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Class of GA-RBF neural network control for the BOF steelmaking static model

Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast university (Natural science Edition) 2005年第SUPPL.期35卷 90-94页

作者： Wang, Jianhui Xu, Lin Fang, Xiaoke Gu, Shusheng Faculty of Information Science and Engineering Northeastern University Shenyang 110004 China

The modeling and control problems of basic oxygen furnace (BOF) steelmaking process with non-linearity, large time-delay, uncertainty and complexity are discussed. Considering the problem of poor effect and precision of the BOF steelmaking control, a radial base function (RBF) neural network based on hybrid coding genetic algorithm (GA) is presented combining with characteristic of RBF neural network. The structure and parameter of neural network is optimized by the proposed method, which is used to control the BOF steel-making static model. The simulation results show that the new method can improve the on-line adjustment and self-learning capacity compared with the traditional methods. The GA-RBF neural network control is an effective method to improve the adaptability and practicability of BOF steelmaking control.

关键词： Steelmaking

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Multi-service networks: flow configuration, pricing and incentive Stackelberg strategies

Multi-service networks: flow configuration, pricing and ince...

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International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Service (TELSIKS)

作者： G.M. Dimirovski Yuan-Wei Jing K. Sohraby Faculty of Electrical Engineering SS Cyril and Methodius University Skopje Macedonia Department of Computer Engineering Dogus University Istanbul Turkey School of Information Science and Engineering Northeastern University Shenyang Liaoning China Department of Computer Science Telecommunications University of Missouri Kansas City Kansas City MO USA

High-speed communication networks, such as B-ISDN and Internet, allow several types of network traffic to coexist in the same transmission medium and belong to the category of multi-service networks. Several new results on flow configuration, pricing and routing are presented in addition to overviews of relevant previous works. These derived by making use of the concepts Nash equilibrium, Pareto optimality and Stackelberg strategies borrowed from game theory. These are highlighted by means of illustrative examples. It is claimed the control-theoretic view on incentives in the theory of non-cooperative games provides for tools to solve various control and management problems in high-speed communication networks hence many QoS problems too.

关键词： Pricing Telecommunication control IP networks Communication system control Communication networks Nash equilibrium Communication system traffic control B-ISDN Electronic mail Game theory

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CHANNEL BORROWING PROJECT BASED ON SURPLUS VALUE

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IFAC Proceedings Volumes 2005年第1期38卷 18-22页

作者： Hui Zeng Yuanwei JING Georgi M. Dimirovski Northeastern University Faculty of Information Science and Engineering Shenyang Liaoning 110004 P.R. of China Dogus University of Istanbul Faculty of Engineering Computer Engg. Dept. Acibadem Zeamet Sk. 21 Kadikoy TR-34722 Istanbul Rep. of Turkey Fax: +90-216-327-9631 Tel: +90-327-1104 SS Cyril and Methodius University Faculty of Electrical Engineering Skopje MK-1000 Rep. of Macedonia

The problem of channel choice is investigated from the point of view of the users' benefit function and a novel solution is proposed. When users possess a channel, the minimum-lending-priority channel is assigned from nominal channel in one's own cell firstly. If there is no vacancy, it is borrowed from the neighborhood cells. When users release channel, the minimum cost function channel is chosen. Nash equilibrium and Stackelberg strategy of the game theory are employed to lead the users to choose the maximal surplus value scheme. This decision and control scheme can not only enhance channel utilization and reduce the blocking rate, but also guarantee the satisfied surplus value. Simulation results are given to illustrate the proposed method.

