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SICE Annual Conference

作者： Shigeto Nishida Takenao Sugi Akio Ikeda Takashi Nagamine Hiroshi Shibasaki Masatoshi Nakamura Department of Computer and Communication Engineering Fukuoka Institute of Technology Fukuoka Japan Department of Electrical and Electronic Engineering Saga University Saga Japan Department of Neurology School of Medicine Kyoto University Kyoto Japan Department of System Neuroscience Sapporo Medical University Sapporo Japan Takeda General Hospital Kyoto Japan Department of Advanced Systems Control Engineering Saga University Saga Japan

A method for detecting spikes and slow burst in photic evoked electroencephalogram (EEG) was proposed. The spikes were detected by combining methods of the morphological filter and the similarity coefficient in the time domain. The slow burst was detected by using pole of AR model in the frequency domain. The proposed method was applied for the photic evoked EEG data containing spikes and slow burst, and brought satisfactory coincidence with the results interpreted by a qualified electroencephalographer.

关键词： Feature extraction Electroencephalography Filters Frequency Biomedical engineering Medical diagnostic imaging Epilepsy Nervous system Neuroscience Hospitals

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Quantized Feedback Stabilization of Hybrid Impulsive control systems

Quantized Feedback Stabilization of Hybrid Impulsive Control...

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Joint 48th IEEE Conference on Decision and control and 28th Chinese control Conference

作者： Zhichun Yang Yiguang Hong Zhong-Ping Jiang Xiaoli Wang Chongqing Key Lab of Operations Research and System Engineering Department of Mathematics and Computer ScienceChongqing Normal University Institute of Systems Science Chinese Academy of Sciences Key Laboratory of Systems and Control Institute of Systems ScienceChinese Academy of Sciences Dept.of Electrical & Computer Engineering Polytechnic Institute of New York University

In this paper,we consider the feedback stabilization problem of impulsive linear control systems with quantized input signals and quantized output *** concepts including quasi-invariant sets and attracting sets for hybrid impulsive quantized systems are *** on these concepts and the analysis of related dynamic properties,we propose hybrid quantized control schemes to stabilize the considered impulsive systems via state and output feedback.

关键词： quantization impulsive systems hybrid control stabilization

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Particle filtering of point processes observation with application on the modeling of visual cortex neural spiking activity

Particle filtering of point processes observation with appli...

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International IEEE/EMBS Conference on Neural engineering, CNE

作者： Yousef Salimpour Hamid Soltanian-Zadeh Computational Neuroscience in School of Cognitive Sciences Institute of Studies in Fundamental Sciences Tehran Iran Department of Radiology Henry Ford Health System Detroit MI USA Control and Intelligent Processing Center of Excellence(CIPCE) Department of Electrical and Computer Engineering University of Tehran Tehran Iran

Recording of neural response to specific stimulus in a repeated trial is very common in neuroscience protocol. The perstimulus time histogram (PSTH) is a standard tool for analysis of neural response. However it could not capture the non-deterministic properties of the neuron especially in higher level cortical area such as inferior temporal cortex. The stochastic state point process filter theory is used for the estimation of the conditional intensity of the point process observation as a time varying firing rate and the particle filter is used to numerically estimate this density in time. The particle filters were applied to the results of the point process observation for compensating the Gaussian assumption. The results of applying point process modeling on a real data from inferior temporal cortex of macaque monkey indicates that, based on the assessment of goodness-of-fit, the neural spiking activity and biophysical property of neuron could be captured more accurately in compare to conventional methods.

关键词： Filtering Brain modeling Neurons Stochastic processes State estimation Particle filters Histograms Mathematical model Neural engineering Neuroscience

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Wave-front arrival time analysis using wide-area frequency measurements

Wave-front arrival time analysis using wide-area frequency m...

