检索结果-内蒙古大学图书馆

Model-Free Adaptive PID controllers Applied to the Benchmark PID'12

IFAC Proceedings Volumes 2012年第3期45卷 370-375页

作者： Antonio S. Silveira Antonio A.R. Coelho Francisco J. Gomes Research Group in Applied Control Technologies Dept. of Automation and Systems Federal University of Santa Catarina PO Box 476 Zip 88040-900 Florianópolis SC Brazil

Many tuning strategies for PID control algorithms have been proposed in the literature depending on modeling choice from heuristics, physical laws and/or experimental essays. In this paper, the properties of three model-free adaptive PID control design conceptions, known as direct PID control, are investigated and implemented. The recursive least squares estimator is used to identify the PID controller gains without the knowledge of the plant mathematical model. The tuning strategies of the direct PID controller are applied to the boiler control system proposed by Fernando Morilla (UNED, Spain) as a benchmark problem for the 2012 IFAC Conference on Advances in PID controllers.

关键词： PID control identification self-tuning stability minimum variance Benchmark PID'12

来源：评论

学校读者我要写书评

暂无评论

E-AirQuality: A dynamic web based application for evaluating the air quality index for the city of Kozani, Hellas

E-AirQuality: A dynamic web based application for evaluating...

引用

15th Panhellenic Conference on Informatics, PCI 2011

作者： Ioannis, Skordas Fragulis, George F. Triantafyllou, Athanassios G. Dept. of Geotechnology and Environmental Engineering Laboratory of Atmospheric Pollution and Environmental Physics Tecnological Educational Inst. of Western Macedonia Kozani Hellas Greece Laboratory of Web Technologies and Applied Control Systems Dept. of Computer Science and Mathematics Tecnological Educational Inst. of Western Macedonia Kozani Hellas Greece

ISBN: (纸本)9780769543895

The purpose of this work is to provide access to meteorological data as well as information of the status of air quality for the city of Kozani in real time with a userfriendly interface. The application has been developed using only open source software . MySQL has been used as a relational database management system, PHP as the scripting language for the development of the application and to connect the application to the database and Javascript/HTML for the user interface programming . The users are separated to two different groups (simple users-visitors and authorised users). Each group is provided by a number of functionalities. © 2011 IEEE.

关键词： Open source software

来源：评论

学校读者我要写书评

暂无评论

Parallel-channel flow instabilities and active control schemes in two-phase microchannel heat exchanger systems

Parallel-channel flow instabilities and active control schem...

引用

作者： Zhang, Tie Jun Wen, John T. Julius, Agung Bai, He Peles, Yoav Jensen, Michael K. Rensselaer Polytechnic Institute Troy NY 12180 United States Center for Automation Technologies and Systems United States Electrical Computer and Systems Engineering Dept. United States Mechanical Aerospace and Nuclear Engineering Dept. United States Mechanical Engineering Dept. Northwestern University United States

ISBN: (纸本)9781424474264

Parallel-channel flow mal-distribution and pressure-drop flow oscillations are two of the most severe dynamic instabilities for boiling flow especially in microchannel systems. This paper presents a framework for the transient analysis and active control of microchannel flow instabilities at a system-level view. A lumped two-phase flow system model is derived from the momentum balance equation to capture the characteristics of the microchannel heat exchangers. Bifurcations of flow distribution and inlet pressure can arise in parallel-channel two-phase flow systems. This paper investigates the control-theoretic properties with different control devices, including inlet valves and supply pump. Individual control valves at the inlet of each channel can be used to suppress both flow mal-distribution and flow oscillations effectively, although this scheme is subject to higher pressure loss and potential higher supply pumping power. Using the pump alone can only suppress pressure-drop flow oscillations, but not for flow mal-distribution in two identical parallel channels. However, we make an interesting observation that with different channel properties, we regain controllability from the pump and observability from a single channel flow rate measurement. © 2010 AACC.

关键词： Channel flow

来源：评论

学校读者我要写书评

暂无评论

A distributed control approach to robust output regulation of networked linear systems

A distributed control approach to robust output regulation o...

引用

2010 8th IEEE International Conference on control and automation, ICCA 2010

作者： Wang, Xiaoli Hong, Yiguang Jie, Huang Jiang, Zhong-Ping Key Laboratory of Systems and Control Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100190 China Dept. of Mechanical and Automation Engineering Chinese University of Hong Kong Hong Kong Hong Kong Dept. of Electrical and Computer Engineering Polytechnic Institute of New York University Brooklyn NY 11201 United States

ISBN: (纸本)9781424451951

In this paper, the robust output regulation problem of a networked linear system with uncertainties is considered. Based on internal model, distributed control scheme is adopted to achieve the objectives of asymptotic tracking and disturbance rejection in a networked uncertain system where both the reference inputs and disturbances are generated by an exosystem. Both state and output feedback designs are given. © 2010 IEEE.

