检索结果-内蒙古大学图书馆

IEEJ Transactions on Electronics, information and Systems 2009年第2期129卷 308-313+17页

作者： Zhang, Xiu Wang, Xingyu Wang, Bei Sugi, Takenao Nakamura, Masatoshi Department of Automation East China University of Science and Technology 130 Meilong St. Shanghai 200237 China Department of Electrical and Electronic Engineering Faculty of Science and Engineering Saga University 1 Honjomachi Saga 840-8502 Japan Department of Advanced Systems Control Engineering Graduate School of Science and Engineering Saga University 1 Honjomachi Saga 840-8502 Japan

Surface electromyogram (EMG) from elbow, wrist and hand has been widely used as an input of multifunction prostheses for many years. However, for patients with high-level limb deficiencies, muscle activities in upper-limbs are not strong enough to be used as control signals. In this paper, EMG from lower-limbs is acquired and applied to drive a meal assistance robot. An onset detection method with adaptive threshold based on EMG power is proposed to recognize different muscle contractions. Predefined control commands are output by finite state machine (FSM), and applied to operate the robot. The performance of EMG control is compared with joystick control by both objective and subjective indices. The results show that FSM provides the user with an easy-performing control strategy, which successfully operates robots with complicated control commands by limited muscle motions. The high accuracy and comfortableness of the EMG-control meal assistance robot make it feasible for users with upper limbs motor disabilities. © 2009 The Institute of electrical Engineers of Japan.

关键词： Robots

来源：评论

学校读者我要写书评

暂无评论

Expert knowledge-based automatic sleep stage determination by multi-valued decision making method

IEEJ Transactions on Electronics, Information and Systems

引用

IEEJ Transactions on Electronics, information and Systems 2009年第4期129卷 614-619+6页

作者： Wang, Bei Sugi, Takenao Kawana, Fusae Wang, Xingyu Nakamura, Masatoshi Department of Advanced Systems Control Engineering Graduate School of Science and Engineering Saga University Honjomachi Saga 840-8502 Japan Department of Automation School of Information Science and Engineering East China University of Science and Technology 130 Meilong St. Shanghai 200237 China Department of Electrical and Electronic Engineering Faculty of Science and Engineering Saga University Honjomachi Saga 840-8502 Japan Department of Clinical Physiology Toranomon Hospital 2-2-2 Toranomon Minato-ku Tokyo 105-8407 Japan

In this study, an expert knowledge-based automatic sleep stage determination system working on a multivalued decision making method is developed. Visual inspection by a qualified clinician is adopted to obtain the expert knowledge database. The expert knowledge database consists of probability density functions of parameters for various sleep stages. Sleep stages are determined automatically according to the conditional probability. Totally, four subjects were participated. The automatic sleep stage determination results showed close agreements with the visual inspection on sleep stages of awake, REM (rapid eye movement), light sleep and deep sleep. The constructed expert knowledge database reflects the distributions of characteristic parameters which can be adaptive to variable sleep data in hospitals. The developed automatic determination technique based on expert knowledge of visual inspection can be an assistant tool enabling further inspection of sleep disorder cases for clinical practice. © 2009 The Institute of electrical Engineers of Japan.

关键词： Probability density function

来源：评论

学校读者我要写书评

暂无评论

Mathematica parallel computing. Some timing results on a intel nehalem multicore processor

Mathematica parallel computing. Some timing results on a int...

引用

10th International Symposium of Hungarian Researchers on Computational Intelligence and Informatics, CINTI 2009

作者： Paláncz, Béla Kovács, Levente Department of Photogrammetry and Geoinformatics Faculty of Civil Engineering Budapest University of Technology and Economics Muegyetem rkp. 3 1111 Budapest Hungary Department of Control Engineering and Information Technology Faculty of Electrical Engineering and Informatics Budapest University of Technology and Economics Magyar Tudósok krt. 2 H-1117 Budapest Hungary

1ome frequently employed algorithms in engineering, are parallel by nature (embarrasingly parallel algorithms) and some others can be parallelized via data parallelization. Algorithms like probability analysis, linear homotopy continuation method, Gauss-Jacobi combinatorial technique are belonging to the first group, while others like algorithms for digital image processing as well as reduced Groenber basis application to solving systems of polynomial equations fall into the other category. In this case study we illustrate how Mathematica can manage to evaluate such algorithms parallel on a multicore machine. The analysis of the efficiency of the computation and the net reduction of the execution time are presented by three examples as well as some useful tips are given to avoid pitfalls and utilize the advantages of parallel processing.

