检索结果-内蒙古大学图书馆

IEEE Annual Conference on Decision and control

作者： Wentao Chen Junzheng Wang Ling Shi Dawei Shi State Key Laboratory of Intelligent Control and Decision of Complex Systems School of Automation Beijing Institute of Technology Beijing 100081 P.R. China Department of Electronic and Computer Engineering Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong

ISBN: (纸本)9781479978878

We consider the event-triggered state estimation of a finite-state hidden Markov model with a general stochastic event-triggering condition. Utilizing the change of probability measure approach and the event-triggered measurement information available to the estimator, analytical expressions for the conditional probability distributions of the states are obtained, based on which the minimum mean square error event-based state estimates are further calculated. We show that the results also cover the case of packet dropout, under a special parameterization of the event-triggering conditions. With the results on state estimation, a closed-form expression of the average sensor-to-estimator communication rate is also presented. The effectiveness of the proposed results is illustrated by a numerical example and comparative simulations.

关键词： State estimation Hidden Markov models Event trigger Probability distribution Mean square error numerical example

来源：评论

学校读者我要写书评

暂无评论

Tumor Cell Detection Device Based on Surface Plasmon Resonance Imaging and Image Processing

引用

Chemical Research in Chinese Universities 2014年第2期30卷 211-215页

作者： YANG Mengchao JIN Xinyu YUAN Maokai LIU Fan LANG Yicong WU Zhongyu XIANG Liancheng ZHOU Chao OUYANG Bo JIN Wei MU Ying Research Center for Analytical Instrumentation Institute of Cyber-systems and Control State Key Laboratory of Industrial Control Technology Zhejiang University Hangzhou 310058 P.R.China Department of Information Science & Electronic Engineering Zhejiang UniversityHangzhou 310027 P.R.China

A laboratory-made tumor cell detection device was fabricated based on both surface plasmon resonance imaging（SPRi） and image *** this device,a gravity-induced flow injection chip（gFIC） was exploited to replace a *** two charge coupled devices（CCDs） were used to detect HepG2 cells by SPRi and image processing,*** results of two CCDs are *** A was used to modify the sensing *** inlet angle was carefully adjusted for the device to get an enhanced *** the test,the contrast among cell solutions at different concentrations can be easily *** other CCD using image processing can tell false-positive in some *** detection is label-free,real time,and precise.

关键词： Surface plasmon resonance Image processing Tumor detection Gravity induced

来源：评论

学校读者我要写书评

暂无评论

Integrally Accurate Resolver-to-Digital Converter (RDC)

Integrally Accurate Resolver-to-Digital Converter (RDC)

引用

Asian control Conference

作者： Nordinah Ismail Fuminori Kobayashi Manabu Inoue Department of Electronic Systems Engineering Malaysia-Japan International Institute of Technology Universiti Teknologi Malaysia Dept. of Electronic Control Engineering Yonago College of Technology of Japan

ISBN: (纸本)9781479978632

In a resolver signal processing system, sine and cosine signals processed by the resolver-to-digital converter (RDC) obtained from a resolver is looped back as the resolver's sine wave excitation signal as to ensure that the signal is in-phase and frequency with generated output signals. Regenerating constant-amplitude sine wave is a challenge since output signal amplitude grows and decays over time based on its initial signal In this work, an approach is proposed to digitally generate sinusoidal signal based on a state machine. Progression of states in a state machine that is fixed enables maintaining constant amplitude signal. Implementation using Altera FPGA Cyclone II (EP2C8Q208C8) shows sinusoidal signal is produced with less hardware resources for higher angle and data resolution compared to the popular method of ROM-based lookup table.

关键词： Resolver Resolver digital converter (RDC) Quadrature oscillator State machine FPGA

来源：评论

学校读者我要写书评

暂无评论

Optimizing safety supervisors for wind turbines using barrier certificates 19

Optimizing safety supervisors for wind turbines using barrie...

引用

19th IFAC World Congress on International Federation of Automatic control, IFAC 2014

作者： Laurijsse, M. Wisniewski, R. Weiland, S. Department of Electrical Engineering Eindhoven University of Technology Eindhoven Netherlands Section for Automation and Control Aalborg University Aalborg East9220 Denmark Control Systems Group Eindhoven University of Technology Eindhoven Netherlands

ISBN: (纸本)9783902823625

To avoid structural damage, a wind turbine is equipped with a safety supervisor that triggers an emergency shutdown procedure in case of internal faults or large wind gusts. This paper leverages the (compositional) barrier certificate framework for the design and optimization of such a supervisor. The problem is formulated as a sum of squares problem and is solved using semi-definite programming. Both a direct and compositional approach are successfully implemented and verified for the NREL 5MW reference turbine. In conclusion, the methods derived in this paper are indeed viable for the syntheses and optimization of safety systems for future wind turbines. © IFAC.

