting

作者： Kiyohara, Shuji Kumagai, Masaya Taguchi, Yoshio Sugiyama, Yoshinari Omata, Yukiko Kurashima, Yuichi Takikawa, Hirofumi Advanced Faculty of Electric and Control System Engineering Course Maizuru National College of Technology 234 Aza Shiroya Maizuru Kyoto 625-8511 Japan Application and Technical Section ELIONIX Inc. 3-7-6 Motoyokoyama Hachioji Tokyo 192-0063 Japan Department of Mechanical System Engineering University of Yamanashi 4-3-11 Takeda Kofu Yamanashi 400-8511 Japan Department of Electrical and Electronic Information Engineering Toyohashi University of Technology Toyohashi Aichi 441-8580 Japan

ISBN: (纸本)9781605112596

We have investigated the nanopatterning of chemical vapor deposited (CVD) diamond films in room-temperature nanoimprint lithography (RT-NIL), using a diamond nanodot mold. We have proposed the use of polysiloxane as an electron beam (EB) mask and RT-imprint resist materials. The diamond molds of cylinder dot using the RT-NIL process were fabricated with polysiloxane oxide mask in EB lithography technology. The dot in minimum diameter is 500 nm. The pitch between the dots is 2 μm, and dot has a height of about 600 nm. It was found that the optimum imprinting conditions for the RT-NIL : time from spin-coating to imprinting t1 of 1 min , pressure time t2 of 5 min, imprinting pressure P of 0.5 MPa. The imprint depth obtained after the press under their conditions was 500 nm. We carried out the RT-NIL process for the fabrication of diamond nanopit arrays, using the diamond nanodot molds that we developed. The resulting diamond nanopit arrays with 500 nm-diameter and 200 nm-depth after the electron cyclotron resonance (ECR) oxygen ion beam etching were fabricated. The diameter of diamond nanopit arrays was in good agreement with that of the diamond nanodot mold. © 2011 Materials Research Society.

关键词： Silicones

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Fabrication of Diamond Nanopit arrays by Room-temperature Curing Nanoimprint Lithography Using Glass-like Carbon Molds

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MRS Online Proceedings Library 2011年第1期1395卷 27-32页

作者： Shuji Kiyohara Chigaya Ito Ippei Ishikawa Hirofumi Takikawa Yoshio Taguchi Yoshinari Sugiyama Yukiko Omata Yuichi Kurashima Electric and Control System Engineering Course Faculty of Advanced Engineering Maizuru National College of Technology Maizuru Kyoto Japan Department of Electrical and Electronic Information Engineering Toyohashi University of Technology Toyohashi Aichi Japan Application and Technical Section ELIONIX INC. Hachioji Tokyo Japan Department of Mechanical System Engineering University of Yamanashi Kofu Yamanashi Japan

We have proposed the use of glass-like carbon (GC), as mold material because the 27-maximum etching selectivity of polysiloxane film against GC, which was approximately six times larger than that of polysiloxane film against chemical vapor deposited (CVD) diamond film. We have investigated the fabrication of diamond nanopit arrays by room-temperature curing nanoimprint lithography (RTC-NIL) using GC mold, as applications to the emitter and the micro-gear. The polysiloxane has in the state of sticky liquid at room-temperature and negative-exposure characteristic. Therefore, the polysiloxane was used as RTC-imprint resist material, and also used as electron beam (EB) resist (oxide mask) material in EB lithography. We have fabricated the cylindrical GC nanodot mold with 500 nm-diameter, 600 nm-height and 2 µm-pitch. We carried out RTC-NIL using GC mold under the following optimum conditions: time from spin-coating to imprint of 1 min, imprinting pressure of 0.5 MPa and imprinting time of 5 min. Then, we have processed the diamond film with an electron cyclotron resonance (ECR) oxygen ion shower. We have fabricated diamond nanopit array with 250 nm-depth and 500 nm-diameter. The diameter of diamond nanopit pattern was in good agreement with that of GC mold. Moreover, the depth of the diamond nanopit patterns fabricated by RTC-NIL using cylindrical GC mold was three times larger than that using conical diamond mold.

关键词： diamond nanostructure ion-beam processing

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CRA based control of fractional order systems subject to control signal constraint

CRA based control of fractional order systems subject to con...

