检索结果-内蒙古大学图书馆

An improved particle swarm optimization algorithm for chaotic synchronization based on PID control

Journal of Information and Computational Science 2014年第9期11卷 3177-3186页

作者： Zou, Dexuan Wang, Xin Duan, Na School of Electrical Engineering and Automation Jiangsu Normal University Xuzhou 221116 China Information and Control Engineering Faculty Shenyang Jianzhu University Shenyang 110168 China

In this study, we propose a variant of Particle Swarm Optimization (PSO) algorithm for chaotic synchronization based on PID control. The new method, called Improved Particle Swarm Optimization (IPSO) algorithm employs the global best position to execute a global searching strategy such that the position updating is well finished. In addition, the IPSO introduces a mutation operation in terms of the personal best positions. By combining the global searching strategy and mutation operation, the global searching capacity of the IPSO is enhanced, and it can easily get rid of the local optimums. The performance of the IPSO is investigated on four test examples and its results are compared with those of the PSO. The empirical analysis of the experimental results demonstrates the efficiency of the IPSO. Copyright © 2014 Binary Information Press.

关键词： Three term control systems

来源：评论

学校读者我要写书评

暂无评论

Large-scale assembly of Cu/CuO nanowires for nano-electronic device fabrication

引用

Science China(Technological Sciences) 2014年第4期57卷 734-737页

作者： XU Ke TIAN XiaoJun YU HaiBo YANG Yang ZHOU Lei LIU LianQing State Key Laboratory of Robotics Shenyang Institute of Automation Chinese Academy of Sciences Information & Control Engineering Faculty Shenyang Jianzhu University

To improve the efficiency of nano-electronic device fabrication, a new method named floating electrical potential assembly is proposed to realize large-scale assembly of Cu/CuO nanowires, The simulation of floating electrical potential distribution on the micro-electrode chip is performed by COMSOL software, and the simulation result shows that the coupled electrical poten- tial on the floating drain electrodes is very close to the original electrical potential applied on the gate electrode, whicb means that the method can provide di-electrophoresis （DEP） force for all the electrode pairs at one time, thus realizing large-scale as- sembly at one time. With Cu/CuO nanowires well dispersed and micro-electrode chip fabrication, nanowires assembly experiments are performed and the experimental results show that Cu/CuO nanowires are assembled at hundreds of micro-electrodes pairs at one time, and the success rate of nanowires assembly also reaches 90%.

关键词： large-scale assembly Cu/CuO nanowires floating potential di-electrophoresis

来源：评论

学校读者我要写书评

暂无评论

Increasing energy efficiency of a building with minimal computational demands using model predictive control

Increasing energy efficiency of a building with minimal comp...

引用

Roedunet International Conference (RoEduNet)

作者： Giorgian Neculoiu Valentin Sgarciu Alexandru Viorel Marinescu Mariana Marinescu Faculty of Automatic Control and Computers Politehnica University of Bucharest1 Bucharest Romania Laboratory of Automation and Applied Informatics Technical University of Civil Engineering of Bucharest Bucharest Romania

This work is a aggregated perspective of previous papers studying advanced control strategy applicable in intermittently heated buildings. This strategy mainly aims to optimize the energy efficiency of heating systems taking into consideration the minimization of the needful time and the computational resources necessary to this process. Model Predictive control is the control strategy used in this work and the main purpose (ensuring maximum comfort with minimum energy consumption) is satisfied by using weather forecasts and building occupancy program. Several architectures presented can be used to implement the proposed solution. The main goal is to minimize the computational requirements achieving the best performance. To solve the problems from previous studies, this paper studied the solutions implemented on a single thermal zone and multiple thermal zones.

关键词： Decision support systems

来源：评论

学校读者我要写书评

暂无评论

Lumped Parameter Mass Flow Rate and Pressure control Characteristics Model for High-Speed Pneumatic PWM on/off Valve

引用

Journal of Donghua University(English Edition) 2014年第3期31卷 293-303页

作者：向忠胡旭东刘昊汝晶炜 Faculty of Mechanical Engineering & Automation Zhejiang Sci-Tech University State Key Laboratory of Fluid Power Transmission and Control Zhejiang University

Aiming at solving the problem of strong coupling characteristic of the key parameters of high-speed pneumatic pulse width modulation( PWM) on / off valve, a general lumped parameter mathematical model based on the valves time periods was well developed. With this model,the mass flow rate and dynamic pressure characteristics of constant volumes controlled by high-speed pneumatic PWM on /off valves was well described. A variable flow rate coefficient model was proposed to substitute for the constant one used in most of the prior works to investigate PWM on /off valves' dynamical pressure response, and a formula for disclosing the inherent relationship among the PWM command signal,static mass flow rate,and sonic conductance of the valve was newly ***,an extensive set of analytical experimental comparisons were implemented to verify the validity of the proposed mathematica model. With the proposed model, PWM on /off valves' characteristics,such as mass flow rate,step pressure response of the valve control system,mean pressure and ripple amplitude,not only in the linear range,but also in the nonlinear range can be wel predicted; Good agreement between measured and calculated results was obtained,which proved that the model is helpful for designing a control strategy in a closed loop control system.

