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IASTED International Conference on Applied simulation and Modelling, ASM 2011

作者： Ye, Feng Lan, Guo-Xing Cai, Ye-Quan Zhang, Ying-Chao Science and Technology on Complex Systems Simulation Laboratory Post Box. 9702#19 Beijing 100101 China

ISBN: (纸本)9780889868939

The typical operation flow of complex system has analyzed in this paper. The rehearsal model of the complex system based on the principle of Petri Nets has proposed, and illustrated by the case of OODA. The Petri Nets demonstration prototype under a typical scenario of complex system has built. The method of complex system modeling based on Petri Nets is a possible approach to fit in with the needs of constructing a typical rehearsal system of the complex system by existing simulation models (subsystems) in a short time. It meets the requirements of the demonstration research and evaluation mission for the complex system, which carries out in a short-term action cycle and accomplishes the mission in high efficiency.

关键词： Petri nets

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Research on system of systems simulation optimization

Research on system of systems simulation optimization

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IASTED International Conference on Applied simulation and Modelling, ASM 2011

作者： Lan, Guo-Xing Ye, Feng Science and Technology on Complex Systems Simulation Laboratory Post Box. 9702#19 Beijing 100101 China

ISBN: (纸本)9780889868939

Optimization is one of the most important research contents of system of systems (SoS), and computer simulation technology is an effective means to resolving optimization problem. This paper makes further exploration of SoS description and optimization problem, simulation optimization and its development direction. The multilayer optimization to resolving optimization problem of system and hybrid optimization algorithm based on sensitivity analysis and genetic algorithm has proposed. They are used to offer a technological support for SoS optimization problem.

关键词： Sensitivity analysis

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Research on fractional order controller based on best rational approximation approach

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Journal of Convergence Information technology 2012年第4期7卷 50-58页

作者： Zhao, Huimin Nie, Bing Li, Wen Deng, Wu Software Institute Dalian Jiaotong University Dalian 116028 China Key Laboratory of Numerical Simulation in the Sichuan Provincial College Neijiang Normal University Neijiang 641112 China Artificial Intelligence Key Laboratory of Sichuan Province Sichuan University of Science and Engineering Zigong 643000 China State Key Laboratory of Power Transmission Equipment and System Security and New Technology College of Electrical Engineering Chongqing University Chongqing 400044 China Key Laboratory of advanced Design and Intelligent Computing Dalian University Ministry of Education Dalian 116622 China

Introduce the basic concept of best rational approximation and constructing procedure of the best rational approximation function in Laplace domain. By an illustrative example the design method of FOC based on best rational approximation is discussed. The performance comparison of transfer functions between the FOC obtained by best rational approximation method and conventional PID shows that it is effective to apply the method in design of FOC, which can guarantee maximum absolute error of amplitude frequency characteristic of approximation function in a given error tolerance.

关键词： Rational functions

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Lateral jet interaction model identification based on genetic programming

Lateral jet interaction model identification based on geneti...

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3rd International Conference on Artificial Intelligence and Computational Intelligence, AICI 2011

作者： Chen, Shi-Ming Dong, Yun-Feng Wang, Xiao-Lei School of Astronautics Beijing University of Aeronautics and Astronautics Beijing China Science and Technology on Space System Simulation Laboratory Beijing Simulation Center Beijing China

ISBN: (纸本)9783642238802

Precise lateral jet interaction models are required for missiles' blending control strategies. Because of the complicated flow field, the interaction models are multivariable, complex and coupled. Traditional aerodynamics coefficients model identification used Maximum-likelihood estimation to adjust the parameters of the postulation model, but it is not good at dealing with complex nonlinear models. A genetic programming (GP) method is proposed to identify the interaction model, which not only can optimize the parameters, but also can identify the model structure. The interaction model's inputs are altitude, mach number, attack angle and fire number of jets in wind channel experiment results, and its output is interaction force coefficient. The fitness function is root mean square error. Select suitable function set and terminal set for GP, then use GP to evolve model automatically. The identify process with different reproduced probability;crossover probability and mutation probability are compared. Results shows that GP's result error is decrease 30% than multi-variable regression method. © 2011 Springer-Verlag.

关键词： Missiles

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A hybrid vector artificial physics optimization for constrained optimization problems

A hybrid vector artificial physics optimization for constrai...

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1st International Conference on Robot, Vision and Signal Processing, RVSP 2011

作者： Xie, Liping Zeng, Jianchao Complex System and Computational Intelligence Laboratory Taiyuan University of Science and Technology Taiyuan Shanxi 030024 China

ISBN: (纸本)9780769545813

Artificial physics optimization algorithm (APO) is used to solve constrained optimization problem. A n order diagonal matrix of shrinkage coefficient is introduced to ensure that each individual is within the decision space. Multidimensional search method is merged into the vector model of APO to ensure that the moving of the whole population is limited in the feasible region. The simulation results confirm that the performance of the hybrid vector APO with multidimensional search method is effective. © 2011 IEEE.

关键词： Constrained optimization

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A study on the effect of Vmax in Artificial physics optimization algorithm with high dimension

A study on the effect of Vmax in Artificial physics optimiza...

