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12th Annual Genetic and Evolutionary Computation Conference, GECCO-2010

作者： Melkozerov, Alexander Beyer, Hans-Georg Department of Television and Control Tomsk State University of Control Systems and Radioelectronics Lenin ave. 40 634050 Tomsk Russia Research Center Process and Product Engineering Department of Computer Science Vorarlberg University of Applied Sciences Hochschulstr. 1 A-6850 Dornbirn Austria

ISBN: (纸本)9781450300728

In this paper, first results on the analysis of self-adaptive evolution strategies (ES) with intermediate multirecombination on the elliptic model are presented. Equations describing the ES behavior on the ellipsoid will be derived using a deterministic approach and experimentally verified. A relationship between newly obtained formulae for the elliptic model and previous theoretical results will be discussed. Copyright 2010 ACM.

关键词： Evolutionary algorithms

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A Comparison of Arithmetic Operations for Dynamic process Optimization Approach

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Chinese Journal of Chemical engineering 2010年第1期18卷 80-85页

作者：洪伟荣谭鹏程王树青 Pu Li Institute of Process Equipment Zhejiang University Hangzhou 310027 China Institute of Cyber-System and Control State Key Lab of Control Technology Zhejiang University Hangzhou310027 China Institute of Automation and Systems Engineering Ilmenau University of Technology Ilmenau 98684 Germany

A comparison of arithmetic operations of two dynamic process optimization approaches called quasi-sequential approach and reduced Sequential Quadratic Programming(rSQP)simultaneous approach with respect to equality constrained optimization problems is *** the detail comparison of arithmetic operations,it is concluded that the average iteration number within differential algebraic equations(DAEs)integration of quasi-sequential approach could be regarded as a *** formula is given to calculate the threshold value of average iteration *** the average iteration number is less than the threshold value,quasi-sequential approach takes advantage of rSQP simultaneous approach which is more suitable *** optimal control problems are given to demonstrate the usage of threshold *** optimal control problems whose objective is to stay near desired operating point,the iteration number is usually ***,quasi-sequential approach seems more suitable for such problems.

关键词： dynamic optimization arithmetic operation comparison quasi-sequential approach simultaneous approach

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A GA-Optimised Ensemble Neural Network Model For Charpy Impact Energy Predictions

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IFAC Proceedings Volumes 2010年第9期43卷 62-67页

作者： Mahdi Mahfouf Yong Yao Yang Institute for Microstructural and Mechanical Process Engineering: The University of Sheffield Department of Automatic Control and Systems Engineering The University of Sheffield Mappin Street Sheffield S1 3JD UK

An ensemble modelling strategy, which is based on the genetic algorithm neural network (GA-NN) optimisation, is developed in this paper. A diversity index, defined by the dissimilarity between the current neural network (NN) and the set of existing NNs, is first introduced to facilitate the qualification of the current NN for being included in the ensemble network. A fitness-weighted assemble scheme is then proposed to form the GA-NN ensemble model. The unique advantage of this ensemble modelling scheme is its high efficiency, thanks to the full exploitation of information generated during the GA-NN optimisation. Preliminary results obtained for the prediction of the Charpy impact energy of heat-treated steel are promising, with the model performance being significantly improved as compared to previous modelling results.

关键词： Neural networks Genetic algorithms ensemble modelling Charpy impact energy Mechanical properties

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Service-orientation on behalf of self-configuration for the automation environment

Service-orientation on behalf of self-configuration for the ...

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Annual Conference of Industrial Electronics Society

作者： Henning Mersch Ulrich Epple Christian Kleegrewe Chair for Process Control Engineering RWTH Aachen University Aachen Germany Corporate Technology Intelligent Autonomous Systems Siemens AG Munich Germany

On current automation systems a device failure might lead to significant down times of a plant as well as man power to replace and - more important - to setup the replacement device. Since the physical replacement can't be circumvented, the setup procedure could be automatized as much as possible. This paper shows an approach based on a new automation system designed as a service-oriented architecture (SOA). Advantages of this service-orientation for the automation environment are described in detail. The presented choreography of services yields to a flexible, dynamic and scalable system like it is well known for today's distributed, information technology systems - e.g. grid computing. This approach is applied to the self-configuration scenario as a demonstration of the benefits and chances, which could be achieved by modeling automation systems based on the SOA principle. A prototype realizes the presented service-choreography using real-world's automation components.