关键词： Wind turbines

来源：评论

学校读者我要写书评

暂无评论

Moment Matching Based Model Reduction for LPV State-Space Models

Moment Matching Based Model Reduction for LPV State-Space Mo...

引用

IEEE Annual Conference on Decision and control

作者： Mert Bastug Mihaly Petreczky Roland Toth Rafael Wisniewski John Leth Denis Efimov Department of Electronic Systems Automation and Control Aalborg University 9220 Aalborg Denmark Department of Computer Science and Automatic Control (UR Informatique et Automatique) Ecole des Mines de Douai 59508 Douai France Department of Electrical Engineering Control Systems Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands Non-A INRIA Lille - Nord Europe Parc Scientifique de la Haute Borne 40 avenue Halley Bat. A Park Plaza 59650 Villeneuve d'Ascq France

ISBN: (纸本)9781479978878

We present a novel algorithm for reducing the state dimension, i.e., order, of linear parameter varying (LPV) discrete-time state-space (SS) models with affine dependence on the scheduling variable. The input-output behavior of the reduced order model approximates that of the original model. In fact, for input and scheduling sequences of a certain length, the input-output behaviors of the reduced and original model coincide. The proposed method can also be interpreted as a reachability and observability reduction (minimization) procedure for LPV-SS representations with affine dependence.

关键词： Reduced order model original model INPUT-OUTPUT Affine In-law Accessibility Moment of force

来源：评论

学校读者我要写书评

暂无评论

Sophistication of mpd traffic control system 21

Sophistication of mpd traffic control system

引用

21st World Congress on Intelligent Transport systems: Reinventing Transportation in Our Connected World, ITSWC 2014

作者： Seki, Tatsuya Noda, Motoyoshi Sakakibara, Hajime Masuda, Kazunori Traffic Facilities and Control Division Traffic Bureau Tokyo Metropolitan Police Department 2-1-1 Kasumigaseki Chiyoda-ku Tokyo100-8929 Japan Traffic Systems Division 2nd Systems Development Department Tokyo Traffic Engineering Section 1-43-5 Sekiguchi Bunkyo-ku Tokyo112-0014 Japan

The traffic control System of the Tokyo Metropolitan Police department (hereinafter, "MPD") evolved from the traffic Information Center which was opened in 1961 for the purpose of reducing traffic congestion and the number of accidents that had been building up. Initially, congestion status was monitored through reports from policemen at the scene over the phone, but with the SATIC system (a system for reporting traffic congestion states) installed at approximately 220 key intersections in the Metropolitan Tokyo Area in 1963 paved the way for machine-based information gathering to replace manual monitoring. In 1966, a traffic signal control system which optimizes traffic signal control based on information from vehicle detectors was given a trial run. Following its success, a traffic control center which is the precursor of the current traffic control Center started its operation to provide road traffic information and to control traffic signals automatically. In this paper, the authors will outline the history of the traffic control Center in stages and report the efforts made in sophisticating the technique of demand prediction traffic signal control and the adaptive offset and sub-area control technique as part of the traffic signal control function.

关键词： traffic congestion

来源：评论

学校读者我要写书评

暂无评论

Robust static output-feedback control for uncertain linear discrete-time systems via the generalized KYP Lemma 19

Robust static output-feedback control for uncertain linear d...

引用

19th IFAC World Congress on International Federation of Automatic control, IFAC 2014

作者： Li, Xianwei Yin, Shen Gao, Huijun Kaynak, Okyay Research Institute of Intelligent Control and Systems Harbin Institute of Technology Harbin150080 China Department of Electrical and Electronic Engineering Bogazici University Istanbul34470 Turkey

ISBN: (纸本)9783902823625

This paper is concerned with robust static output-feedback (SOF) control for linear discrete-time systems subject to polytopic uncertainty and restricted frequency-domain specifications (RFDSs) via the generalized Kalman-Yakubovich-Popov (KYP) lemma. Polytopic uncertainties are assumed to enter all the system matrices, while RFDSs are motivated by the fact that practical design specifications are often described in restricted finite frequency ranges. Dilated multipliers are first introduced to relax the GKYP lemma for SOF controller synthesis and robust performance analysis. Then a two-stage approach to SOF controller synthesis is proposed: at the first stage, a robust full-information (FI) controller is designed, which is used to construct a required SOF controller at the second stage. To improve the solvability of the synthesis method, an iterative algorithm is further formulated for exploring the SOF gain. The effectiveness of the proposed design method is finally demonstrated by a numerical example. © IFAC.

