检索结果-内蒙古大学图书馆

作者： Šamija, Hrvoje Marković, Ivan Petrović, Ivan TEB Elektronika d.o.o. Zagreb Croatia Faculty of Electrical Engineering and Computing Department of Computer and Control Engineering Zagreb Croatia

ISBN: (纸本)9789532330670

We consider the problem of optical flow analysis in an omnidirectional camera image, in order to segment out dynamic objects from ego-motion caused optical flow. The aim is to use the camera on a mobile robot, thus making it reasonable to assume knowledge of the camera movement in the horizontal plane. Estimation of the optical flow is performed in the omnidirectional image. By knowing the ego-motion, it is possible to calculate the resulting optical flow field with the necessary assumption of planarity of the surrounding scene (the mobile robot is in an open, flat space). However, comparing the calculated and estimated flow field, with the latter assumption by comparing the flow vectors or winding, did not result in satisfactory estimates. Therefore, we propose to geometrically map the optical flow vectors on a sphere, centered at the center of the central panoramic camera projection, since we observed the space angle to be invariant to the errors of the planar space assumption. In the experiments we show that the proposed approach is more robust than comparing the flows in the image plane. In addition, properties of the observed angle for the inverse problem of determining camera ego-motion are considered. © 2011 MIPRO.

关键词： Optical flows

来源：评论

学校读者我要写书评

暂无评论

Preface

Preface

引用

IEEE Workshop on Evolving and Adaptive Intelligent Systems (EAIS)

作者： Plamen Angelov Dimitar Filev Nik Kasabov José Antonio Iglesias Communication Systems Department InfoLab21 Lancaster University LA1 4WA UK Intelligent Control & Information Systems Ford Research & Advanced Engineering 2101 Village Road MD #1437 Dearborn MI 48121 USA Knowledge Engineering and Discovery Research Institute School of Computing and Informatics Sciences Auckland University of Technology 581 Great South Rd 1020 New Zealand Carlos III University of Madrid Avda. Universidad 30 28911 Leganés Spain

An important research challenge that needs to be address in the area of intelligent systems is the development of new, innovative and original methods, algorithms and implementations of systems with a high level of intelligent; that is, with a high level of flexibility and autonomy. This intelligence needs to be developed by understanding the environment in which these systems operate. However, these environments could be non-stationary, unpredictably changing and partially or completely unknown. For this reason, in order to develop an intelligent system - able to face with problems such as modeling, control, prediction, classification or data mining - in such environments, they need to be able to evolve, to self-develop, to self-organize, to self-evaluate and to self-improve. This is the cornerstone behind the Evolving and Adaptive Intelligent Systems.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Interacting multiple model nonlinear filter design for ultra-tightly coupled integrated navigation

Interacting multiple model nonlinear filter design for ultra...

引用

作者： Jwo, Dah-Jing Tseng, Chien-Hao Department of Communications Navigation and Control Engineering National Taiwan Ocean University Keelung Taiwan Department of Applied Scientific Computing Division National Center for High-Performance Computing Taichung Taiwan

ISBN: (纸本)9788995605646

In this paper, applications of the interacting multiple model (IMM) nonlinear filters to ultra-tightly coupled GPS/INS integrated navigation system. An ultra-tight GPS/INS architecture involves the integration of in-phase (I) and quadrature (Q) components from the correlator of a GPS receiver with the INS data. The error caused by linearization as in the extended Kalman filter (EKF) can be avoided using the unscented Kalman filter (UKF), which employs a set of sigma points by deterministic sampling, can efficiently deal with the nonlinear problem. The interacting multiple model (IMM) has the configuration that runs in parallel several model-matched state estimation filters, which exchange information (interact) at each sampling time. The use of IMM provides the appropriate value of process noise covariance so as to maintain good estimation accuracy and tracking capability. Performance assessment for EKF/UKF and IMMEKF/IMMUKF is carried out. The results show that the proposed IMMUKF algorithm demonstrates remarkable improvement in navigation estimation accuracy as compared to the conventional approaches. © 2011 Asian control Association.

关键词： Extended Kalman filters

来源：评论

学校读者我要写书评

暂无评论

Supercapacitors in power converter DC link: A short overview of design and application issues

Supercapacitors in power converter DC link: A short overview...

