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7th International Conference on Electrical and Electronics engineering, ELECO 2011

作者： Nazarian, Peyman Haeri, Mohammad Electrical Engineering Department Zanjan Branch Islamic Azad University Zanjan Iran Advanced Control Systems Lab. Electrical Engineering Department Sharif University of Technology Tehran Iran

ISBN: (纸本)9786050102048

In this paper, a new method is proposed to determine parameters of some types of fractional order models to represent a system dynamics using its step response. The model structure is assumed to have rational commensurateorder as α = M/N . By this assumption infinite terms of the model step response is converted into finite terms limited to N. The proposed method is practically applicable on all fractional order model structures due to the order approximation imposed by the limited precisions in available computational tools. © 2011 Chamber of Turkish Electric.

关键词： Model structures

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Visual flight control of a quadrotor using bioinspired motion detector

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International Journal of Navigation and Observation 2012年第1期2012卷

作者： Zhang, Lei Zhang, Tianguang Wu, Haiyan Borst, Alexander Khnlenz, Kolja Institute of Automatic Control Engineering (LSR) Technische Universität Mnchen 80290 München Germany Department of Systems and Computational Neurobiology Max Planck Institute of Neurobiology D-82152 Martinsried Am Klopferspitz 18 Germany Institute for Advanced Study (IAS) Technische Universität Mnchen 80290 München Germany

Motion detection in the fly is extremely fast with low computational requirements. Inspired from the fly's vision system, we focus on a real-time flight control on a miniquadrotor with fast visual feedback. In this work, an elaborated elementary motion detector (EMD) is utilized to detect local optical flow. Combined with novel receptive field templates, the yaw rate of the quadrotor is estimated through a lookup table established with this bioinspired visual sensor. A closed-loop control system with the feedback of yaw rate estimated by EMD is designed. With the motion of the other degrees of freedom stabilized by a camera tracking system, the yaw-rate of the quadrotor during hovering is controlled based on EMD feedback under real-world scenario. The control performance of the proposed approach is compared with that of conventional approach. The experimental results demonstrate the effectiveness of utilizing EMD for quadrotor control. Copyright © 2012 Lei Zhang et al.

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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, BMEI 2011

作者： Ji, Zhanfeng Wang, Xingyu Sugi, Takenao Goto, Satoru Nakamura, Masatoshi Key Laboratory of Advanced Control and Optimization for Chemical Processes East China University of Science and Technology Ministry of Education Shanghai China Department of Advanced Systems Control Engineering Saga University Saga Japan Research Institute of Systems Control Saga University Saga Japan

ISBN: (纸本)9781424493524

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 multi-channel 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. © 2011 IEEE.

关键词： multi-channel template real-time spike detection Spike spike spikes jigs(templates) Real time algorithms MONITOR analysis of flowline

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Remote control of robot arms via network by force-free control followed template matching

Remote control of robot arms via network by force-free contr...

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

作者： Pallegedara, Achala Matsuda, Yoshitaka Matsumoto, Takeo Tsukamoto, Kenta Egashira, Naruto Goto, Satoru Department of Science and Advanced Technology Graduate School of Science and Engineering Saga University Saga 840-8502 Japan Department of Advanced Technology Fusion Graduate School of Science and Engineering Saga University Saga 840-8502 Japan Department of Control and Information Systems Technology Kurume National College of Technology Fukuoka 830-8555 Japan

ISBN: (纸本)9784907764395

Continuous advancements and rapid developments of electronics, computing, network and web technologies have been much concerned in recent period of time. The emerging technologies including teleoperation, communication and control via web, visual servo control and so forth, have induced high motivation and demand towards the researchers who belong to conventional control and robotics. In this research, teleoperation and template matching techniques are applied to control the motion of industrial robot arms remotely via network. The system has two motion control behaviors;rough motion of the robot arm is handled by teleoperation technique and accurate motion is governed by visual template matching. Two behaviors are switched, from one to another appropriately according to the desired motion. The effectiveness of the proposed methodology is verified by the experimental results. © 2011 SICE.

关键词： Remote control

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Inverse dynamics compensation via 'simulation of feedback control systems'

Inverse dynamics compensation via 'simulation of feedback co...