关键词： Discrete time control systems

来源：评论

学校读者我要写书评

暂无评论

Model-based predictive control scheme for cost optimization and balancing services for supermarket refrigeration systems 19

Model-based predictive control scheme for cost optimization ...

引用

19th IFAC World Congress on International Federation of Automatic control, IFAC 2014

作者： Weerts, H.H.M. Shafiei, S.E. Stoustrup, J. Izadi-Zamanabadi, R. Department of Electrical Engineering Eindhoven University of Technology Eindhoven Netherlands Automation and Control Department of Electronic Systems Aalborg University Aalborg Denmark Danfoss A/S Nordborg6430 Denmark

ISBN: (纸本)9783902823625

A formulation of model predictive control for supermarket refrigeration systems is proposed to facilitate the regulatory power services as well as energy cost optimization of such systems in the smart grid. Nonlinear dynamics existing in large-scale refrigeration plants challenges the predictive control design. It is however shown that taking into account the knowledge of different time scales in the dynamical subsystems makes possible a linear formulation of a centralized predictive controller. A realistic scenario of regulatory power services in the smart grid is considered and formulated in the same objective as of a cost optimization one. A simulation benchmark validated against real data and including significant dynamics of the system is employed to show the effectiveness of the proposed control scheme. © IFAC.

关键词： Electric power system control

来源：评论

学校读者我要写书评

暂无评论

Optimised sensor selection for control and fault tolerance of electromagnetic suspension systems: A robust loop shaping approach

Optimised sensor selection for control and fault tolerance o...

引用

作者： Michail, Konstantinos Zolotas, Argyrios C. Goodall, Roger M. Department of Mechanical Engineering and Materials Science and Engineering Cyprus University of Technology Limassol Cyprus School of Engineering and Informatics University of Sussex United Kingdom Control Systems Group School of Electronic Electrical and Systems Engineering Loughborough University United Kingdom

This paper presents a systematic design framework for selecting the sensors in an optimised manner, simultaneously satisfying a set of given complex system control requirements, i.e. optimum and robust performance as well as fault tolerant control for high integrity systems. It is worth noting that optimum sensor selection in control system design is often a non-trivial task. Among all candidate sensor sets, the algorithm explores and separately optimises system performance with all the feasible sensor sets in order to identify fallback options under single or multiple sensor faults. The proposed approach combines modern robust control design, fault tolerant control, multiobjective optimisation and Monte Carlo techniques. Without loss of generality, it's efficacy is tested on an electromagnetic suspension system via appropriate realistic simulations. © 2013 ISA.

关键词： Multiobjective optimization

来源：评论

学校读者我要写书评

暂无评论

Depth map driven hole filling algorithm exploiting temporal correlation information

引用

IEEE Transactions on Broadcasting 2014年第2期60卷 394-404页

作者： Yao, Chao Tillo, Tammam Zhao, Yao Xiao, Jimin Bai, Huihui Lin, Chunyu Institute of Information Science Beijing Jiaotong University Beijing China Beijing Key Laboratory of Advanced Information Science and Network Technology Beijing China State Key Laboratory of Rail Traffic Control and Safety Beijing 100044 China Department of Electrical and Electronic Engineering Xi'an Jiaotong-Liverpool University Suzhou 215123 China

The depth-image-based-rendering is a key technique to realize free viewpoint television. However, one critical problem in these systems is filling the disocclusion due to the 3-D warping process. This paper exploits the temporal correlation of texture and depth information to generate a background reference image. This is then used to fill the holes associated with the dynamic parts of the scene, whereas for static parts the traditional inpainting method is used. To generate the background reference image, the Gaussian mixture model is employed on the texture information, whereas, depth maps information are used to detect moving objects so as to enhance the background reference image. The proposed holes filling approach is particularly useful for the single-view-plus-depth format, where, contrary to the multi-view-plus-depth format, only information of one view could be used for this task. The experimental results show that objective and subjective gains can be achieved, and the gain ranges from 1 to 3 dB over the inpainting method. © 1963-12012 IEEE.

关键词： Filling

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：