关键词： Communication systems channel borrowing quality of service surplus value game theory incentives

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Application of STD bus industry control machine in the process control

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Shenyang Jianzhu Daxue Xuebao (Ziran Kexue Ban)/Journal of Shenyang Jianzhu university (Natural science) 2005年第5期21卷 573-576页

作者： Li, Jie-Jia Liu, Guo-Huai Chen, Zhong-Tang Li, Cai-Wei Faculty of Information Science and Engineering Northeastern University Shenyang 110006 China School of Information and Control Engineering Shenyang Jianzhu University Shenyang 110168 China School of Science Shenyang Jianzhu University Shenyang 110168 China

In order to reduce the strong interference of aluminum electrolysis process, STD bus industry control machine which has strong anti-jamming ability is used as control host computer to improve control capability. Modularization and combination are applied in the hardware of the control system and the design principle of structure and the modularization are used in the software design. Advanced control idea and different control tactics are adopted in the system, based on the different working state of electrolysis trough to make sure that the electrolysis trough is at its best working state. The system software programs work with VC, and have several characters such as extension and good maintenance. The system has strong dependability and anti-jamming ability, convenient maintenance, good dynamic capability and running effect, and high precision of stabilization. Aiming at the complicated process control especially in the great disturbing producing course, STD bus industry control machine which has strong application can improve the control effect.

关键词： Control systems

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REDUCED-ORDER H ∞ CONTROLLERS BASED ON IMPROVED GENETIC ALGORITHM

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IFAC Proceedings Volumes 2005年第1期38卷 7-11页

作者： Yuanwei Jing Wei Pan Georigi M. Dimirovski Northeastern University Faculty of Information Science and Engineering Shenyang Liaoning 110004 P.R. of China Tel:+86-024-83684583 Shenyang College of Artillery Department of Electric Detection Shenyang Liaoning 110162 P.R. of China Tel:+86-024-83684583 Tel:+86-024-83674297 Dogus University of Istanbul Faculty of Engineering Computer Engg. Dept. Acibadem Zeamet SK. 21 Kadikoy TR-347222 Istanbul Rep. of Turkey Fax:+90-216-327-9631 Tel:+90-327-1104 SS Cyril and Methodius University Faculty of Electrical Engineering Skopje MK-1000 Rep. of Macedonia

An approach of reduced-order H ∞ controller for a class of linear continuous dynamic systems is presented based on Genetic Algorithm. Necessary and sufficient conditions are given, in terms of linear matrix inequality for the existence of controller. A rank condition is changed to object function of genetic algorithm(GA). The minimum order n k of the controller and a corresponding parameter pair ( X,Y ) of positive definite matrix are obtained by means of searching the object function. And then the reduced-order H ∞ controllers are constructed. In this paper, the code is float, the selection operator is rank-based fitness assignment and elitist model, the crossover operator is improved real cross, the mutation operator is real mutation. The simulation results show that the controller has the same control effect as all-order H ∞ controllers based on MATLAB.

关键词： Improved Genetic Algorithm Linear Matrix Inequality (LMI) Reduced-order H ∞ controllers All-order H ∞ controllers float code

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A new method on robust connective stability analysis for a class of interconnected power systems

A new method on robust connective stability analysis for a c...

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8th International Conference on Control, Automation, robotics and Vision (ICARCV)

作者： Li, Xiaohua Chen, Xue-Bo Jing, Yuanwei Faculty of Information Science and Engineering Northeastern University Shenyang 110004 China School of Electronic and Information Engineering Anshan University of Science and Technology Anshan 114044 China

ISBN: (纸本)0780386531

The problem of robust connective stabilities is considered in this paper for a class of large-scale uncertain interconnected power systems in the case of uncertain structural reconfigurations. Robust connective stability is defined based on the interconnected matrix and the load normalization factor uncertainties of power systems. A new analysis method with a robust degree is presented to establish a sufficient condition of connective stability for the system and the robustness bound for uncertainty parameters, by using the property of norms, eigenvalues and global parameters of the system matrices. The proposed method is applied to a two-area power system, and it shows the effectiveness of given conditions. ©2004 IEEE.

关键词： Electric power system interconnection

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A novel design of fuzzy tracking control for nonlinear time-delay systems

A novel design of fuzzy tracking control for nonlinear time-...

