检索结果-内蒙古大学图书馆

control Incentives for Leader-Follower Model in Communication Networks and Softcomputing Potential

IFAC Proceedings Volumes 2001年第3期34卷 15-26页

作者： G.M. Dimirovski Yuanwei Jing Siying Zhang K. Sohraby Inst. of Automation & Systems Engg. SS Cyril & Methodius University Skopje. R. of Macedonia. and DOGUS University. 81010 Istanbul-Kadikoy R. of Turekey Fax# +90-2 1 6-32 7-9631 Institute of Control Science. School of Information Science & Engineering Northeastern University. Shenyang. Liaoning. 110006. P.R. of China Fax# +86-24-2389-3138 Dept. Of Computer Science & Telecommunications. University of Missouri - Kansas Kansas City. M064J JO. USA

The problem of networking supervision and traffic rate control in multi-service network systems is studied by using concepts of Nash equilibrium and Stackelberg strategy under assumption of two-level system architecture. Models of users, network provider and overall system in game-theoretic setting are presented. Linear Stackelberg incentive strategies are derived for both elastic and non-elastic traffic, and verified using Kelly's example. Outlines of the two-level integrated control and supervision architecture, and of the proposed fuzzy-Perti-net supervisor are given.

关键词： Communication networks fuzzy Petri-nets game theory incentives optimisation Stackelberg strategies

来源：评论

学校读者我要写书评

暂无评论

Adaptive Neuro controller for a Precise Maneouvring of Underwater Vehicle

引用

IFAC Proceedings Volumes 2000年第21期33卷 173-178页

作者： Zoran Vukić Bruno Borović Boris Tovornik Department of Control and Computer Engineering in Automation University of Zagreb Control Engineering Department Brodarski institute d.o.o. Institute of Automation University of Maribor Faculty of Electrical Engineering and Computer Science

A neuro controller for high precision manoeuvring of underwater vehicles require special attention to a number of factors including thruster and vehicle’s nonlinearities, couplings which exist between various degrees of freedom as well as effects of the sea currents. The neuro control system for underwater vehicle maneouvring described here is based on the conventional controller supported with the so called adaptive neural network.

关键词： neural networks underwater vehicle trajectory guidance

来源：评论

学校读者我要写书评

暂无评论

A Concept of Teaching Model-Based Condition Monitoring

引用

IFAC Proceedings Volumes 2000年第11期33卷 765-770页

作者： Andrej Rakar Ðani Juričić Stanko Strmčnik Department of Computer Automation and Control Jožef Stefan Institute Jamova 39 1111 Ljubljana Slovenia

Maintaining the technical currency becomes one of the challenging tasks facing industrial professionals. There is a strong need to extend the traditional topics such as feedback control, with topics concerning condition monitoring and automatic fault diagnosis. A framework for disseminating basic underlying knowledge through the life-cycle paradigm is presented. The paper addresses the design requirements and practical guidelines with experimental validation on laboratory test processes. The approach should help the practitioners to better understand the potentials of model-based fault diagnosis in industrial practice.

关键词： education fault detection fault isolation life cycles requirements analysis

来源：评论

学校读者我要写书评

暂无评论

Fault Detection in the Presence of Modelling Errors

引用

IFAC Proceedings Volumes 2000年第11期33卷 593-598页

作者： M. Žele Ð Juričić Department of Computer Automation and Control Jožef Stefan Institute Jamova 39 1000 Ljubljana Slovenia

The problem of detecting sensor faults in the presence of modelling errors in linear discrete time systems is addressed. In order to avoid false alarms due to such errors, a statistical test is proposed in which the effects of missmodelling are properly taken into account by using stochastic embedding technique. The effectiveness of the resulting (cautious) decision rule is demonstrated on a simulated DC motor-generator process.