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2011 International Conference of Soft Computing and Pattern Recognition, SoCPaR 2011

作者： Xie, Liping Tan, Ying Zeng, Jianchao Complex System and Computational Intelligence Laboratory Taiyuan University of Science and Technology Taiyuan shanxi 030024 China

ISBN: (纸本)9781457711947

Velocity threshold vmax is an important parameter of Artificial physics optimization. Different from other parameters, it affects the algorithm performance by restricting the moving size and direction of each particle. Because of the complex optimisation problems, the proper vmax setting may provide a reasonable solution within an allowed generation. However, up to now, there are only few scholars who are concerned in this problem. Therefore, in this paper, the authors investigate two selection principles of v max (a canstant vmax and an adaptive vmax) with high dimension on numerical optimisation problems. To make a deep insight, the test suit consists of three different type benchmarks: unimodel, multi-modal functions with a few local optima and multi-modal functions with many local optima. simulation results show an adaptive vmax may generally obtain the satisfied solution within the allowed iterations. © 2011 IEEE.

关键词： Global optimization

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A hybrid vector artificial physics optimization with multi-dimensional search method

A hybrid vector artificial physics optimization with multi-d...

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2011 2nd International Conference on Innovations in Bio-inspired Computing and Applications, IBICA 2011

作者： Xie, Liping Zeng, Jianchao Cai, Xingjuan Complex System and Computational Intelligence Laboratory Taiyuan University of Science and Technology Taiyuan Shanxi 030024 China

ISBN: (纸本)9781457712197

Artificial physics optimization algorithm (APO) is a new swarm intelligence algorithm to solve global optimization problem based on Physicomimetics framework. An n order diagonal matrix of shrinkage coefficient is introduced to ensure that each individual is within the decision space. Multi-dimensional search method is merged into the vector model of APO to improve the local exploitation capability of vector APO. The simulation results confirm that the performance of the hybrid vector APO with multi-dimensional search method is effective. © 2011 IEEE.

关键词： Vectors

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An approach to battlefield data management of targets and environment

An approach to battlefield data management of targets and en...

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2011 International Conference on Information technology, Computer Engineering and Management sciences, ICM 2011

作者： Liang, Yi Xing, Jijuan Company of Postgraduate Academy of Equipment Command and Technology Beijing 101416 China Science and Technology on Complex Systems Simulation Laboratory Beijing 100101 China

ISBN: (纸本)9780769545226

In order to insure the quality of battlefield information guarantee, promote efficiency of data management, and mining these values of data, a data management approach for battlefield data of targets and environment is studied in this paper. Concepts of targets and environment are introduced, these originals of data are discussed and classified, and these characters of data are analyzed. By describing data processing, establishing an organization, grading data qualities, the data of targets and environment is incremented in this processing with a data management standard system of system and the information recommending services base-on knowledge. An example is introduced to illustrate the data management process vividly. Finally the suggestions to improve data management are given. Empirical results show that the approach can insure qualities of information guarantee, promote efficiency of data management and increment data value. By enhancing the data management of targets and environment, costs can be cut down, efficiency can be improved, and resource deployment can be optimized. © 2011 IEEE.

关键词： Information management

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A method of segmenting texture of targets in remote sensing images based on granular computing

A method of segmenting texture of targets in remote sensing ...

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2011 International Conference on Information technology, Computer Engineering and Management sciences, ICM 2011

作者： Liang, Yi Mao, Zhaojun Company of Postgraduate Academy of Equipment Command and Technology Beijing 101416 China Science and Technology on Complex Systems Simulation Laboratory Beijing 100101 China

ISBN: (纸本)9780769545226

In order to solve the aircraft targets segmentation and recognition problem with background interference in remote sensing images, a base-on granular computing method to division texture is used in this paper. By granulating remote sensing images, the gray level co-occurrence matrix and Gabor filter can catch these characters in elementary granules. And these elementary granules are incorporated to a result of texture division in quotient space. For illustration, a remote sensing image with two aircraft targets is utilized to show these steps of segmentation. Empirical results show that the decision rule with highest confidence measure will be used as the final decision rules in the MADA problem with multiple conflicting decision attributes. The base-on granular computing texture characters segmentation method can effectively solve the aircraft targets segmentation and recognition problem with background interference in remote sensing images are solved. © 2011 IEEE.

关键词： Remote sensing

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Research on the estimation and reduction measures of antenna mode RCS of airborne phased array

Research on the estimation and reduction measures of antenna...

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2011 4th IEEE International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, MAPE 2011

作者： Liu, Yun You, Lizhi Aviation Key Laboratory of Science and Technology on Avionics Integrated Sensor System Simulation Radar and Avionics Institute of AVIC Wuxi China

ISBN: (纸本)9781424482665

In this paper, the scattering principium of airborne phased array antenna is discussed, and the antenna mode RCS of the two-dimensional array is estimated. Based on theoretical calculations, broadband matching, incline, manufacturing tolerances and other RCS reduction measures are researched. The results show that these stealth approaches have an obviously effect on the RCS reduction. © 2011 IEEE.

关键词： Antenna arrays Antenna radiation patterns Arrays Phased array RCS reduction measures Radar antennas Reflector antennas Scattering airborne phased array antenna airborne radar antenna mode RCS estimation antenna mode scattering antenna mode scattering antenna phased arrays broadband antennas broadband matching electromagnetic wave scattering manufacturing tolerances phased array radar radar cross-sections reduction two-dimensional array

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