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Advanced Coordinating Control System for Power Plant

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武汉理工大学学报 2006年第S3期28卷 962-968页

作者： WU Peng~1 WEI Shuangying~2 1.automation School,Chongqing university,campus A,Chongqin 400044,china 2.Management School,wuhan university of technology,wuhan 430070,china, automation School Chongqing UniversityCampus AChongqin 400044China Management School Wuhan University of TechnologyWuhan 430070China

The coordinating control system is popular used in power *** paper describes the advanced coordinating control by control methods and optimal operation,introduces their principals and features by using the examples of... 详细信息

关键词： power plant coordinating control system automation operation

THEORETICAL DESIGN AND MOTION PLANNING OF NONHOLONOMIC MANIPULATOR

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Chinese Journal of Mechanical Engineering 2004年第2期17卷 222-225页

作者： Tan Yuegang Deng Yuhui WU Zhengping School of Mechanical and Electronic Engineering,wuhan university of technology,wuhan 430070, china department of Science and technology Studies University College London WC1E 6BT UK School of Mechanical and Electronic Engineering Wuhan University of Technology Wuhan 430070 China

A new nonholonomic transmission mechanism is proposed based on thenonholonomic theory and nonlinear control principle, and combined with conditions of thenonholonomic motion planning and control, that is researched to compose method of the motiontransfer chain from this transmission mechanism, on which a new nonholonomic manipulator isdesigned. This nonholonomic manipulator is a controllable multi-joint manipulator that actuated onlyby two-servo electromotor. Its motion expresses the characteristic of nonholonomy constraint andnonlinear, and that also satisfies the chained form convertibility. And then, using the nonlinearcontrol principle of chained system, motion characteristic of the nonholonomic manipulator isapplied. From simulation verification and analysis, the usefulness of the theoretical design andcontrol strategies is shown, and that is important in design and research of handiness robot andmulti-finger robot hand.

关键词： Nonholonomic system Nonholonomic motion planning Nonlinear controlMulti-joint Manipulator

On the new results of global attractive set and positive invariant set of the Lorenz chaotic system and the applications to chaos control and synchronization

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Science in china(Series F) 2005年第3期48卷 304-321页

作者： LIAO Xiaoxin 1, 2, 3 , FU Yuli 4 & XIE Shengli 4 1. department of Control Science & Control Engineering, Huazhong university of Science & technology, wuhan 430074, china 2. School of automation, wuhan university of Science & technology, wuhan 430070, china 3. School of Information, Central South university of Economy, Politics and Law, wuhan 430064, china 4. School of Electronics & Information Engineering, South china university of technology, Guangzhou 510640, china Correspondence should be addressed to Liao Xiaoxin (email: xiaoxin_liao@***) department of Control Science & Control Engineering Huazhong University of Science & Technology Wuhan China School of automation Wuhan University of Science & Technology Wuhan China School of Information Central South University of Economy Politics and Law Wuhan China School of Electronics & Information Engineering South China University of Technology Guangzhou China

Constructing a family of generalized Lyapunov functions, a new method is proposed to obtain new global attractive set and positive invariant set of the Lorenz chaotic system. The method we proposed greatly simplifies the complex proofs of the two famous estimations presented by the Russian scholar Leonov. Our uniform formula can derive a series of the new estimations. Employing the idea of intersection in set theory, we extract a new Leonov formula-like estimation from the family of the estimations. With our method and the new estimation, one can confirm that there are no equilibrium, periodic solutions, almost periodic motions, wandering motions or other chaotic attractors outside the global attractive set. The Lorenz butterfly-like singular attractors are located in the global attractive set only. This result is applied to the chaos control and chaos synchronization. Some feedback control laws are obtained to guarantee that all the trajectories of the Lorenz systems track a periodic solution, or globally stabilize an unstable (or locally stable but not globally asymptotically stable) equilibrium. Further, some new global exponential chaos synchronization results are presented. Our new method and the new results are expected to be applied in real secure communication systems.

关键词： Lorenz chaotic system global attractive set positive invariant set globally exponential tracking globally exponential synchronization.

Study on Key Issues of the One-step Inverse Method

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武汉理工大学学报 2006年第S1期28卷 116-120页

作者： HUANG Ying 1,2 ,RUAN Yi1,DU Ruxu2 (1.College of Logistic Engineering,wuhan university of technology,wuhan 430070,china 2.department of automation & Computer-Aided Engineering,The Chinese university of Hong Kong,Hong Kong,china) College of Logistic Engineering Wuhan University of TechnologyWuhan 430070China department of automation & Computer-Aided Engineering The Chinese University of Hong KongHong KongChina College of Logistic Engineering Wuhan University of TechnologyWuhan 430070China department of automation & Computer-Aided Engineering The Chinese University of Hong KongHong KongChina

Even though the inverse method is less accurate than that of the incremental one,it has great potential in the conceptual design stage for its less calculation load and quick speed. However,it faces a number of unsolved problems,which limit its application. The first question is how to find a suitable initial solution while the other one is how to deal with the numerical problems caused by the vertical walls. In this paper,new methods have been proposed to solve above two questions. The methods have also been coded and applied to two parts to test its feasibility.

