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44th ieee Conference on Decision control/European control Conference (CCD-ECC)

作者： Sima, Vasile Natl Inst Res & Dev Informat Bucharest 011455 Romania

ISBN: (纸本)0780395670

State-of-the-art, uni-processor algebraic Riccati equation solvers for automatic control computations are investigated and compared for various problem sizes. General-purpose SLICOT solvers are very efficient for small-size problems, but they cannot compete for larger problems with specialized solvers designed for certain problem classes, such as Newton solvers using low rank Cholesky factors of the solutions of Lyapunov equations built at each iteration.

关键词： algebraic Riccati equations numerical algorithms computer-aided control system design numerical linear algebra software library

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Machine vision for feedback control in a steel rolling mill

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computerS IN INDUSTRY 2005年第8-9期56卷 997-1004页

作者： O'Leary, P Univ Min & Met Leoben Chair Automat Leoben Austria

This paper presents an application of an image processing system in the monitoring and control of the hot-rolling of steel bars. A robust implementation both with respect to camera packaging and data transmission has been choosen. A gigabit ethernet network is used for all communication within the system, whereby a switch with integrated fire-wall is used to distribute the data and provide connection to the outside world. The image processing algorithms use statistical estimates of confidence to ensure robust operation under extreme conditions. Feedback-control requires a sampling rate approximately 10 times higher that the bandwidth of the system which is to be controlled [K.J. Astrm, T. Hgglund, PID controllers: Theory, design, and Tuning, Instrumental Society of America, 1995 [1], Jukka Lieslehto, Wap application for pid controller tuning, in: proceedings of the 2000 ieee International symposium on computer-aided control system design, vol. September 25-27, Ancorage, Alaska, USA, 2000, pp. 168-172 [2]]. The system demonstrates the acquisition and processing of 500 frames per second in real time, this is commensurate with 50 Hz bandwidth presently possible for hydraulic systems. This opens the door to real-time feedback control using digital image processing. (c) 2005 Published by Elsevier B.V.

关键词： machine visions active snakes CMOS cameras

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Real-time control with Linux: A web services approach

Real-time control with Linux: A web services approach

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44th ieee Conference on Decision control/European control Conference (CCD-ECC)

作者： Basso, Michele Bucher, Roberto Romagnoli, Marco Vassalli, Massimo Univ Florence Dipartimento Sistemi & Informat Florence Italy

ISBN: (纸本)0780395670

The aim of the paper is to present an implementation of the already mature web services technology to the realtime world based on the project Linux RTAI which includes advanced tools for the integration of computer aided control system design environments. Within this context, RTAI-XML is a new server component executing within a RTAI domain that works as a bridge between a remote client application and a real-time process. The server exposes its methods and properties to the Internet using XML (eXtensible Markup Language) and a remote procedure call framework. The application contexts of the new platform range from control education to industrial applications.

关键词： control systems

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A driving simulator for teaching embedded automotive control applications

A driving simulator for teaching embedded automotive control...

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American control Conference 2005 (ACC)

作者： Griffiths, PG Gillespie, RB Univ Michigan Dept Mech Engn Ann Arbor MI 48109 USA

ISBN: (纸本)0780390989

This paper presents the multi-disciplinary nature of embedded control system design and how a course developed at the University of Michigan addresses the broad set of topics needed for embedded control system design to senior engineering undergraduates from a variety of backgrounds. The lab component uses a typical automotive powertrain micro-controller and teaches topics in system dynamics through programming assignments involving dynamical systems simulations. Students interact with and feel their virtual environments though a haptic interface. We present the final project in the course, in which students build a fixed-based driving simulator to test advanced automotive control system designs. This course was developed partially in response to industry demand for students with experience in embedded control. The course has generated remarkable student interest and former students have provided positive feedback about projects and have reported better opportunities in the job market as a result of their experience in this course.

关键词： computer aided instruction control facilities control system analysis laboratories microcontrollers virtual reality University of Michigan automotive power-train microcontroller driving simulator dynamical systems simulations embedded automotive control

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design of a new parallel haptic device for desktop applications 1

Design of a new parallel haptic device for desktop applicati...

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1st joint Eurohaptics Conference and symposium on Haptic Interfaces for Virtual Environment and Teleoperator systems - World Haptics Conference, WHC 2005

作者： Gosselin, Florian Martins, Jean-Pierre Bidard, Catherine Andriot, Claude Brisset, Julien CEA LIST Route du Panorama Fontenay-aux-Roses-Cedex92265 France

ISBN: (纸本)0769523102

In this paper, we present a new six degrees of freedom haptic device developed at CEA-LIST for desktop applications emphasizing quick and precise manipulation. This device relies on a light parallel architecture connecting the base of the robot to the mobile platform manipulated by the user. It is dimensioned and optimized to fit design requirements associated with computer aided design or virtual sculpting. The design methodology relies on a geometric and static optimization which takes into account technological constraints associated with the main off the shelf components. The control scheme of this device is also described. Finally, feedback obtained from first integration tests are presented. © 2005 ieee.

关键词： computer aided design

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proceedings of the 2005 ieee systems and Information Engineering design symposium

Proceedings of the 2005 IEEE Systems and Information Enginee...

