检索结果-内蒙古大学图书馆

IEEE Conference on Decision and Control

作者： Donato Di Paola Andrea Gasparri David Naso Frank L. Lewis Faculty of Engineering Computer Science and Automation Department University Roma Tre Rome Italy Department of Electrical and Electronic Engineering (DEE) Polytechnic of Bari Bari Italy Automation and Robotics Research Institute University of Texas Arlington Fort Worth TX USA

ISBN: (纸本)9781467320658

This paper describes a decentralized approach to control the execution of a set of tasks for a network of heterogeneous robotic agents, i.e., agents with different sets of sensors and actuators. The proposed approach is based on a discrete-event modeling and control framework. The novelty is the full decoupling between the tasks modeling and their deployment. This implies an higher robustness to faults in the network of agents and a more systematic way for the task modeling regardless of the actual capability of the agents. A consensus-based mechanism is exploited in the control system to achieve coherence among the agents state and synchronize the agents action.

关键词： Vectors Control systems Robot kinematics Robot sensing systems Synchronization Indexes

来源：评论

学校读者我要写书评

暂无评论

FPGA based parallel connection system of separate voltage sources

FPGA based parallel connection system of separate voltage so...

引用

International Conference on Renewable Energy Research and Applications (ICRERA)

作者： Erdal Irmak İlhami çolak Halil İbrahim Bülbül Naki Güler Ayberk Calpbinici Electrical and Computer Engineering Department Faculty of Technology Gazi University Ankara Turkey Department of Computer Education Faculty of Industrial Arts Education Gazi University Ankara Turkey Electronics and Automation Department Gazi Vocational School Gazi University Ankara Turkey

In this study, parallel connection of separate voltage sources has been realized using cuk converters. For this aim, output voltages of converters are measured continuously and then fixed to a reference value. The PWM signals which are required to control the converters and to sense the current and voltage signals are generated by an FPGA. Since the FPGA has parallel processing feature, voltage and current data of the system are measured at the same time. Thus, the converters are connected in parallel punctually and load sharing between them are provided in order to eliminate some undesired cases like unbalanced loading. In the system realized, two identical cuk converters are used. As cuk converters can operate both in buck and boost modes, output voltages are fixed to the reference voltage successfully, even though input voltages are low or high. Experimental results show that the system achieved operates with a reasonable efficiency ranging from 81% to 88%.

关键词： Voltage measurement Field programmable gate arrays Educational institutions Voltage control Renewable energy resources Switches Solar energy

来源：评论

学校读者我要写书评

暂无评论

An introduction to the special issue on time delay systems: Modelling, identification, stability, control and applications

引用

WSEAS Transactions on Systems 2012年第10期11卷 539-540页

作者： Pekař, Libor Neri, Filippo Department of Automation and Control Engineering Faculty of Applied Informatics Tomas Bata University in Zlín Zlín Czech Republic Department of Computer Science University of Naples Federico II Naples Italy

来源：评论

学校读者我要写书评

暂无评论

Experimental Results for Image-based Geometrical Reconstruction for Spacecraft Rendezvous Navigation with Unknown and Uncooperative Target Spacecraft

Experimental Results for Image-based Geometrical Reconstruct...

引用

IEEE/RSJ International Conference on Intelligent Robotics and Systems

作者： Frank Schnitzer Klaus Janschek Georg Willich Technische Universit?t Dresden Faculty of Electrical and Computer Engineering Institute of Automation 01062 Dresden Germany Astrium GmbH Future Programs & Instruments 88090 Immenstaad Germany

ISBN: (纸本)9781467317375

For both manned and autonomous space on-orbit servicing missions, the collision avoidance and motion prediction of the target objects are essential for a safe mission operation. Our approach assumes unknown and uncooperative target objects (spacecraft, space debris) and a camera only vision system. The target's 3D structure is reconstructed from a sparse point cloud extracted from a rendezvous-SLAM algorithm and processed by a RANSAC algorithm. Afterwards the 3D model can be used in a feedback manner for enhancing visual navigation processing tasks. The paper details the general concept and presents experimental results with camera image data from a spacecraft rendezvous simulator testbed.