引用

作者： Čihak, E. E. Tihomir Jakopović, E. E. Željko KONAR - Electrical Engineering Institute Power Electronics and Control Department Zagreb Croatia Faculty of Electrical Engineering and Computing Department of Electric Machines Drives and Automation Zagreb Croatia

ISBN: (纸本)9789532330670

Very high values of efficiency in electric power conversion, electric energy saving requirements and power converter component optimization are priorities in design and construction of any type of modern power electronic converters. Moreover, if such power converters are connected to battery power source or other weak power source (as, for instance, fuel cells), additional design problems appear in sense of (battery) power source longevity, absorption of high peak power transients, provision of on-demand power bursts for load and other. EDLC, well known by their commercial name as Supercapacitors, are one of the possible solutions for aforementioned problems. © 2011 MIPRO.

关键词： Supercapacitor

来源：评论

学校读者我要写书评

暂无评论

Lyapunov functions for generalized discrete-time multivariable Popov criterion

Lyapunov functions for generalized discrete-time multivariab...

引用

作者： Ahmad, N. Syazreen Heath, W.P. Li, G. Control Systems Centre School of Electrical and Electronic Engineering University of Manchester Manchester M13 9PL United Kingdom School of Engineering Computing and Mathematics University of Exeter United Kingdom

ISBN: (纸本)9783902661937

This paper shows the existence of Lur'e-Postkinov Lyapunov functions for the generalized multivariable discrete-time Popov criterion. The nonlinearities in the Lur'e system considered here are monotonic, sector- and slope-restricted. We discuss the cases where the nonlinearities are diagonal and non-diagonal. Our derivation is based on the discrete-time Kalman-Yakubovich-Popov (KYP) lemma and the S-Procedure, and results in Linear Matrix Inequality (LMI) conditions which can be solved using convex optimization methods. © 2011 IFAC.

关键词： Lyapunov functions

来源：评论

学校读者我要写书评

暂无评论

Nutrient distribution within and release from the contaminated sediment of Haihe River

引用

Journal of Environmental Sciences 2011年第7期23卷 1086-1094页

作者： Min Wu Suiliang Huang Wei Wen Xueming Sun Xianqiang Tang Miklas Scholz Key Laboratory of Pollution Processes and Environmental Criteria of Ministry of Education Nankai University Tianjin 300457 China Numerical Simulation Group for Water Environment Tianjin Key Laboratory of Environmental Remediation and Pollution Control College of Environmental Science and Engineering Nankai University Tianjin 300071 China Civil Engineering Research Centre School of Computing Science and Engineering The University of Salford Newton Building Salford M5 4WT England United Kingdom

We assessed nutrient characteristics, distributions and fractions within the disturbed and undisturbed sediments at four sampling sites within the mainstream of Haihe River. The river sediments contained mostly sand （ 60%）. The fraction of clay was 3%. Total nitrogen （TN） and total phosphorus （TP） concentrations ranged from 729 to 1922 mg/kg and from 692 to 1388 mg/kg, respectively. Nutrient concentrations within the sediments usually decreased with increasing depth. The TN and TP concentrations within the fine sand were higher than for that within silt. Sediment phosphorus fractions were between 2.99% and 3.37% Ex-P （exchangeable phosphorus）, 7.89% and 13.71% Fe/Al-P （Fe, Al oxides bound phosphorus）, 61.32% and 70.14% Ca-P （calcium-bound phosphorus）, and 17.03% and 22.04% Org-P （organic phosphorus）. Nitrogen and phosphorus release from sediment could lead to the presence of 21.02 mg N/L and 3.10 mg P/L within the water column. A river restoration project should address the sediment nutrient stock.

关键词： total nitrogen and phosphorus calcium-bound phosphorus organic phosphorus undisturbed aquatic sediment disturbed aquatic sediment river restoration

来源：评论

学校读者我要写书评

暂无评论

Cloth animation based on particle model with constraint

Cloth animation based on particle model with constraint

引用

International Workshop on Digital Media and Digital Content Management, DMDCM 2011

作者： Min, Shi Tianlu, Mao School of Control and Computer Engineering North China Electric Power University Chinese Academy of Sciences Beijing China Institute of Computing Technology Chinese Academy of Sciences Beijing China

ISBN: (纸本)9780769544137

Physically-based methods are often used to simulate cloth animation. For generating realistic cloth animation, stability and effectiveness are two most important aspects which need to be considered. In cloth animation, the users often need to attach a vertex to make sure the vertex is free collision or reduce the excessive elongation of some edges. Some existing methods directly adjust the particle position or use stiff spring model for the simulation regarding these facts. However, these methods can cause energy loss or system performance degradation. In this paper, we propose a novel method to simulate cloth based on physically-model with constraints. Cloth deformation is solved using a physically-based model, and then constraints are iteratively imposed to avoid over-elongation and penetration. The experiments show that our method is stable and effective, and can generate realistic cloth animations. © 2011 IEEE.

