检索结果-内蒙古大学图书馆

Enhancement of lost ore production efficiency by usage of canopies

Metallurgical and Mining Industry 2015年第4期7卷 325-329页

作者： Golik, Vladimir Komashchenko, Vitaly Morkun, Vladimir Zaalishvili, Vladislav Geophysical institute of the Vladikavkaz Russian Academy of Sciences Vladikavkaz Russia Belgorod State National Research University Belgorod Russia Computer Science Automation and Control Systems department State Higher Educational Institution Kryvyi Rih National University Ukraine Geophysical institute Vladikavkaz scientific center RAS Russia

Characteristic of the problem of lost ore production is given. The results of usage of metal-cable, wood-cable and cable-stayed load-bearing and transecting canopies in ore mine practice are given. Parameters of construction of continuous load-bearing ferroconcrete ceiling are presented in details. The conclusion that lost ore production increases raw material base and restores the health of the economy of mining enterprises is made. © Metallurgical and Mining Industry, 2015.

关键词： Ores

来源：评论

学校读者我要写书评

暂无评论

Interval type-2 fuzzy-model-based control design for time-delay systems under imperfect premise matching

Interval type-2 fuzzy-model-based control design for time-de...

引用

IEEE International Conference on Fuzzy systems (FUZZ-IEEE)

作者： Yuandi Li H. K. Lam Lixian Zhang Hongyi Li Fucai Liu Shun-Hung Tsai Department of Informatics King's College London United Kingdom Institute of Electrical Engineering Yanshan University Qinhuangdao China Research Center of Intelligent Control and Systems Harbin Institute of Technology Harbin China College of Engineering Bohai University Jinzhou China Graduate Institute of Automation Technology National Taipei University of Technology Taipei Taiwan

In this paper, the problems of stabilization for interval type-2 fuzzy systems with time-varying delay and parameter uncertainties are investigated. The objective is to design an interval type-2 fuzzy controller such that the closed-loop control system is asymptotically stable. The conditions for the existence of such a controller are delay dependent and membership function dependent in terms of linear matrix inequalities (LMIs). Based on a basic lemma, we formulate and solve the problem with more flexibility due to imperfect premise matching that the number of rules and premise membership functions are not necessary the same between the interval type-2 fuzzy model and interval type-2 fuzzy controller. A systematic approach making use of the information embedded in the lower and upper membership functions is employed to facilitate the stability analysis. A numerical example indicates the effectiveness of the derived results.

关键词： Gold

来源：评论

学校读者我要写书评

暂无评论

The Chinese ‘‘HumanFlesh’’ Web:the first decade and beyond

引用

Chinese Science Bulletin 2014年第26期59卷 3352-3361页

作者： Fei-Yue Wang Daniel Zeng Qingpeng Zhang James A. Hendler Jianping Cao The State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Department of Management Information Systems The University of Arizona Tucson Department of Systems Engineering and Engineering Management City University of Hong Kong Tetherless World Constellation Department of Computer Science Rensselaer Polytechnic Institute Troy The Research Center for Computational Experiments and Parallel Systems National University of Defense Technology

Human flesh search(HFS), a Web-enabled crowdsourcing phenomenon, originated in China a decade ago. In this article, we present the first comprehensive empirical analysis of HFS, focusing on the scope of HFS activities, the patterns of HFS crowd collaboration process, and the characteristics of HFS participant networks. A survey of HFS participants was conducted to provide an in-depth understanding of the HFS community and various factors that motivate these participants to contribute. This article also advocates a new stream of Web science and social computing research that will be important in predicting the future growth and use of the World Wide Web.

关键词：中国人网址肉 Web功能实证分析参与者共同体万维网

来源：评论

学校读者我要写书评

暂无评论

Coordination control for generic linear multi-agent systems with time delay: a semi-discretization approach

Coordination control for generic linear multi-agent systems ...