关键词： Space Robotics On-Orbit Servicing Rendezvous Autonomous Navigation Reconstruction RANSAC Sparse Point Cloud

来源：评论

学校读者我要写书评

暂无评论

Fault tolerant adaptive estimation of nonlinear processes using redundant measurements

Fault tolerant adaptive estimation of nonlinear processes us...

引用

Mediterranean Conference on Control and automation (MED)

作者： M. Miranda A. Edelmayer Laboratory of Unit Operations Department of Chemical Engineering Faculty of Engineering University of Los Andes Merida Venezuela Systems and Control Laboratory Computer and Automation Research Institute Hungarian Academy of Sciences (ATOMKI) Budapest Hungary

This paper presents a dual layer approach for robust fault tolerant estimation of nonlinear processes using a combined adaptive extended Kalman filter and fault detection and filter reconfiguration. From the one hand, the filter is made robust in face of environment uncertainty using adaptive filtering. To this end, the filter identifies the measurement covariance by means of recursive estimation, upon which the adaptation relies, to suppress the effect of sporadic variations in the quality of measurements as well as compensates for incipient sensor faults. From the other hand, fault monitoring is continuously applied to the filter's innovation in an attempt to initiate filter reconfiguration when the adaptation mechanism alone is not able to overcome the failure situation. The discussion of the results is embedded in the application framework of state estimation of a batch distillation process.

关键词： Temperature measurement Mathematical model Estimation Technological innovation Noise Fault tolerance Fault tolerant systems

来源：评论

学校读者我要写书评

暂无评论

Zero and low speed sensorless control for CSC-fed IPM drive system

Zero and low speed sensorless control for CSC-fed IPM drive ...

引用

Annual IEEE Conference on Applied Power Electronics Conference and Exposition (APEC)

作者： Ehsan Al-nabi Bin Wu Navid R. Zargari Vijay Sood Department Electrical & Computer Engineering Ryerson University Toronto ONT Canada MV Drive Research and Development Rockwell Automation Cambridge ONT Canada Faculty of Engineering & Applied Scince UOIT Oshawa ONT Canada

In this paper, a sensorless control method for low and zero speed operation is proposed for a high-power medium-voltage pulse-width-modulated Current-Source-Converter (CSC)-fed Interior Permanent Magnet Motor (IPM) drive system. The proposed method is based on injection of a high-frequency (HF) pulsating sinusoidal signal in the estimated synchronous reference frame of the drive's Field Oriented Control (FOC) scheme. The conventional FOC control scheme, low switching frequency, dc-link inductor and the inverter output three-phase filter capacitor of the medium-voltage high-power current-source drive present some challenges in the generation of the high-frequency injection signal. To overcome these challenges, the FOC scheme is modified by introducing a modulation index control with suitable dc-link current compensation to enhance the dynamic response of the injected signal and prevent any clamp in the injected signal. In addition, a Multisampling Space Vector Modulation (MS-SVM) method is proposed to prevent the distortion in the high-frequency signal due to a low switching frequency to injected signal ratio. It is found that by using the proposed FOC scheme and multisampling modulation scheme, and proper design of the high-frequency signal, an accurate rotor flux angle can be estimated for sensorless zero/low speed operation. Experimental results are provided to verify the proposed control method.

关键词： Rotors Inverters Stators Capacitors Pulse width modulation Mathematical model

来源：评论

学校读者我要写书评

暂无评论

Research on relay selection based on statistical channel state information

Research on relay selection based on statistical channel sta...

引用

International Symposium on Instrumentation & Measurement, Sensor Network and automation (IMSNA)

作者： Saiqiu Guo Jingmin Tang Yu Wei Wuke Li Chunping Zhang College of Information Science and Engineering Hunan City University Hunan China Faculty of Information Engineering and Automation Kunming University of Science and Technology Kunming China School of Computer Science and Technology Hunan Arts and Science University Hunan China

A relay selection algorithm is proposed to improve the system performance based on statistical channel state information(CSI) in amplify-and-forward(AF) cooperative networks. An exact and upper bound ergodic capacity formulation were derived for AF relay selection network. Theoretical analysis and simulation results validate the Tightness and feasibility of upper bound ergodic capacity.