关键词： Automation Service oriented architecture Prototypes Sensors Valves Memory

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The Optimization and Integration of the Transportation and Inventory Cost Based on Time in Supply Chain Logistics System

The Optimization and Integration of the Transportation and I...

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International Conference on Logistics engineering and Intelligent Transportation systems (LEITS)

作者： Yongfei Li Qin Su Tongzheng Li School of Management State Key Laboratory for Manufacturing Systems Engineering The Key Laboratory of the Ministry of Education for Process Control & Efficiency Engineering Xi''an Jiaotong University Xi'an China

This paper puts forth a model of the transportation and inventory integration and optimization problem based on system and optimal theory which we take into account the antinomy relationship of transportation and inventory and the antinomy relationship of inventory and stock-out in supply chain logistics system. We consider that the resources available and the total time of inventory and transportation are *** the transportation process, transportation cost, transportation time and transportation capacity may vary between the two adjacent nodes for the reason of the transfer among various transportation modes. When the mode of the transportation is changed, we need consider the transshipment time and transshipment *** issue is a multi-transportation option network question under the normal distribution of the minimum total cost which consists of transportation cost, inventory cost, stock-out cost and time cost. In this paper, we comparatively study and specifically calculate the minimum total transportation and inventory cost in several different cases. Our paper shows that the result is not only more reasonable and effective than other models which can be seen in the appendix but also more in line with the actual situation of the supply chain logistics system. We can get our purpose that we may have a certain referential significance to reduce the total cost and raise the total profit of the supply chain logistics system.

关键词： Transportation Supply chains Cities and towns Optimization Transforms Mathematical model

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Closed-loop identification, diagnosis and retuning of oscillatory PID control loops in chemical processes

Closed-loop identification, diagnosis and retuning of oscill...

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IEEE Conference on control Technology and Applications (CCTA)

作者： Hiroya Seki Takashi Shigemasa Process Systems Engineering Division of Chemical Resources Laboratory Tokyo Institute of Technology Yokohama Japan Toshiba Mitsubishi Electric Industrial Systems Corporation Minato Tokyo Japan

The integrated procedure for closed-loop identification and retuning of poorly tuned oscillatory PID control loops is introduced. A process model is identified by comparing time series data of the closed-loops for two different parameter settings, without giving any external perturbation to the operating process. control parameter calculation is done based on the classical loop-shaping approach. Two case studies are performed on a simulated large scale chemical plant to discuss applicability of the proposed procedure.

关键词： Transfer functions Oscillators process control Time series analysis Time frequency analysis Tuning

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THD reduction with grid synchronized inverter’s power injection of renewable sources

THD reduction with grid synchronized inverter’s power injec...

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International Symposium on Power Electronics, Electrical Drives, Automation and Motion, SPEEDAM

作者： Péter Görbe Attila Magyar Katalin M. Hangos Department of Electrical Engineering and Information Systems University of Pannonia Veszprém Hungary Process Control Research Group Computer and Automation Research Institute Budapest Hungary

A control method for small domestic power plants using renewable energy is described in this paper. This method is not only capable of optimizing the working point of the plant but also implements active power factor correction and lowers the extant harmonic distortion in the line. The novel element in the proposed complex controller structure is the upper harmonic controller that minimizes the amplitudes of the 3rd, 5th 7th, 9th, and the 11th upper harmonic component in the output voltage. The proposed controller has been investigated by simulation in Matlab environment, and as a result, substantial improvement of the output voltage and current waveform could be achieved. Robustness of the method against nonlinear loads has also been tested.