引用

IEEE Annual Conference on Decision and control

作者： Jiahu Qin Jie Sheng Huijun Gao Wei Xing Zheng Department of Automation University of Science and Technology of China Hefei 230027 P. R. China Research Institute of Intelligent Control and Systems Harbin Institute of Technology Harbin 150001 P. R. China School of Computing Engineering and Mathematics Western Sydney University Sydney NSW 2751 Australia

ISBN: (纸本)9781479978878

This paper aims to perform the convergence analysis for a group of linear multi-agent systems with time delay and communicating over arbitrary network topology. It is proved that within the allowable delay bound, all the agents within each closed strong component reach synchronization, while all the other agents outside the closed strong components converge to the dynamic convex hull spanned by the agents in the closed strong components. The delay bound is calculated by the method of semi-discretization, which is also useful in searching for an optimal feedback control with the fastest convergence rate for a certain time delay. A simulation example is given to illustrate the validity of the obtained results.

关键词： coordinated control Network topology Agents system clock optimal feedback control Converge convex hull COMMUNICATING

来源：评论

学校读者我要写书评

暂无评论

Distributed parameter modeling of single-mast stacker crane structures

引用

Periodica Polytechnica Transportation Engineering 2014年第1期42卷 1-9页

作者： Hajdu, Sándor Gáspár, Péter Department of Mechanical Engineering University of Debrecen Ótemeto u. 2-4. H-4028 Debrecen Hungary Systems and Control Laboratory Computer and Automation Research Institute Hungarian Academy of Sciences Kende u. 13-17 H-1111 Budapest Hungary

This paper presents distributed parameter dynamical modeling capabilities of single-mast stacker crane structures. In the frame structure of stacker cranes due to external excitation or inertial forces undesirable structural vibrations may arise. These vibrations reduce the stability and positioning accuracy of stacker crane and causes increasing cycle time of storage/ retrieval operation. Thus it is necessary to investigate of these vibrations. In this paper the dynamical behavior of single-mast stacker cranes is approximated by means of distributed parameter models. The first model is a cantilever beam model with uniform material and cross-sectional properties. This model is used to demonstrate fundamental properties of Euler-Bernoulli beam models. The second model is cantilever beam model with variable cross-sectional properties and lumped masses. The eigenfrequencies and mode shapes of this mast-model are determined by means transfer matrix method. In the third model the whole structure of single-mast stacker crane is modeled. Beside the eigenfrequencies and mode shapes of this model the Bodediagrams of frequency response function is also calculated.

关键词： Cantilever beams

来源：评论

学校读者我要写书评

暂无评论

Synchronising second-order multi-agent systems under dynamic topology via reference model-based algorithm

引用

Journal of control and Decision 2014年第3期1卷 214-225页

作者： Jiahu Qin Huijun Gao Tasawar Hayat Fuad E.Alsaadi Department of Automation University of Science and Technology of ChinaHefeiChina Research School of Engineering Australian National UniversityCanberraAustralia Research Institute of Intelligent Control and Systems Harbin Institute of TechnologyHarbinChina Nonlinear Analysis and Applied Mathematics Group King Abdulaziz University(KAU)JeddahSaudi Arabia Faculty of Engineering Department of Electrical and Computer EngineeringKing Abdulaziz UniversityJeddahSaudi Arabia Department of Mathematics Quaid-I-Azam UniversityIslamabadPakistan

This paper revisits the synchronisation problem for second-order multi-agent systems(MASs)under dynamically changing communication *** employing the reference model-based synchronisation algorithm,it is finally shown that synchronisation for both the position and velocity states can be achieved if the union of the communication topologies has a directed spanning tree frequently *** extends the existing results obtained for second-order MASs which exploits mild communication topology condition guaranteeing the synchronisation to a more general *** analysis is successfully performed by exploiting the product properties of row-stochastic matrices,which can also provide us with an estimate the convergence rate towards the synchronisation.