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作者： Tagawa, Y. Tu, J.-Y. Stoten, D.P. Department of Mechanical Systems Engineering Tokyo University of Agriculture and Technology 2-24-16 Nakacho Koganei Tokyo 184-8588 Japan Department of Mechanical Engineering National Tsinghua University Hsinchu City Taiwan Advanced Control and Test Laboratory University of Bristol Bristol United Kingdom

In many applications within the fields of science, engineering, mathematics, and socio-economics, the 'inverse problem' (i.e. the problem of determining a system's input from its output) is commonplace. The current paper presents a new concept for solving the inverse problem, which the authors call inverse dynamics compensation via 'simulation of feedback control systems' (IDCS). IDCS is a numerical method that obtains an approximate inverse dynamic solution via a feedback control simulation, using only the forward dynamic model of the linear or non-linear system. Simulations are ideal environments for feedback control, in the sense that they can be completely noise-free and precisely known, so that the IDCS method can be tuned for the best possible performance. It is seen that IDCS can use the advantages of such ideal control simulation performance in the real world of physical implementations. This paper first introduces the basic idea of IDCS. Then, the effectiveness of the proposed method is demonstrated via three illustrative examples, in which the systems to be controlled have continuous and discontinuous non-linearities. IDCS performance is also investigated via physical experimentation on a non-linear servohydraulic test rig. Finally, extensions of the basic IDCS formulation are introduced which are potentially useful for the solution of additional practical problems. © Authors 2011.

关键词： Inverse problems

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Topography estimation of visual evoked potential by combinational use of mathematical models

Topography estimation of visual evoked potential by combinat...

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IEEE/Institute of Complex Medical engineering International Conference on Complex Medical engineering

作者： Goto, Kazuhiko Sugi, Takenao Goto, Satoru Yamasaki, Takao Tobimatsu, Shozo Goto, Yoshinobu Department of Advanced Systems Control Engineering Saga University Honjyo-machi 1 Saga 840-8502 Japan Department of Occupational Therapy International University of Health and Welfare Fukuoka Japan Department of Clinical Neurophysiology Kyushu University Fukuoka Japan

ISBN: (纸本)9781424493241

To analyze the topographical distribution of visual evoked potentials (VEPs) in electroencephalographic (EEG) record brings about the significant information for visual processing in human brain. This study proposes a method for estimating topographical distribution of VEP from the separated power spectrum components by combining the models. VEPs with various temporal frequencies were recorded from nine healthy adults. Original power spectrum consisting of VEP, background activities, artifacts and other components were then obtained. To the extract the VEP components from the original power spectrum, models corresponding to background activities especially for posterior dominant alpha rhythm, low frequency component and high frequency component caused from electromyographic (EMG) artifact were constructed and those parameters were estimated. Finally, VEP components were calculated by subtracting those components from the original power spectrum. Topographical distribution of both first harmonic (1F) and second harmonic (2F) components of VEP were obtained by the proposed method. Estimated other components except VEPs were also investigated. Merits and usefulness of the proposed method were analyzed by comparing the conventional stimulus-locked averaging method in the time domain. Proposed method has several advanced points for conventional averaging method. Particularly, posterior dominant alpha rhythm and EMG artifact were directly taken into account in the VEP components estimation. Therefore, accurate estimation of VEP components can be done even if those components were contaminated with raw EEG. To obtain the topographical distribution of 1F and 2F components respectively is also possible. © 2011 IEEE.

关键词： Power spectrum

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Tuning method for second-order active disturbance rejection control

Tuning method for second-order active disturbance rejection ...

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作者： Chen, Xing Li, Donghai Gao, Zhiqiang Wang, Chuanfeng State Key Lab of Power Systems Dept of Thermal Engineering Tsinghua University Beijing 100084 China Center for Advanced Control Technologies Department of Electrical and Computer Engineering Cleveland State University Cleveland OH 44115 United States

ISBN: (纸本)9789881725592

A simple tuning method for second-order active disturbance rejection control (ADRC) that achieves high performance and good robustness for a wide range of processes is presented. ADRC is a novel control strategy whose exciting performance has been shown by literatures. The proposed method makes ADRC become easy to tune and more practical. Once the desired settling time is given, only one parameter need to be tuned during the design procedure, which can be found by monotonously increasing. Examples are given to show the effectiveness and flexibility of the method. Simulations demonstrate that second-order ADRC can handles processes with various characteristics, including low- and high-order, large dead time, non-minimum phase, unstable and distributed parameter systems. © 2011 Chinese Assoc of Automati.