关键词： lumped parameter model pneumatic on/off valve pulse width modulation(PWM) mass flow rate pressure characteristic

来源：评论

学校读者我要写书评

暂无评论

Research on vibration characteristics for the system of large pipeline motor and it's fixing base bracket

Research on vibration characteristics for the system of larg...

引用

International Conference on Electrical Machines and Systems (ICEMS)

作者： Quanfeng Li Linhong Li Surong Huang Department of Automation and Control Shanghai University Shanghai China Faculty of Engineering Shanghai Dianji University China Shanghai Electric Group Shanghai Electric Machinery Co. Ltd China

ISBN: (纸本)9781479988068

The vibration problem of the large scale high speed motor itself has been widely researched in the motor product factory, however, the actual vibration is more larger after the installation in engineering spot. This paper is taking the practical problem of western oil power station project as the research background. It is aiming at solving the strong vibration problem of the system of the oil pipeline motors in the west of China. The researching methods of the field experiment and finite element simulation are both used to analysis the characteristics of mode for the fixing base bracket system. The natural frequencies of various structure bases including all-steel, fulfilling-grouting and semi-grouting are analyzed respectively, and the reason of the system over vibration problem has been found out, and it has been verified of the improved scheme of the base system.

关键词： Vibrations Synchronous motors Pipelines Steel Prototypes AC motors Brushless motors

来源：评论

学校读者我要写书评

暂无评论

Stabilizing Transmission Intervals for Networked control Systems with Nonlinear Delay Dynamics

Stabilizing Transmission Intervals for Networked Control Sys...

引用

IEEE Annual Conference on Decision and control

作者： Domagoj Tolic Sandra Hirche Faculty of Electrical Engineering and Computing University of Zagreb Unska 3 10000 Zagreb Croatia Chair of Information-oriented Control Technische Universitat Munchen Arcisstrasse 21 D-80290 Munchen Germany

ISBN: (纸本)9781479978878

In this paper, we consider a nonlinear delay process to be controlled over a communication network in the presence of disturbances and study robustness of the resulting closed-loop system with respect to network-induced phenomena such as sampled, distorted and delayed data as well as scheduling protocols. In particular, we compute the Maximally Allowable Transfer Interval (MATI) for which a prescribed L_p-gain, as a measure of control performance, is attained. The proposed methodology combines impulsive delay system modeling with Lyapunov-Razumikhin techniques to allow for communication delays greater than MATIs. Other salient features of our methodology are the consideration of nonuniform variable delays and employment of model-based estimators to prolong MATIs. The present stability results are provided for the class of Uniformly Globally Exponentially Stable (UGES) scheduling protocols such as Round Robin (RR) and Try-Once-Discard (TOD). Finally, a nonlinear example is provided to demonstrate the benefits of our methodology.

关键词： Networked control systems networks(communications) control systems control performance Induction loop systems nonlinearity delay Delay systems

来源：评论

学校读者我要写书评

暂无评论

26th Annual Computational Neuroscience Meeting (CNS*2017): Part 3 Antwerp, Belgium. 15-20 July 2017 Abstracts

引用

BMC NEUROSCIENCE 2017年第SUPPL 1期18卷 95-176页

作者： [Anonymous] Department of Neuroscience Yale University New Haven CT 06520 USA Department Physiology & Pharmacology SUNY Downstate Brooklyn NY 11203 USA NYU School of Engineering 6 MetroTech Center Brooklyn NY 11201 USA Departament de Matemàtica Aplicada Universitat Politècnica de Catalunya Barcelona 08028 Spain Institut de Neurobiologie de la Méditerrannée (INMED) INSERM UMR901 Aix-Marseille Univ Marseille France Center of Neural Science New York University New York NY USA Aix-Marseille Univ INSERM INS Inst Neurosci Syst Marseille France Laboratoire de Physique Théorique et Modélisation CNRS UMR 8089 Université de Cergy-Pontoise 95300 Cergy-Pontoise Cedex France Department of Mathematics and Computer Science ENSAT Abdelmalek Essaadi’s University Tangier Morocco Laboratory of Natural Computation Department of Information and Electrical Engineering and Applied Mathematics University of Salerno 84084 Fisciano SA Italy Department of Medicine University of Salerno 84083 Lancusi SA Italy Dipartimento di Fisica Università degli Studi Aldo Moro Bari and INFN Sezione Di Bari Italy Data Analysis Department Ghent University Ghent Belgium Coma Science Group University of Liège Liège Belgium Cruces Hospital and Ikerbasque Research Center Bilbao Spain BIOtech Department of Industrial Engineering University of Trento and IRCS-PAT FBK 38010 Trento Italy Department of Data Analysis Ghent University Ghent 9000 Belgium The Wellcome Trust Centre for Neuroimaging University College London London WC1N 3BG UK Department of Electronic Engineering NED University of Engineering and Technology Karachi Pakistan Blue Brain Project École Polytechnique Fédérale de Lausanne Lausanne Switzerland Departement of Mathematics Swansea University Swansea Wales UK Laboratory for Topology and Neuroscience at the Brain Mind Institute École polytechnique fédérale de Lausanne Lausanne Switzerland Institute of Mathematics University of Aberdeen Aberdeen Scotland UK Department of Integrativ