关键词： Monte Carlo methods

来源：评论

学校读者我要写书评

暂无评论

Anti-synchronization chaos shift keying method: Error derivative detection improvement

Anti-synchronization chaos shift keying method: Error deriva...

引用

作者： Čelikovský, Sergej Lynnyk, Volodymyr Institute of Information Theory and Automation Academy of Sciences of the Czech Republic P.O. Box 18 182 08 Prague 8 Czech Republic Department of Control Engineering Faculty of Electrical Engineering Czech Technical University Prague Czech Republic

ISBN: (纸本)9783902661654

This paper studies a new modification of the anti-synchronization chaos shift keying scheme for the secure encryption and decryption of data. A new concept of the detection of the correct/incorect binary value in the receiver is used. The method proposed here requires very reasonable amount of data to encrypt and time to decrypt a single bit. Basically, to encrypt a single bit, only one iteration is needed. Moreover, the security of this method is systematically investigated showing its good resistance to typical decryption attacks. Theoretical results are supported by the numerical simulations.

关键词： Synchronization

来源：评论

学校读者我要写书评

暂无评论

Redundancy method used in PLC related applications

Redundancy method used in PLC related applications

引用

International Workshop on Soft Computing Applications (SOFA)

作者： Gianina Gabor Doina Zmaranda Cornelia Gyorodi Sanda Dale Faculty of Electrical Engineering and Information Technology Department of Computer Science University of Oradea Oradea Romania Faculty of Electrical Engineering and Information Technology Department of Automation and Electrical Drives University of Oradea Oradea Romania

PLC related applications are more complex as far as more components are involved. If some error occurs, diagnosis can take some time, but a logical procedure will shorten the time needed to locate the fault. The probability of failure of different parts of typical PLC systems shows that 95% of PLC systems are external faults and occur on plant items such as: sensors, actuators, transducers, limit switchers, and others. The possibility of determining the validity of the data gathered from all transducers of the control system assures a way of short time fault detection. Consequently, a fault-tolerant control system must be implemented using redundant structures, representing an alternative for malfunctioning element detection. This paper presents a method used to design and implement a control system based on redundant structures. A case study for the geothermal power plant at the University of Oradea was developed. The redundant structure considered was simulated using MathLab/Simulink and analyzed using different scenarios. Finally, a possible implementation of resulting control system structure is done using a programmable logical controller (PLC).

关键词： Programmable control control systems Transducers Fault detection Redundancy Fault diagnosis Sensor systems Actuators Fault tolerant systems Design methodology

来源：评论

学校读者我要写书评

暂无评论

LPV model identification using blended linear models with given weightings

LPV model identification using blended linear models with gi...

引用

15th IFAC Symposium on System Identification, SYSID 2009

作者： Zhu, Yucai Ji, Guoli Control Systems Faculty of Electrical Engineering Eindhoven University of Technology PO BOX513 5600MB Eindhoven Netherlands Department of Automation Xiamen University Xiamen 361005 China Tai-Ji Control Grensheuvel 10 5685 AG Best Netherlands

ISBN: (纸本)9783902661470

Nonlinear process identification is studied. In model identification, a linear parameter varying (LPV) model is used and it consists of weighted local linear models. In this work, predetermined weighting functions are used and the LPV model identification becomes a linear identification problem with multiple weighted input data sets. So simplicity is its strength. The developed method is especially suitable for batch processes for which only transition tests are feasible and no working point tests are permitted. It is also suitable for continuous nonlinear process identification. Identifiability and stability of the LPV model are discussed. Simulation studies will be used to verify the effectiveness of the method. © 2009 IFAC.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Load forecasting scheme based on energy efficiency for planning the expansion of electrical systems

Load forecasting scheme based on energy efficiency for plann...