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IEEE General Meeting Power& Energy Society

作者： Jing Ma Jinlong Li Zengping Wang Jie Wu Tao Xia Lang Chen Yilu Liu School of Electrical and Electronic Engineering North China Electric Power University Beijing China Bradley Department of Electrical and Computer Engineering Virginia Polytechnic Institute Blacksburg VA USA Key Laboratory of Power System Protection and Dynamic Security Monitoring and Control under Ministry of Education North China Electric Power University Beijing China Zhejiang Electric Power Design Institute Hangzhou China

Due to the influence of the local noise at the distribution level, the frequency curve obtained from the frequency disturbance recorder (FDR) unit is too non-stationary to observe its wave-front directly, which causes some problems in the event location estimation method. In this paper, a morphological filter (MF) is employed to extract the wave-front arrival time and the trend of the frequency curve. With the help of the MF, the accuracy of the event location method is greatly improved.

关键词： Frequency measurement Frequency estimation Power system measurements Network servers Wide area measurements Filters Web server Global Positioning system Frequency synchronization Power system dynamics

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A Self-Repairable Microprocessor

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ECS Transactions 2009年第1期18卷

作者： Yuanjiang Xie Xiang Fu Zijian He Yang Zhao Yu Hu Xiaowei Li Institute of Computing Technology Chinese Academy of Sciences Department of Computer Science and Engineering University of California Riverside Key Laboratory of Computer System and Architecture Institute of Computing Technology Chinese Academy of Sciences No. 6 Ke-Xue-Yuan South Road Beijing Beijing 100190 China

With increasing defect density, microprocessors, especially the embedded caches, will encounter more faults. Adding spare resources to replace defective components is a widely accepted method for yield enhancement. In this work, a repair method using content addressable memory combined with spare bits, as well as a novel fault injection method is proposed. With the proposed fault injection technique, various numbers and types of faults can be flexibly injected into the silicon. A wireless sensor network system using our self-repairable microprocessor (SRP) is developed to prove the effectiveness of the proposed technique.

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Tool support for the design of self-optimizing mechatronic multi-agent systems

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International Journal on Software Tools for Technology Transfer 2008年第3期10卷 207-222页

作者： Burmester, Sven Giese, Holger Münch, Eckehard Oberschelp, Oliver Klein, Florian Scheideler, Peter Software Engineering Group Department of Computer Science University of Paderborn Paderborn Germany System Analysis and Modeling Group Hasso Plattner Institute University of Potsdam Potsdam Germany Control Engineering and Mechatronics University of Paderborn Paderborn Germany Heinz Nixdorf Institute University of Paderborn Paderborn Germany

Complex technical systems, such as mechatronic systems, can exploit networking as well as the computational power available today to achieve an automatic improvement of the technical system performance at run-time through self-optimization. To realize this vision, appropriate means for the design of such self-optimizing mechatronic systems are required. Well-established techniques and tools for the modeling of cognitive behavior, reflective behavior, and control behavior exist. However, to really enable self-optimization and its full potential, these different aspects have to be safely integrated in a manner that remains comprehensible to the designer. In this article, we present how this required integration has been realized at the semantic level by extending the unified modeling language (UML), and at the tool level by integrating the CAE tool CAMeL and the CASE tool Fujaba real-time tool suite. The presented Mechatronic UML approach supports the design of verifiable, complex, reconfigurable mechatronic systems using the multi-agent system metaphor. © Springer-Verlag 2008.

关键词： Multi agent systems

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architecture of timing synchronization for MIMO-OFDM WLAN systems

Architecture of timing synchronization for MIMO-OFDM WLAN sy...

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2008 4th IEEE International Conference on Circuits and systems for Communications, ICCSC

作者： Cho, Jongmin Huynh, Trong Anh Kim, Jinsang Cho, Won-Kyung Computer System Architecture and VLSI Design Laboratory Department of Electronics and Radio Engineering Kyung Hee University 1 Seocheon Kihung Yongin Kyungki 449-701 Korea Republic of

ISBN: (纸本)9781424417087

In this paper, we present a timing synchronization scheme of the next generation IEEE 802.11n wireless LAN standard which is based on MIMO-OFDM technique. The proposed timing synchronization method takes two steps which consist of two modified auto-correlators. For coarse timing synchronization, a sliding window differentiator is used after a conventional auto-correlation in order to avoid plateau problem. The conjugate symmetry property of L-LTS is used for fine timing synchronization. Since cross-correlation based methods are not required, the computational complexity and the number of multiplier can be reduced. In order to reduce the hardware complexity, we have used sign comparators (SC) instead of using multipliers. Based on simulation results, the proposed method outperforms a conventional method. The proposed scheme can be applied to IEEE 802.11n systems and can easily be expanded to frequency synchronization scheme. ©2008 IEEE.