来源：评论

学校读者我要写书评

暂无评论

Experimental Evaluation of Observer-based Throttle Valve control Using Super-Twisting Algorithm

Experimental Evaluation of Observer-based Throttle Valve Con...

引用

European control Conference

作者： Markus Reichhartinger Mohammad Ali Golkani Martin Horn Institute of Automation and Control Faculty of Electrical and Information Engineering Graz University of Technology

ISBN: (纸本)9781467371605

In this paper, an electronic throttle valve system is considered. The mathematical model describing the motion of the valve plate is subject to uncertainties and external disturbances. The throttle plate angle is intended to track given reference profiles. A control scheme consisting of an observer and a state controller, which both are based upon the super-twisting technique, is proposed. Effectiveness and superiority of the approach are illustrated in numerical simulation using a comparison with a classical control approach. The presented feedback loop is implemented in an engine control unit. Results obtained through comprehensive tests on an industrial combustion engine test bench are given.

关键词： Valves Observers Engines Angular velocity Uncertainty Feedback loop Mathematical model

来源：评论

学校读者我要写书评

暂无评论

Algorithm for fast determination of LiFePO4 battery nominal current

Algorithm for fast determination of LiFePO4 battery nominal ...

引用

2014 37th International Convention on Information and Communication Technology, Electronics and Microelectronics, MIPRO 2014

作者： Sirotić, Igor Šunde, Viktor Ban, Željko Faculty of Electrical Engineering and Computing Department of Electric Machines Drives and Automation Zagreb Croatia Faculty of Electrical Engineering and Computing Department of Control and Computing Engineering Zagreb Croatia

ISBN: (纸本)9789532330816

The development of production and increasing usage of light electric vehicles such as electric bicycles and electric scooters entails development of batteries, battery chargers and fast charging algorithms. Batteries with different nominal electrical characteristics and production technologies are currently in use. Among them, lithium-iron batteries are increasingly being used. The differences in basic characteristics of batteries and standardization issues require fast identification of various battery types and adapting of charging algorithms according to nominal current, voltage, capacity and state of charge. This paper describes a method for determining the nominal current for unknown LiFePO4 battery connected to the stationary filling station for charging electric bicycles. A prerequisite for determination of the rated current is identification of current-voltage curve at the moment of connection and identification of the number of cells. The algorithm for determining these parameters is given in the first part of the paper. The second part deals with determination of the nominal current for LiFePO4 battery based on current-voltage response to the selected battery charging algorithm. © 2014 MIPRO.

关键词： Lithium compounds

来源：评论

学校读者我要写书评

暂无评论

Cut-Off solar charge controller as an alternative towards system efficiency optimization

Cut-Off solar charge controller as an alternative towards sy...

引用

2014 IEEE International Conference on Power and Energy, PECon 2014

作者： Sabry, Ahmad H. Almassri, Ahmed M. Wan Hasan, Wan Zuha B Mohd Radzi, Mohd Amran Bin Ab. Kader, Zainal Abidin Bin Shafie, Suhaidi Control and Automation Engineering University Putra Malaysia UPM Serdang Malaysia Electrical and Electronic Engineering Dep. Faculty of Engineering Universiti Putra Malaysia Malaysia

ISBN: (纸本)9781479972975

Based on the concept of optimizing the efficiency of the automated solar system in residential buildings application, this paper proposed a High efficiency solar Cut-Off charge controller as an alternative to the main solar charge controller in most conventional buildings solar system, the idea is to design an electronic circuit with low losses as a compared with the conventional charge controller to be a part of the integrated and automated building solar system, the design has an algorithm based on some environment parameters like sun Irradiance and weather temperature, this algorithm seems to be inversely calculated because its start from the value of full charge battery voltage. A Simulink Matlab simulator is attempted in the simulation phase of this research. The main difference between the method used in the proposed Cut-Off controller and other technique used in the past is that PV array output power is used directly through a bypass MOSFET to charge the battery bank when the voltage of the battery bank at lower level that its maximum while switching on another path when the batteries reaches its full charge value through another MOSFET to transfer this surplus power to what is called as an Auxiliary load, fans or auxiliary battery used for system ventilation or solar tracking to reduce the ambient temperature for the system components, so adding more improvements on system performance, this would reduce the complexity of the system on one hand and produce a competitive efficiency, low cost and can be easily modified on the other hand. © 2014 IEEE.

关键词： controllers

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：