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2005 ieee systems and Information Engineering design symposium

ISBN: (纸本)0974455946

The proceedings contain 54 papers. The topics discussed include: a risk-based methodology for modeling, assessing, and managing risks to the Hampton roads Bridge tunnels;infrastructure analysis system (IAS);transportation safety and risk assessment;Volvo air flow analysis;work domain analysis for improvement of uninhabited aerial vehicle (UAV) operations;effective tool use in a habile agent;increasing efficiency of the development of user models;evaluation and redesign of product and service delivery processes;reduction of material handling in the packing area of IR steelcraft;out of well control;ramp operations monitoring system;runway operational quality assurance (ROQA) system;simulation and analysis of the inspection process of cargo containers;project selection for technology investment;towards a model for selection and scheduling of risky projects;and a web architecture to support the tailoring of training content and learner assessment.

关键词： computer aided design

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Web-based MATHEMATICA platform for systems and control education

Web-based MATHEMATICA platform for systems and control educa...

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20th ieee International symposium on Intelligent control, ISIC '05 and the13th Mediterranean Conference on control and Automation, MED '05

作者： Kujan, Petr Hromčík, Martin Šebek, Michael Department of Control Engineering Faculty of Electrical Engineering Czech Technical University in Prague Karlovo nam. 13 12135 Prague 2 Czech Republic Centre for Applied Cybernetics Faculty of Electrical Engineering Czech Technical University in Prague Karlovo nam. 13 12135 Prague 2 Czech Republic Centre for Applied Cybernetics Institute of Information Theory and Automation Pod vodarenskou vezi 4 18208 Praha 8 Czech Republic Institute of Information Theory and Automation Pod vodarenskou vezi 4 18208 Praha 8 Czech Republic

ISBN: (纸本)0780389360

computer algebra software tools in general, and the MATHEMATICA system in particular, are increasingly employed during the controls and systems graduate and undergraduate courses at FEE CTU in Prague. MATHEMATICA benefits from its high-level user interface, graphical abilities, as well as numerical and symbolic computational power and dedicated packages for control systems analysis and design (control systems Professional and Advanced Numerical Methods). In addition, MATHEMATICA provides a web-based platform for publication of results and presenting user-callable routines (webMATHEMATICA). In the Czech Republic a project financed by the Ministry of Education and called PUMA (Power User Mathematic Array) has been started recently, focused on creation of webaccessible software tools to support education at technical universities. The authors have been involved in these efforts and would like to contribute by creating a web site based on webMATHEMATICA dedicated to numerical and symbolic computations for systems and controls. This paper is the first report on this topic. The work is in rapid progress now and the paper summarizes the authors' plans and first results. ©2005 ieee.

关键词： computer aided software engineering

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SLICOT-Based Computational Tools for CACSD

SLICOT-Based Computational Tools for CACSD

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ieee International symposium on Intelligent control (ISIC)

作者： V. Sima National Institute of Research and Development of Informatics Bucharest Romania

The subroutine library in control theory (SLICOT) incorporates efficient and reliable algorithms for computer aided control systems design (CACSD), covering system identification, model and controller reduction, system analysis and design, and robust control. The main SLICOT functionality is made accessible from Matlab or Scilab environments via MEX- and M-files. The paper describes some of the available SLICOT-based Matlab functions, and presents comparative results under Matlab 7.0.1, illustrating the high performance of these software tools. Starting with Matlab 7, the control systems toolbox for Matlab uses SLICOT routines for some basic computations, including Sylvester and Lyapunov equations solution and block diagonalization

关键词： control system synthesis system analysis and design Algorithms Libraries control theory Reliability theory system identification Mathematical model Robust control Software tools

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A Case Study of a Real-Time controller design for a Car-Like Robot system

A Case Study of a Real-Time Controller Design for a Car-Like...

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ieee International symposium on Intelligent control (ISIC)

作者： Insop Song F. Karray M.S. Masmoudi Howard Li F. Guedea Department of Systems Design Engineering University of Waterloo Waterloo ONT Canada Department of Electrical Computer Engineering University of Waterloo Waterloo ONT Canada Department of Electrical Engineering and Computer Science ENIS Engineering School Sfax Tunisia Center for Innovation in Design and Technology ITESM Monterrey Nuevo Leon Mexico

In embedded system development, multi-tasks design is often used on real-time OS or interrupt driven environment. The multi-task programming development gives many advantages for developers. However, tasks should be carefully designed and analyzed to grantee that all concurrently running tasks run without missing timing requirements, also known as deadline. In this research, we investigate different types of real-time scheduling schemes and list their advantages and disadvantages. To be more realistic with real-time scheduling, we performed with a real-time kernel simulator and car-like robot and it's fuzzy logic control simulator. Based on these simulation we suggest the proper usage of real-time scheduling

关键词： computer aided software engineering Real time systems control systems Processor scheduling Dynamic scheduling Embedded system Fuzzy logic Robot programming Timing Kernel

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system analysis using redundancy of descriptor representation

System analysis using redundancy of descriptor representatio...

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2004 ieee International symposium on computer aided control system design

作者： Chen, Gan Nanzan University 27 Seirei-cho Seto Aichi 489-0863 Japan

Recently, by adopting redundant descriptor variables, several researchers have proposed less conservative analysis and synthesis conditions for the systems that could be described in framework of state space equations. In this paper, we introduce their researches about applications of redundant descriptor representations. © 2004 ieee.

关键词： systems analysis

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