关键词： Relays Upper bound Educational institutions Cooperative systems Wireless communication Signal to noise ratio Electronic mail

来源：评论

学校读者我要写书评

暂无评论

Recent Advances in Analysis and Control Design for Switched Fuzzy Systems: A Review

Recent Advances in Analysis and Control Design for Switched ...

引用

IEEE International Conference Intelligent Systems

作者： Vesna Ojleska Tatjana Kolemishevska-Gugulovska Gyorgyi Dymirkovsky SS Cyril and Methodius University in Skopje Faculty of Electrical Eng. and Information Technologies Institute of Automation & Systems Engineering Rugjer Boshkovik bb 1000 Skopje R. Macedonia Faculty of Engineering Depts. of Computer & of Control Engineering Dogus University of Istanbul Acibadem TR-34722 Istanbul R. Turkey

ISBN: (纸本)9781467322768

This paper overviews recent advances in the field of switched fuzzy systems, switched systems whose subsystems are fuzzy systems, followed by the comparative study for this kind of systems. Starting with the basic ideas of switched fuzzy systems, the comparative study is aimed in introducing the diverse approaches in their model construction, as well as the challenges related with the stability analysis and stabilization of such systems. The last includes the issue of stability analysis and finding conditions for existence of switched fuzzy controllers which will stabilize the nonlinear system.

关键词： control fuzzy logic fuzzy systems hybrid systems nonlinear systems switched systems switching Fuzzy systems Stability analysis analytical control design control FUZZY CONTROLLER Nonlinear systems

来源：评论

学校读者我要写书评

暂无评论

The application of delay control theory in electric power transmission system

The application of delay control theory in electric power tr...

引用

Chinese Control and Decision Conference, CCDC

作者： Zhihong Hao Liang Jiankun Ren Yan Faculty of Engineering The Open University of China Beijing 100039 China Computer Center Shenyang Pharmacological University Shenyang China Information Engineering School Inner Mongolia Science and Technology University Baotou China School of Automation Science and Electrical Engineering Beihang University Beijing China

For long distance electric power transmission system, the neutral delay system model of current and voltage on lossless and even transmission line were established, on this basis a new control strategy of power transmission system based on the linear semigroup spectral decomposition method was proposed, simulation results show that the effectiveness of the proposed method. By this proposed method the combination of delay control theory and electrical engineering was achieved, and it has promotional value.

关键词： Power transmission lines Propagation losses Mathematical model Delay systems Educational institutions Delay

来源：评论

学校读者我要写书评

暂无评论

Study and implementation of wireless sensor networks collaboration based on bio-inspired trust and reputation model(BTRM)

International Journal of Digital Content Technology and its ...

引用

International Journal of Digital Content Technology and its Applications 2012年第1期6卷 471-478页

作者： Liu, Shouqiang Qi, Deyu Meng, Jing Liu, Bo School of computer Science and Engineering South China University of Technology Guangzhou 510006 China School of Physics and Telecommunication Engineering South China Normal University Guangzhou 510006 China Guangdong Communication Polytechnic Guangzhou 510800 China Faculty of Automation Guangdong University of Technology Guangzhou 510006 China

Wireless sensor networks (WSNs) are usually deployed in the non-controlled environment without maintenance, facing the danger of information disclosure, tampering, replay attacks, denial of service and other threats, it makes collaboration among WSN nodes becomes more and more vital. Some common trust collaboration model is analyzed and summarized in this paper firstly, after studying the collaboration of the ant colony system, the trust model based on Biologically-inspired Trust and Reputation Model (BTRM) used for wireless sensor networks is put forward, also the features and architecture of the simulation system is proposed. This paper describes BTRM theory and the design and implementation of simulation system in detail. The simulation shows the output average path length, the average satisfaction, the average deviation and so on is more satisfied with the improvements.

关键词： Ant colony optimization

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：