关键词： Monte Carlo methods

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Micro-organic Light-emitting Devices Fabricated by Room-temperature Curing Nanoimprint Lithography Using Diamond Molds

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MRS Online Proceedings Library 2011年第1期1395卷 33-38页

作者： Ippei Ishikawa Taisuke Okuno Shuji Kiyohara 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 Application and Technical Section ELIONIX INC. Hachioji Tokyo Japan Department of Mechanical System Engineering University of Yamanashi Kofu Yamanashi Japan

Organic light-emitting devices (OLEDs) have attracted a lot of attention as a next generation display. In this study, we fabricated the micro-OLEDs by room-temperature curing nanoimprint lithography (RTC-NIL) using diamond molds. The diamond has superior durability and was used as mold material for RTC-NIL. The diamond molds have been fabricated by electron cyclotron resonance (ECR) oxygen ion shower with polysiloxane oxide mask in the electron beam (EB) lithography technology. We fabricated the diamond mold pattern with 10 µm-square dot. The diamond molds have been used to form an insulating layer in micro-OLEDs. The optimum thickness of N,N’-Diphenyl-N,N’-di(m-tolyl)benzidine (TPD) [hole transport layer], Tris(8-quinolinolato)aluminum (Alq3) [electron transport layer] and aluminum (Al) [cathode] were 40 nm, 40 nm and 200 nm, respectively. We succeeded in formation of insulating layer in micro-OLEDs and operation of micro-OLEDs with 10 µm-square-dot by RTC-NIL using diamond molds.

关键词： diamond optoelectronic microelectronics

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A Modified Eigenvector Method for Blind Deconvolution of MIMO systems Using the Matrix Pseudo-Inversion Lemma

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Circuits and systems 2011年第1期2卷 7-13页

作者： Mitsuru Kawamoto Kiyotaka Kohno Yujiro Inouye Koichi Kurumatani Information Technology Research Institute National Institute of Advanced Science and Technology Tsukuba Japan Department of Electronic Control Engineering Yonago National College of Technology Yonago-city Japan Department of Electronic and Control Systems Engineering Shimane University Matsue Japan

Recently we have developed an eigenvector method (EVM) which can achieve the blind deconvolution (BD) for MIMO systems. One of attractive features of the proposed algorithm is that the BD can be achieved by calculating the eigenvectors of a matrix relevant to it. However, the performance accuracy of the EVM depends highly on computational results of the eigenvectors. In this paper, by modifying the EVM, we propose an algorithm which can achieve the BD without calculating the eigenvectors. Then the pseudo-inverse which is needed to carry out the BD is calculated by our proposed matrix pseudo-inversion lemma. Moreover, using a combination of the conventional EVM and the modified EVM, we will show its performances comparing with each EVM. Simulation results will be presented for showing the effectiveness of the proposed methods.

关键词： Blind Signal Processing Blind Deconvolution Eigenvector Methods Super-Exponential Mthods MIMO systems Matrix Pseudo-Inversion Lemma

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Identification of fractional order model structures using conversion of infinite terms of a response to finite terms

Identification of fractional order model structures using co...

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International Conference on Electrical and Electronics engineering, ELECO

作者： Peyman Nazarian Mohammad Haeri Electrical Engineering Department Islamic Azad University Zanjan Iran Advanced Control Systems Laboratory Electrical Engineering Department Sharif University of Technology Tehran Iran

In this paper, a new method is proposed to determine parameters of some types of fractional order models to represent a system dynamics using its step response. The model structure is assumed to have rational commensurate order as α=M/N. By this assumption infinite terms of the model step response is converted into finite terms limited to N. The proposed method is practically applicable on all fractional order model structures due to the order approximation imposed by the limited precisions in available computational tools.

关键词： Noise Noise measurement Estimation Computational modeling Accuracy Mathematical model Parameter estimation

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