关键词： Energy dissipation

来源：评论

学校读者我要写书评

暂无评论

Global robust output regulation for a class of multivariable systems and its application to a motor drive system

Global robust output regulation for a class of multivariable...

引用

作者： Ping, Zhaowu Huang, Jie Applied Control and Computing Laboratory Department of Mechanical and Automation Engineering Chinese University of Hong Kong Shatin N. T. Hong Kong

ISBN: (纸本)9781457700804

In this paper, we study the global robust output regulation problem for a class of multivariable nonlinear systems. The problem is first converted into a stabilization problem of an augmented system composed of the original plant and an internal model. The augmented system is a two-input system containing both dynamic uncertainty and time-varying static uncertainty. By decomposing the two-input control problem into two single-input control problems, we can solve the problem via a recursive approach utilizing the changing supply function technique. Finally, the theoretical result is applied to the speed tracking control and load torque disturbance rejection problem of a surface-mounted PM synchronous motor. © 2011 AACC American Automatic control Council.

关键词： Disturbance rejection

来源：评论

学校读者我要写书评

暂无评论

Current Status and Future Perspective of Waste Printed Circuit Boards Recycling

引用

Procedia Environmental Sciences 2012年 16卷 590-597页

作者： Xianlai Zeng Lixia Zheng Henghua Xie Bin Lu Kai Xia Kuoming Chao Weidong Li Jianxin Yang Szuyin Lin Jinhui Li State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing 10084 China Dongjiang Environmental Company Limited Shenzhen 518057 China Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China State Key Laboratory of Digital Manufacturing Equipment and Technology Huazhong University of Science and Technology Wuhan 430074 Hubei China Faculty of Engineering and Computing Coventry University Coventry CV1 5FB UK Institute of Information Management National Chiao Tung University Hsinchu 300 Taiwan

For waste electrical and electronic equipment (WEEE), large quantities of waste printed circuit boards (PCBs) are released into environment. In light of their characteristics including complex structures, high metals content and potential hazards, waste PCBs are regarded as the most difficult parts of WEEE to be recycled. Therefore in recent ten years, the issue has attracted much attention from researchers and enterprises. This article reviews the latest processes of waste PCBs developed from laboratories to pilot engineering applications, and presents the most suitable available technology for waste PCBs, typically categorized as manually dismantling and automatic approaches in developing and developed countries, respectively. Towards achieving the better sustainability and recyclability for waste PCBs, nonmetal powder and precious metals should be developed for a deep recovery following mechanical treatment. Additionally, a significant shift is emerging from dismantling for recycling of printed wiring boards, to disassembling for remanufacturing of electronic components, which will indicate that a new paradigm of reclaiming waste PCBs is shaping.

关键词： Printed circuit boards (PCBs) Waste electrical and electronic equipment (WEEE) Recycling Best available technology trends

来源：评论

学校读者我要写书评

暂无评论

Assimilation of Wireless Sensor Networks and remote microcomputer laboratories

Assimilation of Wireless Sensor Networks and remote microcom...

引用

作者： Fudurić, Darko Cmuk, Drago Knežević, Petar Mrvoš, Saša Department of Control and Computer Engineering University of Zagreb Faculty of Electrical Engineering and Computing Unska 3 Zagreb Croatia Konar - Electronics and Informatics Inc. Fallerovo etalite 22 Zagreb Croatia Department of Fundamentals of Electrical Engineering and Measurements University of Zagreb Faculty of Electrical Engineering and Computing Unska 3 Zagreb Croatia Department of Electronic Systems and Information Processing University of Zagreb Faculty of Electrical Engineering and Computing Unska 3 Zagreb Croatia

ISBN: (纸本)9789532330670

Emergence of Web 2.0 technologies became a trigger for a revolution that goes far beyond the Web. For an average student Web was transformed from a steady, accessible source of information into a place of action and viable exchange of knowledge a kind of a virtual classroom. Students started to look for experience and a touch to reality online, and this is where remote laboratories come in place. Such laboratories became an inevitable need in electrical and computer engineering courses dealing with microcomputers. This paper presents an overview of available architectures of microcomputer laboratories used today and addresses their most important limitations. Moreover, an important extension of such architecture is proposed allowing support for remote Wireless Sensor Network (WSN) laboratory. Different aspects of compatibility between microcomputer laboratories and WSNs have been examined to allow creation of an general extension model. With additional effort and adaptation, WSN nodes may serve remote clients as an economic and accessible microcomputer laboratory providing invaluable hands-on experience and a motivation for a course using it. © 2011 MIPRO.

关键词： Embedded systems

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：