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4th International Workshop on Advanced Computational Intelligence, IWACI 2011

作者： Xie, Fuqiang Yang, Ye Chang, Songtao Wang, Yongji School of Electric Engineering University of Souch China Hengyang China Beijing Aerospace Automatic Control Institute Beijing China Department of Control Science and Engineering Key Laboratory of Ministry of Education for Image Processing and Intelligent Control Huazhong University of Science and Technology Wuhan China

ISBN: (纸本)9781612843735

Solving the optimal control problem with a free final time, such as suborbital launch vehicle (SLV) trajectory optimization with two control variables and multi-constraints ones based on particle swarm optimization (PSO), the smoothness of control variable can not be satisfied by linear interpolation method. A novel method including some improving strategies based on PSO for trajectory optimization is proposed, named LCPSO which is a kind of Cooperate PSO based on Legendre orthogonal polynomials. An additional control variable is introduced and transcribes the original optimal problem to a problem with fixed final time, and one dimension searching method based on interval analysis is used to optimize the additional control variable. Furthermore, a theorem on how to find the boundaries of the coefficient of polynomials is proved. Compared with basic PSO, LCPSO has traits of lower dimensions and smoother control variable. An example of trajectory optimization shows the effectiveness of the LCPSO algorithm. © 2011 IEEE.

关键词： Aerodynamics

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Data model driven architecture (DMDA)

Data model driven architecture (DMDA)

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4th International Workshop on Advanced Computational Intelligence, IWACI 2011

作者： Chen, Chen Chen, Xueguang Liu, Hong Institute of Systems Engineering Huazhong University of Science and Technology Wuhan 430074 China Key Lab. for Image Processing and Intelligent Control Huazhong University of Science and Technology Wuhan 430074 China

ISBN: (纸本)9781612843735

Based on the current development of Model Driven Architecture (MDA) in Enterprise Information System (EIS), the paper proposes a DMDA, a new development architecture to improve EIS development speed and quality. The basic idea of the DMDA is to take advantage of formal description, decomposition and re-use on EIS development process to let computer understand development demands of developers and then consequently generate some business models having nothing to do with specific technical realization, combine with specific technical basic platform to finally generate the EIS meeting actual demands based on data model. The practice proves the architecture is capable of simplifying EIS development difficulty, expediting application and development speed, improve development quality and achieve the rapid development purpose. © 2011 IEEE.

关键词： Software design

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Design of the emergency satellite commanding and consultation system

Design of the emergency satellite commanding and consultatio...

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2011 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference, CSQRWC 2011

作者： Peng, Wenbiao Liang, Huijun Yi, Qinglin College of Electrical Engineering and Renewable Energy Institute of Intelligent Vision and Image Information China Three Gorges University Hubei 443002 China Research Center of the Geological Disasters Engineering Prevention and Control China Three Gorges University Hubei 443002 China

ISBN: (纸本)9781424497904

In general, emergency satellite commanding and consultation system should include the commanding system, the consultation system, the mobile communication system, the microwave transferring systems and the information processing systems. This paper gives the system design which is a hybrid communication network working as a star network or a building on-demand network. Using of intelligent satellite communication network - Viper sat system, a variety of services working in the field can access into the commanding center network, including telephone switching system, video conference system and integrated services data communications network. The system should not only improve the ability of the rapid response, the commanding and controlling, the dealing with of the emergency events at all levels departments, but also can provide the site information and the decision-making advice timely and safely,, so it is efficient to meet the needs of their work on emergency management. By the way, all the equipment and related integrated products in the system has been tested field in reliability, practicality, portability, and so were able to meet the demand. © 2011 IEEE.

关键词： Mobile telecommunication systems

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Forward simulation of remaining oil exploration in cross-well by time domain electromagnetic method

Forward simulation of remaining oil exploration in cross-wel...

