检索结果-内蒙古大学图书馆

IEEE Annual Conference on Decision and control

作者： Zhiqiang Zuo Youhua Fu Yijing Wang Chanying Li Michael Z. Q. Chen Tianjin Key Laboratory of Process Measurement and Control School of Electrical Engineering and Automation Tianjin University Academy of Mathematics and Systems Science Chines Academy of Sciences Department of Mechanical Engineering The University of Hong Kong

ISBN: (纸本)9781467320658

The problem of reachable set bounding for a class of linear systems subject to both discrete and distributed delays is addressed in this paper. First, a new criterion is derived to give an ellipsoid which bounds all the states starting from the origin by inputs with peak-values. The constraint with a special structure that appeared in our previous result is removed by combining the Jensen integral inequality and the reciprocally convex approach. In addition, the obtained condition brings a tighter reachable set estimation with lower computational complexity. We also extend the above result to systems with polytopic uncertainties. Finally, an example is presented to illustrate the merit of our proposed method.

关键词： delay distribution Linear system discrete element Ellipsoid complexity classes Bound Set (Psychology)

来源：评论

学校读者我要写书评

暂无评论

An alternative EPSAC based control strategy for multivariable time delay processes

An alternative EPSAC based control strategy for multivariabl...

引用

IEEE International Conference on automation, Quality and Testing, Robotics, AQTR

作者： Cristina Ioana Pop Clara M. Ionescu Robin De Keyser Eva Henrietta Dulf Honoriu Valean Adrian Neaga Cosmin Darab Department of Automatic Control Technical University of Cluj Napoca Cluj-Napoca Romania Faculty of Engineering and Architecture EeSA-Department of Electrical energy Systems and Automation Ghent University Gent Belgium

Multivariable time delay processes are difficult to control due to the input-output interactions, as well as multiple time delays that complicate the controller design process. The proposed method presented in this paper consists of a dynamic decoupling strategy - compared to the more general used steady state decoupling techniques - and a delay time compensation (DTC) structure in which the controller is designed based on the Extended Prediction Self Adaptive control (EPSAC) approach. The main concern regarding the proposed method is directed towards the possible lack of robustness against time delay variations - a problem that is frequently encountered in DTC structures. Moreover, the decoupling technique implemented consists in adding supplementary time delay to some input channels of the MIMO process, which may result in a worsening of the robustness problems. The simulations presented show that the proposed method can ensure robust stability and robust performance even for significant time delay variations.

关键词： Delay effects Process control Delay Carbon Robustness Isotopes MIMO

来源：评论

学校读者我要写书评

暂无评论

A multiple local search strategy in memetic evolutionary computation for Multi-objective Robust control Design

A multiple local search strategy in memetic evolutionary com...

引用

IEEE International Conference on systems, Man and Cybernetics

作者： Jiaqi Liu X. Z. Gao X. Wang K. Zenger Department of Automation and Systems Technology Aalto University School of Electrical Engineering Finland Center for Control Theory and Guidance Technology Harbin Institute of Technology China College of Information Engineering Shanghai Maritime University China

Memetic algorithms (MAs) with multiple Local Search Strategies (LSSs) for the mixed H ∞ /H 2 robust control design is proposed and investigated in this paper. Multiple LSSs are introduced into a given evolutionary computation leading to a new memetic algorithm. The correcting memes, directed memes, and stochastic memes are used to form the meme pool for iterative search, by which the multiple LSSs can be combined with Multi-Objective Evolutionary Algorithms (MOEAs) together. The new algorithm is applied in Multi-objective Robust control Design (MRCD), which is capable of both moving toward and along the Pareto can yield a better performance for these two norms. Finally, the result of the proposed memetic algorithm is compared with the numerical solution of the convex approximations in terms of the Linear Matrix Inequalities (LMIs).

关键词： Memetics Robust control Algorithm design and analysis Optimization Search problems Robustness Sociology

来源：评论

学校读者我要写书评

暂无评论

Robust Stability of Discrete-Time Linear Descriptor systems with Time-Varying Uncertainties via Parametric Lyapunov Function

Robust Stability of Discrete-Time Linear Descriptor Systems ...