关键词： inexact model model-based fault detection test statistics stochastic embedding

来源：评论

学校读者我要写书评

暂无评论

Scaled H ∞ Filtering for Sensitivity Optimization of Detection Filters 1

引用

IFAC Proceedings Volumes 2000年第11期33卷 329-335页

作者： A.M. Edelmayer J. Bokor Systems and Control Laboratory Computer and Automation Institute Hungarian Academy of Sciences Budapest XL Kende u. 13-17. H-1111 Hungary

This paper deals with sensitivity optimization of detection filters. The robust detection filter design problem as a H ∞ filtering problem is considered. The objective is to provide the smallest scaled L 2 gain of the unknown input of the system that is guaranteed to be less than a prespecified level, i.e. , to produce a filter with optimal disturbance suppression capability in such a way that sufficient sensitivity to failure modes is still maintained. The effect of two different input scaling approaches to the optimization process is investigated. It is shown how to obtain bounds on the scaled L 2 gain by transforming the standard H ∞ filtering problem into a convex feasibility problem, specifically, a structured, linear matrix inequality (LMI). Numerical examples demonstrating the effect of the scaled optimization with respect to conventional H ∞ filtering is presented.

关键词： Convex optimization Constant similarity scaling Fault detection isolation H ∞ filtering LMI optimization LTV systems

来源：评论

学校读者我要写书评

暂无评论

Real-time scheduling on multithreaded processors

Real-time scheduling on multithreaded processors

引用

IEEE International Conference on Embedded and Real-Time Computing Systems and Applications (RTCSA)

作者： J. Kreuzinger A. Schulz M. Pfeffer T. Ungerer U. Brinkschulte C. Krakowski Institute for Computer Design and Fault Tolerance University of Karlsruhe Karlsruhe Germany Institute for Process Control Automation and Robotics University of Karlsruhe Karlsruhe Germany

This paper investigates real-time scheduling algorithms on upcoming multithreaded processors. As evaluation testbed we introduce a multithreaded processor kernel which is specifically designed as core processor of a micro-controller or system-on-a-chip. Handling of external real-time events is performed through multithreading. Real-time threads are used as interrupt service threads (ISTs) instead of interrupt service routines (ISRs). Our proposed micro-controller supports multiple ISTs with zero-cycle context switching overhead. We investigate the behavior of fixed priority preemptive, earliest deadline first, least laxity first and guaranteed percentage scheduling with respect to multithreaded processors. Our finding is that the strategies GP and LLF result in a good blending of instructions of different threads thus enabling a multithreaded processor to utilize latencies best. Assuming a zero-cycle context switch LLF performs best, however implementation cost context, are prohibitive.

关键词： Processor scheduling Yarn Switches Scheduling algorithm System testing Kernel Process design System-on-a-chip Multithreading Delay

来源：评论

学校读者我要写书评

暂无评论

Model Based Fault Detection: The Optimal Past, The Robust Present and a Few Thoughts on the Future 1 2

引用

IFAC Proceedings Volumes 2000年第11期33卷 65-76页

作者： S. Rami Mangoubi M. András Edelmayer C. S. Draper Laboratory 555 Technology Square Cambridge MA 02139 USA Systems and Control Laboratory Computer and Automation Research Institute Hungarian Academy of Sciences Budapest Kende u. 13-17 H-1111 Hungary

This paper presents a formulation for a class of robust fault detection problems, and its corresponding solution approach. In order to provide insight into the robust algorithm, one needs to consider the past and understand its historical origins in optimal fault detection, where it is assumed that both plant and noise models are accurate. The deleterious effect of plant model uncertainties on the performance of the optimal tests is illustrated, thus motivating the idea of robust fault detection, which makes use of robust game theoretic ( H ∞ ) or risk sensitive estimators. These estimators provide test residuals or statistics that are insensitive to uncertainties, but still sensitive to failure modes. The paper concludes by motivating and suggesting new ideas for future research.