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IEEE International Conference on Communication Software and Networks

作者： Xi-Jin, Song Rui-Rong, Dang Bao-Long, Guo Xue-Long, Wang Key Laboratory of Photoelectric Logging and Detecting of Oil and Gas Ministry of Education Xi'An Shiyou University Xi'an China Institute of Intelligent Control and Image Engineering Xidian University Xi'an China College of Computer Science and Technology Xi'An University of Technology Xi'an China

ISBN: (纸本)9781612844855

Based on electromagnetic field theory, this paper derived the general expressions of time domain responses for cross-well electromagnetic logging. The emission waveform may be chosen as bipolar square wave by calculating the spectrums of three types of transmit signals. And the effects of thickness, magnetic permeability and electrical conductivity of the casing on time domain electromagnetic logging responses were analyzed. The computation results show that the casing change whether thinner or thicker has an obvious effect on the time domain logging responses. The simulation results also indicate the higher the casing electrical conductivity, the lower the response signal amplitude;and the lower the magnetic permeability, the more easy the electromagnetic signals through the casing. Furthermore, the sensitivity analysis of the time domain electromagnetic responses to the formation resistivity indicates that the electromagnetic responses are fairly sensitive to the formation resistivity. This result proved the feasibility and effectiveness of cross-well time domain electromagnetic logging technology applies to the field of oil and gas exploration. © 2011 IEEE.

关键词： Magnetic permeability

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The Analytical Algorithm of Program Quaternion in the Arbitrary Spacecraft Attitude-Adjusting control

The Analytical Algorithm of Program Quaternion in the Arbitr...

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2011 3rd International Asia Conference on Informatics in control, Automation and Robotics(CAR 2011)

作者： Shaobo Ni Jianwu Wu Jiayuan Shan Lei Liu Mao Su School of Aerospace Engineering Beijing Institute of technology Beijing Aerospace Automatic Control Institute Key Laboratory of Education Ministry for Image Processing and Intelligent Control Department of Control Science & Engineering Huazhong University of Science and Technology

The analytical algorithm of program quaternion is studied,aiming at the problem of the arbitrary spacecraft attitude-adjusting *** also provides the analytical constructor method of the program quaternion for any given initial quaternion and angle velocity,terminal quaternion and angle *** advantages of this method are as follows:(1)Good *** of the initial and terminal conditions are arbitrary;(2)Simple *** calculation process only involves the simple algebraic operation;(3)Easy to *** using the program quaternion model,the time consumption in the process of spacecraft attitude adjustment and the maximum angular velocity can be optimized *** to the Mathematical simulation results,the program quaternion tracking can be realized by a simple PD control law.

关键词： Spacecraft Dynamic Modeling Attitude control Quaternion

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Universal image steganalysis against spatial-domain steganography based on energy distribution of singular values

Universal image steganalysis against spatial-domain steganog...

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7th International Conference on Information Technology and Application, ICITA 2011

作者： Shojaei-Hashemi, Anahita Soltanian-Zadeh, Hamid Ghaemmagham, Shahrokh Kamarei, Mahmoud School of Electrical and Computer Engineering College of Engineering University of Tehran Tehran Iran Control and Intelligent Processing Center of Excellence School of Electrical and Computer Engineering University of Tehran Tehran Iran Image Analysis Laboratory Department of Radiology Henry Ford Health System Detroit MI United States Electronics Research Institute Sharif University of Technology Tehran Iran

ISBN: (纸本)9780980326741

A passive image steganalysis method is proposed to universally detect spatial-domain steganography schemes. It is shown to have better performance than universal steganalyzers known to be powerful in spatial domain, including the WFLogSv and the WAM methods. This level of accuracy is the result of improving the WFLogSv steganalyzer by considering a more comprehensive relationship between the singular values of each image block and the linear correlation of the rows and the columns. That is, instead of the closeness of the lower singular values to zero, the energy distribution of the singular values is investigated. An innovative measure is proposed for this investigation, which is inspired from arithmetic mean-geometric mean inequality. Experimental results confirm the supremacy of the proposed steganalysis scheme over its counterparts.

关键词： Singular value decomposition

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Universal steganalysis based on local prediction error in wavelet domain

Universal steganalysis based on local prediction error in wa...