引用

IEEE Annual Conference on Decision and control

作者： Karina A. Barbosa Carlos E. de Souza Daniel Coutinho Department of Electrical Engineering Universidad de Santiago de Chile (USACH) Department of Systems and Control Laboratorio Nacional de Computacao Cientifica (LNCC/MCTI) Department of Automation and Systems Universidade Federal de Santa Catarina (UFSC)

ISBN: (纸本)9781467320658

This paper deals with the problem of admissibility analysis (i.e. regularity, causality and exponential stability) of discrete-time linear descriptor systems with uncertain time-varying parameters. The parameters enter affinely into the state matrix of the system state-space model, and their admissible values and variations are assumed to belong to given intervals. First, necessary and sufficient admissibility conditions for uncertainty-free discrete linear time-varying descriptor systems are presented. Next, strict LMI conditions based on parameter-dependent Lyapunov functions are proposed to ensure robust admissibility of uncertain descriptor systems. Both the cases of Lyapunov functions with affine and quadratic dependence on the system uncertain parameters are considered. The robust admissibility analysis methods incorporate information on available bounds on both the admissible values and variation of the uncertain parameters. Numerical examples are presented to demonstrate the potentials of the proposed methods.

关键词： Liapunov function Robust stability Descriptors Plant uncertain Acceptability Uncertainty discrete-time time varying exponential stability. In-law

来源：评论

学校读者我要写书评

暂无评论

Reinforcement Learning control Based on Multi-Goal Representation Using Hierarchical Heuristic Dynamic Programming

Reinforcement Learning Control Based on Multi-Goal Represent...

引用

International Joint Conference on Neural Networks

作者： Zhen Ni Haibo He Dongbin Zhao Danil V. Prokhorov Department of Electrical Computer and Biomedical Engineering University of Rhode Island State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Toyota Research Institute NA TTC

ISBN: (纸本)9781467314886

We are interested in developing a multi-goal generator to provide detailed goal representations that help to improve the performance of the adaptive critic design (ACD). In this paper we propose a hierarchical structure of goal generator networks to cascade external reinforcement into more informative internal goal representations in the ACD. This is in contrast with previous designs in which the external reward signal is assigned to the critic network directly. The ACD control system performance is evaluated on the ball-and-beam balancing benchmark under noise-free and various noisy conditions. Simulation results in the form of a comparative study demonstrate effectiveness of our approach.

关键词： ACD gene Automatic Shutoff Devices noise-free critic hierarchical structure Noise learning (artificial intelligence) dynamic programming Generator dynamos Heuristics

来源：评论

学校读者我要写书评

暂无评论

Optimised robust placement of hard quality sensors for robust monitoring of quality in Drinking Water Distribution systems

Optimised robust placement of hard quality sensors for robus...

引用

World Congress on Intelligent control and automation (WCICA)

作者： Rafał Łangowski Mietek A. Brdys Ruiyun Qi Department of Control Systems Engineering Gdańsk University of Technology Gdansk Poland School of Electronic Electrical and Computer Engineering College of Engineering and Physical Sciences University of Birmingham Edgbaston Birmingham UK College of Automation Engineering Nanjing University of Aeronautics and Astronautics Nanjing China

A problem of optimised robust placement of the hard quality sensors in Drinking Water Distribution systems under several water demand scenarios for robust quality monitoring is formulated. Numerical algorithms to solve the problem are derived. The optimality is meant as achieving at the same time a desired trade off between the sensor capital and maintenance costs and resulting robust estimation accuracy of the monitoring algorithm for several water demand scenarios insuring robustness with respect to the demand uncertainty. The robust estimation algorithm recently developed by the authors is applied as a soft quality in design of the sensor placement algorithms. The method and algorithm are validated by application to Chojnice DWDS case study.

关键词： Sensors Robustness Monitoring Optimization Accuracy Educational institutions Algorithm design and analysis

来源：评论

学校读者我要写书评

暂无评论

Stability Analysis for High Frequency Networked control systems

引用

IEEE Transactions on Automatic control 2012年第10期57卷 2694-2700页

作者： Hongjiu Yang Yuanqing Xia Peng Shi Mengyin Fu Institute of Electrical Engineering Yanshan University Qinhuangdao China School of Automation Key Laboratory of Intelligent Control and Decision of Complex Systems Beijing Institute of Technology Beijing China School of Engineering and Science Victoria University Melbourne VIC Australia Department of Computing and Mathematical Sciences University of Glamorgan Pontypridd UK

This note generalizes the stability analysis for a high frequency networked control system. The high-frequency networked control system is described by a delta operator system with a high frequency constraint. Stability conditions are given for the high frequency delta operator system. Furthermore, by developing the generalized Kalman-Yakubovic-Popov lemma, improved stability conditions are also presented in terms of linear matrix inequalities. Some experiment results are presented to illustrate the effectiveness of the developed techniques.