关键词： Linear systems

来源：评论

学校读者我要写书评

暂无评论

An experimental analysis of the effects of noise on Wi-Fi video streaming

An experimental analysis of the effects of noise on Wi-Fi vi...

引用

IEEE Instrumentation & Measurement Technology Conference

作者： L. Angrisani K. Kyriakopoulos A. Napolitano D. J. Parish M. Vadursi W. Whittow Dept. of Computer Science and Control Systems University of Naples Federico II Dept. of Electronic and Electrical Engineering Loughborough University Dept of Electrical Engineering University of Naples Federico II Dept. of Technologies University of Naples "Parthenope"

ISBN: (纸本)9781424428328;9781424428335

Wireless networks such as WiFi suffer communication performance issues in addition to those seen on wired networks due to the characteristics of the radio communication channel used by their Physical Layers (PHY). Understanding these issues is a complex but necessary task given the importance of wireless networks for the transfer of wide ranging packet steams including video as well as traditional data. Simulators are not accurate enough to allow all the intricacies of such communication to be accurately understood, especially when complex interactions between the protocols of different layers occurs. The paper suggests cross layer measurement as a solution to the problem of understanding and analysis of such complex communication issues and proposes a framework in which appropriate performance measurements can be made from a WiFi network supporting a video streaming application. The framework has been used to collect these measurements at the PHY, MAC, Transport and Application layers. Analysis of the collected measurements has allowed the effects of noise interference at the PHY to be related to the perceived performance at the Application Layer for a video streaming application. This has allowed the effect of the SNR on the download time of a video sequence to be studied.

关键词： Cross-layer measurements Video streaming Wireless networks Wi-Fi

来源：评论

学校读者我要写书评

暂无评论

H∞O gain-scheduling based control of the heavy vehicle model, a TP model transformation based control

H∞O gain-scheduling based control of the heavy vehicle mode...

引用

2008 IEEE International Conference on Fuzzy systems, FUZZ 2008

作者： Petres, Zoltán Nagy, Szabolcs Gáspar, Péter Baranyi, Peter Dept. of Telecommunications and Media Informatics Budapest University of Technology and Economics Kende utca 13-17 1111Budapest Hungary Systems and Control Lab. Computer and Automation Research Institute Hungarian Academy of Sciences Kende utca 13-17 1111Budapest Hungary

ISBN: (纸本)9781424418190

This paper is focusing on rollover prevention to provide a heavy vehicle with the ability to resist overturning moments generated during cornering. A combined yaw-roll model including the roll dynamics of unsprung masses is studied. This model is nonlinear with respect to the velocity of the vehicle. In our model the velocity is handled as an LPV scheduling parameter. The Linear Parameter-Varying model of the heavy vehicle is transformed Into a proper polytopic form by Tensor Product model transformation. The H∞ gain-scheduling based control is Immediately applied to this form for the stabilization. The effectiveness of the designed controller is demonstrated by numerical simulation. © 2008 IEEE.

关键词： Scheduling

来源：评论

学校读者我要写书评

暂无评论

Modelling and identification of a small unmanned aerial vehicle

Modelling and identification of a small unmanned aerial vehi...

引用

作者： Soumelidis, Alexandres Gaspar, Péter Bauer, Péter Balas, Gary Systems and Control Lab Computer and Automation Research Institute Hungarian Academy of Sciences Kende st 13-17 Budapest H-1111 Hungary Dept. of Control and Transport Automation Faculty of Transportation Engineering Budapest University of Technology and Economics Bertalan Lajos st 2 Budapest H-1111 Hungary Dept. of Aerospace Engineering and Mechanics Institute of Technology University of Minnesota 110 Union st SE Minneapolis MN 55455-0153 United States

ISBN: (纸本)9789633130117

The field of Unmanned Aerial Vehicles (UAV) has gained great significance in the R&D activities of several institutions, and numerous realizations have been constructed. controlling the movement of a UAV is one of the most significant tasks in the hierarchical control system that should be realized in order to successfully manage UAVs in several missions. Precise control of the movement requires accurate mathematical models of the aircraft that correspond to the several control schemes that are intended to apply, including linearised, LPV, and nonlinear ones. The source of mathematical models includes the physical model constructed on the basis of the Newtonian equations and the rules of aerodynamics, as well as the use of empirical observations, measurements. The methodology of system identification offers the tools that can be used to manage this field. The systems and control Laboratory of the computer and automation Research Institute in cooperation with University of Minnesota and Budapest University of Technology and Economics has built - as a part of a more general framework established to solve complex UAV control problems - small UAVs, equipped with on-board sensors and embedded computer with the purpose of obtaining an adequate test platform for the aircraft experiments. Based on on-board measurements acquired during the flight tests performed with the UAVs, the opportunity has been given to test several system identification approaches corresponding to the control tasks to be solved. This paper gives an outline of the system identification and modelling methods that have successfully been applied, and also analyzes the problems encountered in the data-acquisition - signal processing - computing chain.

关键词： Unmanned aerial vehicles (UAV)

来源：评论

学校读者我要写书评

暂无评论

A far-range off-line camera calibration method for stereo lane detection systems

A far-range off-line camera calibration method for stereo la...