关键词： synchronisation double-integrator agents weakest possible communication topology rate of convergence

来源：评论

学校读者我要写书评

暂无评论

Networked systems with incomplete information

Abstract and Applied Analysis

引用

Abstract and Applied Analysis 2015年第1期2015卷

作者： Wang, Zidong Shen, Bo Dong, Hongli He, Xiao Hu, Jun Department of Computer Science Brunel University London Uxbridge Middlesex UB8 3PH United Kingdom School of Information Science and Technology Donghua University Shanghai 200051 China College of Electrical and Information Engineering Northeast Petroleum University Daqing 163318 China Research Institute of Intelligent Control and Systems Harbin Institute of Technology Harbin 150001 China Department of Automation Tsinghua University Beijing 100084 China Department of Applied Mathematics Harbin University of Science and Technology Harbin 150080 China

来源：评论

学校读者我要写书评

暂无评论

Identification of linear parameter varying systems with missing output data using generalized expectation-maximization algorithm 19

Identification of linear parameter varying systems with miss...

引用

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

作者： Yang, X. Xiong, W. Huang, B. Gao, H. Research Institute of Intelligent Control and Systems Harbin Institute of Technology Harbin Heilongjiang150080 China Jiangnan University Wuxi Jiangsu214122 China Department of Chemical and Materials Engineering University of Alberta EdmontonABT6G 2G6 Canada Research Institute of Mechatronics and Automation Bohai University Jinzhou121013 China

ISBN: (纸本)9783902823625

This paper is concerned with the identification problems of linear parameter varying (LPV) systems with randomly missing output data. Since one local linearized model cannot capture the global dynamics of the nonlinear industrial process, the multiple-model LPV model in which the global model is constructed by smoothly weighted combination of multiple local models is considered here. The problem of missing output variables data is commonly encountered in practice. In order to handle the multiple-model identification problems of LPV systems with incomplete data, the local model is taken to have a finite impulse response (FIR) model structure and the generalized expectation-maximization (EM) algorithm is adopted to estimate the unknown parameters of the global LPV model. To avoid the problems of ill-conditioned matrices and high sensitivity of parameters to noise, the prior information on the coefficients of each local FIR model is employed to construct the prior probability of unknown parameters. Then the maximum a posteriori (MAP) estimates of the global model parameters are derived via the generalized EM algorithm. The numerical example is presented to demonstrate the effectiveness of the proposed method. © IFAC.

关键词： Parameter estimation

来源：评论

学校读者我要写书评

暂无评论

Design of an educational emulation framework for mechatronics control unit development

Design of an educational emulation framework for mechatronic...

引用

IEEE/ASME International Conference on Mechtronic and Embedded systems and Applications, MESA

作者： Tamás Bécsi Szilárd Aradi Péter Gáspár Department of Control for Transportation and Vehicle Systems Budapest University of Technology and Economics Budapest Hungary Systems and Control Laboratory Computer and Automation Research Institute Hungarian Academy of Sciences Budapest Hungary

Teaching mechatronics is a great challenge since the subject is a multidisciplinary area of electrical, mechanical and IT knowledge. Students must deepen their knowledge in these slightly related fields of engineering. Tasks and solving problems in mechatronics require cognitive and operational knowledge and practical experience about systems design and analysis. Since mechatronics engineering is a fast-developing and practice-oriented field placing more emphasis practical and project-based education at universities is strongly encouraged by the industry. The paper presents an educational framework designed for students with a specialization in vehicle mechatronics. The aim of the system is to provide the emulation of a real vehicle module, which must be operated by appropriately designed controller unit.

关键词： Mechatronics Vehicles Emulation Educational institutions Sensors Software

来源：评论

学校读者我要写书评

暂无评论

Editorial: Sliding-Mode Based Disturbance Estimation, Attenuation and Fault Detection

引用

IET control Theory & Applications 2015年第4期9卷 511-514页

作者： PROF. Leonid Fridman PROF. Shihua Li PROF. Arie Levant PROF. Xinkai Chen PROF. Xinhguo Yu Guest Editors Departamento de Ingeniera de Control y Robótica División de Ingeniera Eléctrica Facultad de Ingeníera UNAM Ciudad Universitaria D.F. 04510 México School of Automation Southeast University Si Pai Lou 2 Nanjing 210096 China Applied Mathematics Dept. School of Mathematical Sciences Tel-Aviv University Ramat-Aviv. Tel-Aviv 69978 Israel Department of Electronic and Information Systems Shibaura Institute of Technology Saitama-shi Saitama 337-8570 Japan Platform Technologies Research Institute RMIT University Melbourne VIC 3001 Australia

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：