关键词： Stability analysis Delay Linear matrix inequalities Frequency control Educational institutions Power system stability Numerical stability

来源：评论

学校读者我要写书评

暂无评论

Information Generation and Lagrangian Coherent Structures in Multiscroll Attractors *

引用

IFAC Proceedings Volumes 2012年第12期45卷 93-98页

作者： Filipe I. Fazanaro Diogo C. Soriano Ricardo Suyama Marconi K. Madrid Romis Attux José Raimundo de Oliveira Modular Robotic Systems Laboratory (LSMR) Department of Computer Engineering and Industrial Automation (DCA) School of Electrical and Computer Engineering (FEEC) UNICAMP Brazil Centro de Engenharia Modelagem e Ciências Sociais Aplicadas Universidade Federal do ABC (UFABC) Santo André Brazil LSMR Department of Energy Control and Systems (DSCE) FEEC UNICAMP Laboratory of Signal Processing for Communications (DSPCom) DCA FEEC UNICAMP

The present work aims to apply a recently alternative approach to estimate the Lyapunov exponents that is suitable for such piecewise linear model in order of characterizing - with the aid of the metric entropy - the degree of information generated by several kinds of multiscroll attractors. Another analytical path is followed with the extraction of the corresponding Lagrangian coherent structures, which allows the determination of the dynamical system separatrices and also of the folding/stretching behavior that results in chaos. Overall, the reported study can be understood as an investigation, from distinct theoretical standpoints, of key aspects regarding the dynamic behavior of systems capable of engendering multiscroll structures.

关键词： chaotic behavior fractal dimension information generation Lagrangian coherent structures Lyapunov exponents multiscroll chaotic attractors non-smooth models

来源：评论

学校读者我要写书评

暂无评论

controlling chaos in power system based on finite-time stability theory

引用

Chinese Physics B 2011年第12期20卷 101-108页

作者：赵辉马亚军刘思佳高士根钟丹 Tianjin Key Laboratory for Control Theory and Applications in Complicated Systems Tianjin University of Technology School of Electronic and Information Engineering Beijing Jiaotong University School of Electrical Engineering and Automation Tianjin University

Recent investigations show that a power system is a highly nonlinear system and can exhibit chaotic behaviour leading to a voltage collapse, which severely threatens the secure and stable operation of the power system. Based on the finite-time stability theory, two control strategies are presented to achieve finite-time chaos control. In addition, the problem of how to stabilize an unstable nonzero equilibrium point in a finite time is solved by coordinate transformation for the first time. Numerical simulations are presented to demonstrate the effectiveness and the robustness of the proposed scheme. The research in this paper may help to maintain the secure operation of power systems.

关键词： power system chaos control finite-time stability stabilize unstable nonzero equilibrium point robust controller

来源：评论

学校读者我要写书评

暂无评论

A Modified PSO Method Based on Cultural Algorithm and Quantum Computing

A Modified PSO Method Based on Cultural Algorithm and Quantu...

引用

International Conference on Computational Intelligence and Security

作者： Xiao-Zhi Gao Ying Wu Xiaolei Wang Xianlin Huang Kai Zenger Xiaofeng Wang College of Information Engineering Shanghai Maritime University Shanghai P. R. China Center for Control Theory and Guidance Technology Harbin Institute of Technology Harbin P. R. China Department of Automation and Systems Technology Aalto University School of Electrical Engineering Aalto Finland

A novel Cultural Quantum-behaved Particle Swarm Optimization algorithm (CQPSO) is proposed in this paper to improve the performance of the Quantum-behaved PSO (QPSO). The cultural framework is embedded in our QPSO, and the knowledge stored in the belief space can guide the evolution of the QPSO. A total of 15 high-dimensional and multi-modal functions as well as an optimal pressure vessel design problem are employed to investigate the proposed algorithm. Numerical simulations results demonstrate that the CQPSO can indeed outperform the QPSO.

关键词： Cultural differences Particle swarm optimization Sociology Statistics Optimization Educational institutions Algorithm design and analysis

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：