引用

2007 IEEE Instrumentation and Measurement Technology, IMTC 2007 - Synergy of Science and Technology in Instrumentation and Measurement

作者： Bódis-Szomorú, András Dabóczi, Tamás Fazekas, Zoltán Budapest University of Technology and Economics Dept. of Measurement and Information Systems Magyar tudósok krt. 2 H-1117 Budapest Hungary Systems and Control Laboratory Computer and Automation Research Institute Kende u. 13-17 H-1111 Budapest Hungary

ISBN: (纸本)1424410800

A far-range camera calibration method for vision sensors used in automatic lane detection systems is investigated Autonomous vehicle guidance based on stereo image acquisition requires the knowledge of the camera parameters, such as camera position, orientation, lens distortion, focal length etc. with high precision Calibration is performed by placing markers in known positions in front of the vehicle holding the camera(s) and by detecting the location of their images in the acquired snapshots. The parameters are then estimated by minimizing the geometric error in the image. Most of the methods discovered in the literature do not consider errors in the measurement of marker locations. However, a precise marker arrangement for far-range calibration might be expensive to set up. This paper shows that imprecision in the 3D location of the markers can not be tolerated in some practical situations and in such cases, a different optimization is proposed in the calibration of the extrinsic camera parameters (camera position and orientation). A position estimation method is also shown to extract marker positions from far-range laser distance meter measurements. The estimated marker positions are corrected by considering aiming errors, as well. Parameter errors are also estimated. It will be shown that our new calibration and optimization method is expected to result a good accuracy compared to commercial methods. © 2007 IEEE.

关键词： Stereo vision

来源：评论

学校读者我要写书评

暂无评论

Implementation of Industrial Robot Force control Case Study: High Power Stub Grinding and Deburring

Implementation of Industrial Robot Force Control Case Study:...

引用

2006 IEEE/RSJ International Conference on Intelligent Robots and systems

作者： A. Robertsson T. Olsson R. Johansson A. Blomdell K. Nilsson M. Haage B. Lauwers H. De Baerdemaeker T. Brogardh H. Brantmark Department of Automatic Control Lund University Hospital Lund Sweden Dept. of Automatic Control Lund University Sweden Dept. of Computer Science Lund University Sweden Department of Computer Science Lund University Hospital Lund Sweden Dept. of Mechanical Engineering Faculty of Engineering Heverlee Belgium Department of Mechanical Engineering Heverlee Belgium ABB Automation Technologies - Robotics Västerås Sweden

In this paper, the results from a joint industry-academia project in industrial robotic force control are presented. The extension and implementation of an external sensor system for an industrial robot system, which can be used for high-bandwidth force control, are described. Results from two industrial applications using the system are presented, a stub grinding application using a new compliant grinding end-effector integrated with the robot control system, and a deburring application with a stiff tool requiring high-bandwidth force control in six degrees of freedom. Using the system an easily reconfigurable control structure was achieved, which was able to control contact forces with a sampling bandwidth of an order of magnitude higher than for conventional robot controllers

关键词： Industrial control Service robots Force control Deburring Electrical equipment industry Robot sensing systems control systems Robot control Sensor systems Sampling methods

来源：评论

学校读者我要写书评

暂无评论

Usability and Interoperability of IEC 61499 based distributed automation systems

Usability and Interoperability of IEC 61499 based distribute...

引用

IEEE International Conference on Industrial Informatics (INDIN)

作者： Christoph Sunder Alois Zoitl James H. Christensen Valeriy Vyatkin Robert W. Brennan Antonio Valentini Luca Ferrarini Thomas Strasser Jose L. Martinez-lastra Franz Auinger Automation and Control Institute (ACIN) Vienna University of Technology Vienna Austria Holobloc Inc. Cleveland Heigths OH USA Dept. of Electrical and Computer Engineering The University of Auckland Auckland New Zealand Schulich School of Engineering University of Calgary Calgary Alberta Canada Centro di Ricerca e Innovazione Tecnologica Crit Srl Vignola (Mo) Italy Dipartimento di Elettronica e Informazione Politecnico di Milano Milano Italy Robotics and Adaptive Systems PROFACTOR Produktionsforschungs GmbH Steyr-Gleink Austria Institute of Production Engineering Tampere University of Technology Tampere Finland Upper Austrian University of Applied Science Automation Engineering University of Applied Science Wels Austria Automation Engineering Upper Austrian University of Applied Science Wels Austria

Since IEC 61499 has reached the state of an international standard and a substantial body of research results exists the question of the authors as main intention for this paper was: Do the models of IEC 61499 solve all problems when thinking of usability and interoperability in heterogeneous system environments? The main problems discussed within the paper concern to the execution model defined for basic function blocks and the scheduling of events within function block networks.

关键词： Usability IEC standards automation Software tools control systems Automatic control Robots Adaptive systems Production engineering Job shop scheduling

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：