关键词： Detection filters Robust FDI H ∞ filtering Kalman filters Multiple hypothesis test Risk seeking estimation

来源：评论

学校读者我要写书评

暂无评论

On-line Reconfiguration of Real-Time Robot Motion and Force control

引用

IFAC Proceedings Volumes 2000年第27期33卷 171-176页

作者： A. Robertsson A. Valera K. Nilsson R. Johansson Dept. of Automatic Control Lund University SE-22100 Lund Sweden Dept. of Systems Engineering & Automation Valencia Technical University ES-46022 Valencia Spain Dept of Computer Science Lund Institute of Technology Lund University SE-22100 Lund Sweden

Combining position and force control is highly desirable in many robot applications. Many years of extensive research has resulted in a number of promising control approaches, but often too much engineering effort is required in order to evaluate a low level (high performance) control scheme on a real manipulator. The new control system we have obtained has two main advantages: first it provides a total open control architecture, and second it is the simplicity and the interactivity of the platform developed. Using this new control architecture, any force and motion control strategy can be programmed and implemented in a graphical and easy way.

关键词： Robot control Force control Embedded systems Rapid prototyping Non-linear control

来源：评论

学校读者我要写书评

暂无评论

Modelling and Identification with Rational Orthogonal Basis Functions

引用

IFAC Proceedings Volumes 2000年第15期33卷 445-455页

作者： Paul Van den Hof Bo Wahlberg Peter Heuberger Brett Ninness Jozsef Bokor Tomás Oliveira e Silva Department of Applied Physics Delft University of Technology Lorentzweg 1 2628 CJ Delft The Netherlands S3 - Automatic Control Royal Institute of Technology S-100 44 Stockholm Sweden. Department of Electrical and Computer Engineering The University of Newcastle Callaghan NSW 2308 Australia. Computer and Automation Research Institute Hungarian Academy of Sciences Kende u. 13-17 H-1502 Budapest Hungary Dept. Electrónica e Telecommunicações University of Aveiro 3810-183 Aveiro Portugal

Decomposing dynamical systems in terms of orthogonal expansions enables the modelling/approximation of a system with a finite length expansion. By flexibly tuning the basis functions to underlying system characteristics, the rate of convergence of these expansions can be drastically increased, leading to highly accurate models (small bias) being represented by few parameters (small variance). Additionally algorithmic and numerical aspects are favourable. A recently developed general theory for basis construction will be presented, that is a generalization of the classical Laguerre theory. The basis functions are applied in problems of identification, approximation, realization, uncertainty modelling, and adaptive filtering, particularly exploiting the property that basis function models are linearly parametrized. Besides powerful algorithms, they also provide useful analysis tools for understanding the underlying identification/approximation algorithms.

关键词： System identification orthogonal basis functions series expansions model reduction parametrization

来源：评论

学校读者我要写书评

暂无评论

Layered Multi-Agent Reactive-Behavior Learning in a Robotic Soccer

引用

IFAC Proceedings Volumes 2000年第27期33卷 545-550页

作者： Andon V. Topalov Spyros G. Tzafestas Gregor Novak Dept. of Control Systems Technical University of Sofia Plovdiv hranch61 Sankt Petersburg Blvd.4000 Plovdiv BULGARIA tel./fax.: +359- 32- 631103 Intelligent Robotics and Automation Lab. Dept. of Electrical and Computer Eng. National Technical University of Athens Zografou 15773 Athens GREECE tel.: +30- 1- 7722489 fax: +30-1- 7722490 Institute for Handling Devices and Robotics Vienna University of Technology Favoritenstrasse 9-11 A-1040 Vienna AUSTRIA

Robotic soccer is an interesting test bench for the field of self-organizing and cooperating multi-agent systems. This paper deals with learning of two basic low-level behaviors that will enable the robotic player to participate further in higher-level collaborative and adversarial learning situations. First, a ball interception and obstacle avoidance behavior is learned. Then the acquired skills are incorporated into a next higher-level multi-agent learning scenario, namely the shooting ball behavior. The proposed control scheme for these behaviors consists of a trajectory generator with a layered structure, which supplies data to a trajectory-tracking controller.

关键词： mobile robots agents learning obstacle avoidance trajectory planning tracking control

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：