关键词： Orthogonal frequency division multiplexing

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Igital redesign of the decentralized adaptive control for linear large-scale systems with actuator faults

Igital redesign of the decentralized adaptive control for li...

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10th IASTED International Conference on control and Applications, CA 2008

作者： Tsai, J.S.H. Lin, M.H. Guo, S.M. Sun, P.Y. Shieh, L.S. Liu, C.R. Department of Electrical Engineering Control System Laboratory National Cheng Kung University Tainan 701 Taiwan Department of Computer Science and Information Engineering National Cheng Kung University Tainan 701 Taiwan Department of Electrical and Computer Engineering University of Houston Houston TX 77204-4005 United States

ISBN: (纸本)9780889867468

A novel digital redesign of the analog model-reference-based decentralized adaptive controller is proposed for the sampled-data large scale system consisting of N interconnected linear subsystems with actuator faults. The adaptation of the analog controller gain is derived by using the model-reference adaptive control theory based on Lyapunov method. In this paper, it is shown that the sampled-data decentralized adaptive control system is theoretically possible to asymptotically track the desired output with a specified performance even when actuator faults occur. Then, a method of actuator fault recovery is proposed. With the estimated faults, one can use the proposed input compensation method to solve actuator faults. In this paper, we also introduce a prediction-based digital redesign method to develop the corresponding sampled-data controller for the sampled-data decentralized adaptive control systems.

关键词： Lyapunov methods

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An Intelligent Robot based on Sound Source Localization and Ultrasound Distance Detection

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自动化技术与应用 2008年第11期27卷 22-28页

作者： Charlie Shucheng ZHU Mickey Zhen WANG Tina Wei ZHUO Linzhong ZHU Department of Electrical and Computer Engineering The Hong Kong University of Science and Technology HK Department of Computer Control System Shajiao B Power Station Ltd. Shenzhen 518102 China

In both industrial and research areas of electronic engineering,Sound Source Localization for robot control has always been an interesting subject to be further *** some dangerous situation,especially when a special driver is required to implement a particular task,the device should be able to combine robotics control technology with Sound Source Localization,and take actions according to the different response *** this research project,a multifunc-tional model driver,named "Mobile Island",has been designed and built up by integrating the Emulator 8051 micro-controller,Intel 8255 interfaces,some components and other necessary *** intelligent Mobile Island imple-mented by C language programs can operate under three control *** the sound control Mode 1,the model driver can detect and track a target by Sound Source Localization and then turn and move toward the *** the keypad control Mode 2,it can be controlled by a manual *** the free run Mode 3,Mobile Island can move and turn by *** finding an object in front,it will turn away before moving forward again,so that it can avoid crashing on the obstacle.

关键词：智能机器人声源定位方法超声检测距离

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An error-locating signature analyzer to identify faulty units in digital systems

An error-locating signature analyzer to identify faulty unit...

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Canadian Conference on Electrical and computer engineering (CCECE)

作者： Vadim Geurkov Vladimir Dynkin Reza Sedaghat Electrical and Computer Engineering Department Ryerson University Toronto Canada Department of System Identification Institute for Control Science Moscow Russia

In conventional signature analysis, faulty units are identified by mismatch between the actual and reference signatures. The amount of reference signatures can be quite large for a complex system that requires high testing resolution. This complicates the diagnosis procedure. We show how under certain restrictions this amount can be reduced, preserving the diagnosis resolution and the aliasing rate. We construct a signature analyzer that is capable of locating faulty units. If the analyzer is implemented in the external automated test equipment, its throughput requirements can be diminished.

关键词： Error analysis Fault diagnosis Digital systems Circuit faults system testing Hardware computer errors Error correction Redundancy Fault detection

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