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Soft Computing with Industrial Applications - International Symposium on Soft Computing for Industry, ISSCI - Sixth Biannual World Automation Congress, WAC 2004

作者： Wei, Xin-Jiang Jing, Yuan-Wei Dimirovski, Georgi M. Northeastern University School of Information Science and Engineering Shenyang 111004 China Dogus University Faculty of Engineering 34722 Istanbul Turkey SS Cyril and Methodius University Faculty of Electrical Engineering 1000 Skopje Mk

ISBN: (纸本)1889335231

A robust tracking control technique for nonlinear time-delay systems based on fuzzy T-S model is developed. Fuzzy T-S model with parametric uncertainties is employed to represent a nonlinear time-delay system of the plant to be controlled. The aim of the control design is to make the tracking error as small as possible for all bounded reference inputs and to guarantee H ∞ performance of the control system. The proposed tracking control design has the advantage that only a simple fuzzy controller is used within an approach without employing feedback linearization and a complicated adaptive scheme. By means of the proposed method, the fuzzy tracking control design problem is parameterized in terms of a linear matrix inequality problem. The linear matrix inequality problem is then solved efficiently by using a convex optimization technique. Simulation example is given to test the validity and efficiency of the proposed method.

关键词： Time varying control systems

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Robust adaptive fuzzy controller for nonlinear systems based on approximation errors

Robust adaptive fuzzy controller for nonlinear systems based...

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American Control Conference (ACC)

作者： Xin-jiang Wei Yuan-wei Jing Faculty of Information Science and Engineering Northeastern University Shenyang China

A stable adaptive fuzzy control method is proposed for single input and single output nonlinear systems. This method needs not the assumption that the state variables need full observability. And the state variables are estimated by designing an observer. These unknown nonlinearities are approximated by the fuzzy systems. The key assumption is that the approximation errors satisfy certain bounding conditions. The Lyapunov synthesis approach is used to analyse the fuzzy system to obtain the corresponding parameters adaptive laws. The overall control system guarantees that the tracking error converges into a small neighborhood of zero and that all signals involved are uniformly bounded. Simulation results show the validity and efficiency of the proposed method.

关键词： Robust control Programmable control Adaptive control Fuzzy control Fuzzy systems Nonlinear control systems Control systems Nonlinear systems Approximation error Observability

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Stability analysis for circulant systems and switched circulant systems

Stability analysis for circulant systems and switched circul...

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IEEE Conference on Decision and Control

作者： Jian-hua Li Sheng-zhi Zhao Jun Zhao Yan-ping Li Faculty of School of Information Science and Engineering Northeastern University Shenyang China

ISBN: (纸本)0780386825

Structural features of circulant matrices are utilized to study stabilities of circulant systems in this paper. They are that a necessary and sufficient condition for asymptotic stability of circulant systems is given; when systems contain uncertain circulant parameters, a robust stable region is determined. Besides, we present a switched circulant system model and a nonlinear circulant system model. For the former, we explore a necessary and sufficient condition for asymptotic stability under arbitrary switching laws with a common quadratic Lyapunov function constructed, and for the latter, we find out a sufficient condition for locally asymptotically stability at the origin. Finally, simulation examples illustrate the main results of this paper.

关键词： Stability analysis Sufficient conditions Asymptotic stability Lyapunov method Power system simulation Power system control Control systems Robustness Eigenvalues and eigenfunctions Robust stability

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The study on control strategy of nonlinear systems based on neural networks

The study on control strategy of nonlinear systems based on ...

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World Congress on Intelligent Control and Automation (WCICA)

作者： Yanqiu Wang Shusheng Gu Jianhui Wang Liyan Lian Information Science and Engineering Faculty Northeastern University Shenyang China Information Science and Engineering Faculty Liaoning Institute of Technology Jinzhou China

Based on the Lyapunov function and the approximation capability of neural networks, a design scheme of BP neural networks for a class of nonlinear systems is proposed in this paper. The scheme guarantees the stability... 详细信息

ISBN: (纸本)0780382730

关键词： Nonlinear control systems Control systems Nonlinear systems Neural networks Robust stability Information science Lyapunov method

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