引用

2009 IEEE Bucharest PowerTech: Innovative Ideas Toward the electrical Grid of the Future

作者： Cerda Arias, J.L. Westermann, D. Department of Power System Faculty of Electrical Engineering and Information Technology Technology University of Ilmenau Gustav-Kirchhoff-St. 01 D-98693 Ilmenau Germany Technology University of Ilmenau Ilmenau Germany Institute of Electric Power and Control Technologies Ilmenau University of Technology Germany

ISBN: (纸本)9781424422357

A fundamental phase in the electrical systems planning is the temporal and spatial load forecasting. By changes in the structures of electricity markets and implementing policies for energy optimization, it is necessary to consider new variables that detail of better form the behaviorś forecasting and expansion of the electrical consumption to medium and long time. This work proposes a global load forecasting scheme to long-time, covering the topic temporal and spatial. The load forecasting proposes based in the influence of macroeconomic variables, implementing energy efficiency policies and the entry of new technologies that optimize their consumption. The proposed strategy combines load forecasting methods based on traditional methodologies with the implementation of the wavelets transformed and is validated through a sensitivity analysis for a real data set. Also, the model is applied to a real distribution system showing the potential for their use. © 2009 IEEE.

关键词： Energy efficiency

来源：评论

学校读者我要写书评

暂无评论

Review of prognostic problem in condition-based maintenance 10

Review of prognostic problem in condition-based maintenance

引用

2009 10th European control Conference, ECC 2009

作者： Dragomir, Otilia Elena Gouriveau, Rafael Dragomir, Florin Minca, Eugenia Zerhouni, Noureddine Valahia University of Târgoviste Electrical Engineering Faculty Automation and Information Department Unirii Avenue 18-20 Târgoviste Romania FEMTO-ST Institute CNRS - UFC Automatic Control and Micro-Mechatronic Systems Department 24 rue Alain Savary Besançon25000 France

ISBN: (纸本)9783952417393

Prognostic is nowadays recognized as a key feature in maintenance strategies as it should allow avoiding inopportune maintenance spending. Real prognostic systems are however scarce in industry. That can be explained from different aspects, on of them being the difficulty of choosing an efficient technology: many approaches to support the prognostic process exist, whose applicability is highly dependent on industrial constraints. Thus, the general purpose of the paper is to explore the way of performing failure prognostics so that manager can act consequently. Different aspects of prognostic are discussed. The prognostic process is (re)defined and an overview of prognostic metrics is given. Following that, the 'prognostic approaches' are described. The whole aims at giving an overview of the prognostic area, both from the academic and industrial points of views. © 2009 EUCA.

关键词： Condition based maintenance

来源：评论

学校读者我要写书评

暂无评论

Past and present of automatic glucose-insulin control research at BME

Past and present of automatic glucose-insulin control resear...

引用

10th International Symposium of Hungarian Researchers on Computational Intelligence and Informatics, CINTI 2009

作者： Kovács, Levente Benyó, Balázs Benyó, Zoltán Kovács, Adalbert Department of Control Engineering and Information Technology Faculty of Electrical Engineering and Informatics Budapest University of Technology and Economics Magyar Tudósok krt. 2 H-1117 Budapest Hungary Dept. of Mathematics University Politehnica of Timisoara P-ta Victoriei Nr. 2 RO-300006 Timişoara Romania

The paper reviews the research results in the field of automatic control of Type I diabetes mellitus obtained by the Biomedical engineering laboratory of the control engineering and Inforamtion technology department, Budapest University of technology and Economics (BME) in the last years. Beside the past, the present and the future ideas are also numbered.

关键词： Biomedical engineering

来源：评论

学校读者我要写书评

暂无评论

LMI based design for the Acrobot walking 9th

LMI based design for the Acrobot walking

引用

9th IFAC Symposium on Robot control, SYROCO 2009

作者： Anderle, Milan Čelikovský, Sergej Henrion, Didier Zikmund, Jirǎí Czech Technical University in Prague Faculty of Electrical Engineering Department of Control Engineering Technická 2 Prague166 27 Czech Republic Institute of Information Theory and Automation Academy of Sciences of the Czech Republic Pod vodárenskou věží 4 Prague182 08 Czech Republic LAAS-CNRS University of Toulouse 7 avenue du colonel Roche Toulouse31077 France

ISBN: (纸本)9781617825583

This paper aims to further improve previously developed design for Acrobot walking based on partial exact feedback linearization of order 3. Namely, such an exact system transformation leads to an almost linear system where error dynamics along trajectory to be tracked is a 4-dimensional linear time-varying system having 3 time-varying entries only, the remaining entries being either zero or one. In such a way, exponentially stable tracking can be obtained by quadratically stabilizing a linear system with polytopic uncertainty. The current improvement is based on applying LMI methods to solve this problem numerically. This careful analysis significantly improves previously known approaches. Numerical simulations of Acrobot walking based on the above mentioned LMI design are demonstrated as well.

关键词： Linear matrix inequalities

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：