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International Conference on control, Automation and systems ( ICCAS)

作者： Mohammad Tabatabaei Mohammad Haeri Department of Electrical Engineering Khomeinishahr Branch Islamic Azad University Isfahan Iran Advanced Control Systems Laboratory Department of Electrical Engineering Sharif University of Technology Tehran Iran

An approach is proposed to control transient response of fractional order systems with maximum permissible control signal. This goal is achieved using a newly suggested characteristic ratio assignment method. Based on the proposed method, the generalized time constant τ and the characteristic ratios including their pattern, an adjustable parameter β, and the product of two successive characteristic ratios ρ are determined such that predefined level of overshoot and time specification of closed loop step response are obtained while the control signal is confined to a pre assigned maximum magnitude. The raised issue is solved by defining an optimization problem in which the design parameters are τ, β, and ρ. Numerical simulations results are provided to illustrated performance of the proposed method.

关键词： Transfer functions Transient response Optimization Polynomials Mathematical model Numerical simulation Signal processing

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Automatic spike detection based on real-time multi-channel template

Automatic spike detection based on real-time multi-channel t...

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2011 4th International Conference on Biomedical engineering and Informatics(第四届生物医学工程与信息学国际会议 BMEI 2011)

作者： Zhanfeng Ji Xingyu Wang Satoru Goto Masatoshi Nakamura Takenao Sugi Key Laboratory of Advanced Control and Optimization for Chemical Processes Ministry of Education Sc Key Laboratory of Advanced Control and Optimization for Chemical Processes Ministry of Education Sc Department of Advanced Systems Control Engineering Saga University Saga Japan

Automatic EEG spike detection provide valuable information for diagnosis of epilepsy. In the past 30 years, a number of algorithms were proposed. However, the basic idea of most algorithms is to identify spike activities. We have developed an algorithm based on identify non-spike activities for off-line analysis. In this paper, we improved the algorithm for online application using real-time template. Template method is a typical spike detection method. It was not widely employed because of the difficulty of making template. Our results suggested that multichannel template is meaningful and effective for real-time detection. Spike activities can be detected with a delay of about 2 s. We also designed an simple user-friendly monitor interface for monitor and review spike events in real-time.

关键词： spike detection real-time multi-channel template

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Remote operation system including simulator function for OTEC plant

Remote operation system including simulator function for OTE...

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50th Annual Conference on Society of Instrument and control Engineers, SICE 2011

作者： Goto, Satoru Nagamizo, Yoshiya Matsuda, Yoshitaka Sugi, Takenao Morisaki, Takafumi Ikegami, Yasuyuki Egashira, Naruto Department of Advanced Technology Fusion Saga University Honjomachi Saga 840-8502 Japan Institute of Ocean Energy Saga University Honjomachi Saga 840-8502 Japan Department of Control and Information Systems Engineering Kurume National College of Technology 1-1-1 Komorino Kurume Fukuoka 820-8555 Japan

ISBN: (纸本)9784907764395

Ocean thermal energy conversion (OTEC) is an electric power generation system which uses temperature difference between warm seawater at surface and cold seawater in depth. OTEC plants are often set up on the ocean or isolated areas, therefore, remote operation of the OTEC plant is required. In this study, the remote operation system of an OTEC plant is proposed. The proposed remote operation system includes simulator function of the OTEC plant, and the simulation model and the actual OTEC plant can be exchanged. By using the proposed remote operation system, both the simulation model and the OTEC plant can be operated from distant place through the Internet. The proposed remote operation system is verified by an actual OTEC basic experimental equipment. © 2011 SICE.

关键词： Simulators

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Remote Operation System Including Simulator Function for OTEC Plant

Remote Operation System Including Simulator Function for OTE...

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SICE Annual Conference

作者： Satoru GOTO Yoshiya NAGAMIZO Yoshitaka MATSUDA Takenao SUGI Takafumi MORISAKI Yasuyuki IKEGAMI Naruto EGASHIRA Department of Advanced Technology Fusion Saga University Institute of Ocean Energy Saga University Department of Control and Information Systems Engineering Kurume National College of Technology

ISBN: (纸本)9784907764388

关键词： Remote operation system Simulator function Ocean thermal energy conversion The Internet

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Comparison of Cellulose Decomposition by Microwave Plasma and Radio Frequency Plasma

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Green and Sustainable Chemistry 2011年第3期1卷 85-91页

作者： Katsuya Konno Hajime Onodera Kazuhisa Murata Kaoru Onoe Tatsuaki Yamaguchi Hitachi Automotive Systems Ltd Development Div. Drive Control Systems Div. Department of Life and Environmental Sciences Faculty of Engineering Chiba Institute of Technology National Institure of Advanced Industrial Science and Technology (AIST) AI