关键词： sheet metal forming inverse method modified arc-length method

Littlewood-Paley operators with variable kernels

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Science china Mathematics 2006年第5期49卷 639-650页

作者： CHEN Jiecheng, DING Yong & FAN Dashan department of Mathematics, Zhejiang university (Xixi campus), Hangzhou 310028, china School of Mathematical Sciences, Beijing Normal university, Beijing 100875, china department of Mathematics, university of Wisconsin-Milwaukee, Milwaukee WI 53201, USA department of Mathematics, Central china Normal university, wuhan 430074, china department of Mathematics Zhejiang University (Xixi Campus) Hangzhou China School of Mathematical Sciences Beijing Normal University Beijing China department of Mathematics University of Wisconsin-Milwaukee Milwaukee USA department of Mathematics Central China Normal University Wuhan China

In this paper we study a certain directional Hilbert transform and the boundedness on some mixed norm spaces. As one of applications, we prove the Lp-boundedness of the Littlewood-Paley operators with variable kernels... 详细信息

关键词： directional Hilbert transform, Sobolev spaces, Littlewood-Paley operator,variable kernel.

Preparation of Cyclodextrin-Based Carbonaceous Catalyst and Its Application in the Esterification

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Journal of wuhan university of technology(Materials Science) 2011年第3期26卷 455-458页

作者：单纯 department of Environmental and Chemical Engineering Shanghai University department of automation Science Guangdong Polytechnic Normal University

A new carbonaceous catalyst with sulfonic acid group （-SO3H） was prepared by incomplete carbonization of β-cyclodextrin followed by *** sulfonated amorphous carbon was characterized by IR,elemental analysis,DSC-TGA and PXRD,and the catalytic activity was investigated to be an efficient catalyst for the esterification reactions with maximum yield of 87%.The sulfonated carbonaceous catalyst was readily separated from the reaction solution and keeps approximately equal catalytic *** results confirm that the active centre is the hydrophilic sulfonic acid functional group in the esterification reactions.

关键词： β-Cyclodextrin carbonization carbonaceous catalyst esterification activity

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基于灰色系统理论的数据挖掘技术

系统工程与电子技术 2004年第2期26卷 184-186页

作者：熊和金陈德军武汉理工大学自动化学院湖北武汉430063 华中科技大学控制科学与工程系湖北武汉430074

利用灰色系统理论是研究贫信息系统分析、建模、预测、决策、控制的有效工具的特性,针对系统样本数据量不大或有残缺,样本数据更新变换快,整体数据规律相当复杂,而在某一时间或空间的数据却有很强的规律性之类的贫信息灰色系统中的数据... 详细信息

利用灰色系统理论是研究贫信息系统分析、建模、预测、决策、控制的有效工具的特性,针对系统样本数据量不大或有残缺,样本数据更新变换快,整体数据规律相当复杂,而在某一时间或空间的数据却有很强的规律性之类的贫信息灰色系统中的数据挖掘课题,探讨了灰色系统理论与技术在数据挖掘中的应用问题,提出了贫信息灰色数据挖掘的灰色关联算法、灰色统计算法、灰色聚类算法、灰色统计聚类算法,并提出了灰色系统数据挖掘的体系结构。

关键词：数据挖掘知识发现灰色系统理论灰色工程数据仓库灰色关联算法灰色统计算法灰色聚类算法灰色统计聚类算法

Non-fragile Controller Design for a Class of Nonlinear Neutral Time-delay System

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Non-fragile Controller Design for a Class of Nonlinear Neutr...

New Method for Non-intrusive Data Extraction and Classification of Residential Appliances

2011 Chinese Control and Decision Conference（CCDC）

作者： Tianqun Xu is with School of Science,wuhan university of technology,wuhan,Hubei,430070 china.Yuepeng Chen is with School of automation,wuhan university of technology,wuhan,Hubei,430070 china.Tianhe Xu is with Geodesy department Xian Research Institute of Surveying and Mapping,Xi''an,710054 china.Yanni Deng is with School of automation,wuhan university of technology,wuhan,Hubei,430070 china.

In this notes,the design problem of non-fragile controller for a class of nonlinear neutral delay system is *** nonlinear parts are assumed to satisfy the bounded condition,and the controller is additive gain *** aim is to design a state feedback non-fragile controller such that,for all nonlinear disturbances,the closed-loop system remains asymptotically stable and cost function value is not more than a specified upper bound.A criterion for the existence of such controller is derived based-on the linear matrix inequality （LMI） approach combined with the Lyapunov method.A parameterized characterization of guaranteed cost controllers is given in terms of the feasible solutions to the certain LMI.A numerical example is given to demonstrate the application of the proposed design approach.

关键词： Neutral system non-fragile controller LMI time-delay

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New Method for Non-intrusive Data Extraction and Classificat...