关键词： Power factor correction Costs Power generation Voltage control Harmonic distortion Robustness Nonlinear distortion Solar power generation Power supplies Inverters

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A Hierarchical Image Annotation Method Based on SVM and Semi-supervised EM

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自动化学报 2010年第7期36卷 960-967页

作者： GAO Yan-Yu YIN Yi-Xin UOZUMI Takashi School of Information Engineering University of Science and Technology Beijing Beijing 100083 P.R.China Key Laboratory of Advanced Control of Iron and Steel Process (Ministry of Education) University of Science and Technology Beijing Beijing 100083 P. R. China Department of Computer Science and Systems Engineering Muroran Institute of Technology Muroran 050- 8585 Japan

Automatic image annotation, which aims at automatically identifying and then assigning semantic keywords to the meaningful objects in a digital image, is not a very difficult task for human but has been regarded as a difficult and challenging problem to machines. In this paper, we present a hierarchical annotation scheme considering that generally human s visual identification to a scenery object is a rough-to-fine hierarchical process. First, the input image is segmented into multiple regions and each segmented region is roughly labeled with a general keyword using the multi-classification support vector machine. Since the results of rough annotation affect fine annotation directly, we construct the statistical contextual relationship to revise the improper labels and improve the accuracy of rough annotation. To obtain reasonable fine annotation for those roughly classified regions, we propose an active semi-supervised expectation-maximization algorithm, which can not only find the representative pattern of each fine class but also classify the roughly labeled regions into corresponded fine classes. Finally, the contextual relationship is applied again to revise the improper fine labels. To illustrate the effectiveness of the presented approaches, a prototype image annotation system is developed, the preliminary results of which showed that the hierarchical annotation scheme is effective.

关键词：数字图像自动化系统准确性意义图像标注

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Dynamic modeling and model analysis of a large industrial synchronous generator

Dynamic modeling and model analysis of a large industrial sy...

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International Conference on Applied Electronics, AE

作者： Attila Fodor Attila Magyar Katalin M. Hangos Department of Electrical Engineering and Information Systems University of Pannonia Veszprem Hungary Process Control Research Group Computer and Automation Research Institute Hungarian Academy of Sciences (ATOMKI) Budapest Hungary

A simple dynamic model of an industrial size synchronous generator operating in a nuclear power plant is developed in this paper based on first engineering principles. The constructed state-space model consists of a nonlinear state equation and a bi-linear output equation. It has been shown that the model is locally asymptotically stable with parameters obtained from the literature for a similar generator. The effect of load disturbances on the partially controlled generator has been analyzed by simulation using a traditional PI controller. It has been found that the controlled system is stable and can follow the set-point changes in the effective power well. The disturbance rejection of the controller is also satisfactory.

关键词： Mathematical model Equations Synchronous generators Torque Windings Rotors

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Absolute stability of Lur'e singularly perturbed systems with multiple nonlinearities

Absolute stability of Lur'e singularly perturbed systems wit...

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作者： Yang, Chunyu Zhang, Qingling Chou, Jyh-Horng Zhang, Yingwei Key Laboratory of Integrated Automation of Process Industry Ministry of Education Northeastern University Shenyang 110004 China Institute of Systems Science Northeastern University Shenyang 110004 China Institute of System Information and Control Engineering National Kaohsiung First University of Science and Technology I University Road Yuanchau Kaohsiung 824 Taiwan

ISBN: (纸本)9781424474264

This paper investigates the absolute stability problem for Lur'e singularly perturbed systems with multiple nonlinearities. The objective is to determine if the system is absolutely stable for any Ε ∈ (0, Ε0], where Ε denotes the perturbation parameter and Ε0 is a pre-defined positive scalar. Firstly, an Ε-dependent Lyapunov function of Lur'e-postnikov form is constructed. Then, a stability criterion expressed in terms of Ε-independent linear matrix inequalities (LMIs) is derived. Finally, an example is given to show the feasibility and effectiveness of the obtained method. © 2010 AACC.

关键词： Stability criteria

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