Biomass conversion by plasma has the advantage of mainly producing gaseous products, H2, CO and CO2. Though the thermal plasma has been used for this conversion, the plasma temperature is too high to be unfit for the conversion biomass. The temperature of cold plasma, however, is lower under 3000 K. It expects to be adequate for biomass conversion. Cold plasma can be obtained with irradiation microwave (2.45 GHz) or radio frequency (13.5 MHz) under reduce gas pressure. Therefore, in present study, the effective decomposition of cellulose by microwave plasma (MWP) and radio frequency plasma (RFP) is examined. The conversion of cellulose by MWP (XMWP) is higher than that by RFP (XRFP), irrespective of the reaction time. XMWP and XRFP reach 92.8 wt% at 10 min and 68.1 wt% at 30 min. The maximum yield of gaseous products (Ygas) by MWP is 85.1 wt% at 10 min, higher by 23.2 wt% than Ygas by RFP at 30 min. The amount of H2 and CO obtained by MWP is 18.0 mmol/g and 23.5 mmol/g, it is larger than that obtained by RFP. Comparing the relationship between conversion and yield, Ygas of MWP is slightly higher than that of RFP under X of 60 wt%, and both Ygas is almost same over 60 wt%. The amount of H2 and CO obtained by MWP is larger by 9.3 mmol/g and 9.6 mmol/g than that obtained by RFP. C, H and O element in cellulose is mainly distributed to H2 and CO by MWP. RFP mainly distributes H and O element to the other gases without H2 and CO. In addition, a large amount of C element is remains in the residue. Those results is found that MWP was more suitable for cellulose gasification than RFP, since MWP can highly convert C, H and O element to H2 and CO by higher energy of microwave frequency in comparison with radio frequency.

关键词： Microwave Plasma Radio Frequency Plasma Cellulose

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Poloidal magnetic flux profile control in tokamaks via normalized coprime factorization robust control

Poloidal magnetic flux profile control in tokamaks via norma...

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IEEE Conference on control Technology and Applications (CCTA)

作者： Justin Barton Yongsheng Ou Chao Xu Eugenio Schuster Michael Walker Department of Mechanical Engineering and Mechanics Lehigh University Bethlehem PA USA Center for Intelligent and Biomimetic Systems Shenzhen Institute of Advanced Technology Shenzhen China Department of Control Science and Engineering Institute of Cyber-Systems and Control Zhejiang University Hangzhou China General Atomics San Diego CA USA

The potential steady-state operation of a fusion tokamak, with good confinement and a high fusion gain, is related to setting up a suitable current density profile in the device. Experiments at the DIII-D tokamak focus on creating the desired current profile during the plasma current ramp-up and early flat-top phases of the discharge with the aim of maintaining this target profile throughout the subsequent phases of the discharge. The time evolution of the current density profile in a tokamak is related to the time evolution of the poloidal magnetic flux profile, which is modeled in normalized cylindrical coordinates by a partial differential equation referred to as the magnetic diffusion equation. Extremum seeking and nonlinear programming techniques have been employed to find optimal open-loop (feedforward) solutions to the finite time control problem during the ramp-up and early flat-top phases. In order to reject the effects of external disturbances to the system, we propose an optimal H ∞ feedback control input that is added to the optimal feedforward control input to regulate the poloidal flux profile around the desired reference trajectories of the system. The combined feedforward + feedback, model-based controller is then tested through simulation.

关键词： Mathematical model Tokamaks Feedforward neural networks Uncertainty Toroidal magnetic fields Equations

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Diamond Nanopit Arrays Fabricated by Room-Temperature Nanoimprinting using Diamond Molds

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MRS Online Proceedings Library 2011年第1期1282卷 117-122页

作者： Shuji Kiyohara Masaya Kumagai Yoshio Taguchi Yoshinari Sugiyama Yukiko Omata Yuichi Kurashima Hirofumi Takikawa Advanced Faculty of Electric and Control System Engineering Course Maizuru National College of Technology Maizuru Japan Application and Technical Section ELIONIX INC. 3-7-6 Motoyokoyama Hachioji Tokyo Japan Department of Mechanical System Engineering University of Yamanashi 4-3-11 Takeda Kofu Yamanashi Japan Department of Electrical and Electronic Information Engineering Toyohashi University of Technology Toyohashi Aichi Japan

关键词： diamond ion-beam processing nanoscale

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