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7th International Conference on intelligent Information Hiding and Multimedia Signal Processing, IIHMSP 2011

作者： Shojaei-Hashemi, Anahita Mehdipour-Ghazi, Mostafa Ghaemmaghami, Shahrokh Soltanian-Zadeh, Hamid School of Electrical and Computer Engineering College of Engineering University of Tehran Tehran Iran Electronics Research Institute Sharif University of Technology Tehran Iran Control and Intelligent Processing Center of Excellence School of Electrical and Computer Engineering University of Tehran Tehran Iran Image Analysis Laboratory Department of Radiology Henry Ford Health System Detroit MI United States

ISBN: (纸本)9780769545172

A passive universal image steganalysis method is proposed that is shown to be of higher detection accuracy than existing truly blind steganalysis methods including Farid's and the WAM. This is achieved by improving some weaknesses of Farid's steganalysis scheme in feature extraction, that is, instead of deriving an over-determined equation system for each sub band of the wavelet decomposition, the sub bands are divided into overlapping blocks and an over-determined equation system is constructed for each block. To guarantee the existence of finite answers, the over-determined equation systems are solved in a way different from Farid's by using Moore-Penrose pseudo-inverse concept. Further improvement to the performance is achieved by adding diagonal directions and increasing the number of moments. The comparative evaluations confirm the superiority of the proposed method over prevalent blind steganalysis schemes. © 2011 IEEE.

关键词： Wavelet decomposition

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On collusion attack for digital fingerprinting

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Journal of Information Hiding and Multimedia Signal Processing 2011年第4期2卷 366-376页

作者： Li, Xin-Wei Guo, Bao-Long Wu, Xian-Xiang Li, Lei-Da Institute of Intelligent Control and Image Engineering Xidian University 2 South Taibai Road Xi'an 710071 China School of Information and Electrical Engineering China University of Mining and Technology Xuzhou 221116 China

Collusion attack is a challenge issue for digital fingerprinting, and it is very beneficial to study for fingerprinting design. Two models for linear and non-linear collu- sion attack are constructed from the angles of owner and colluder in the paper. Through theory and simulation analysis in fingerprints embedding domain and non-embedding do- main some conclusions are obtained: (1) The attack effects in embedding domain and non-embedding domain are same for average collusion attack;(2) The attack effects in embedding domain is stronger than that in non-embedding domain for maximum attack, minimum attack and randneg attack;(3) The attack effects in embedding domain and non-embedding domain are similar for median attack, min-max attack and modneg attack;(4) The two models have the similar attacks effects in embedding domain. We have also studied the relationship between the quality of colluded image and collusion attack. Large experimental results prove the correctness of the received conclusions, which is very helpful for fingerprinting design and system analysis. © 2011 ISSN 2073-4212.

关键词： Digital fingerprinting Embedding domain Linear collusion Non-embedding domain Nonlinear collusion

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Predictive control of Vehicle Based on Echo State Network

Predictive Control of Vehicle Based on Echo State Network

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International Conference on Intelligence Science and Information engineering (ISIE)

作者： Shaobo Ni Lei Liu Zhishen Wang Zirui Wang School of AeroSpace Engineering Beijing Institute of technology Beijing China Key Laboratory of Education Ministry for Image Processing and Intelligent Control Department of Control Science & Engineering Huazhong University of Science and Technology Wuhan China

An Echo State Network (ESN) based predictive control method for aircraft system is proposed to increase the flight quality. Aero craft is a nonlinear and time-varying system and its controllers are usually designed by trajectory linearization method. Furthermore, the predictive controller is designed to adjust the current controlled variables by the trend of output to improve the quick responsiveness and traceability. Then, the stability of the system is proved by Lyapunov function. Finally, the numerical simulation results of step-response and attitude tracking illustrate the robustness and effect of the method.

关键词： Predictive control Aerospace control Training Sparse matrices Neurons Aircraft Mathematical model

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Data Model Driven Architecture (DMDA)

Data Model Driven Architecture (DMDA)

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International Workshop on Advanced Computational Intelligence (IWACI)

作者： Chen Chen Xueguang Chen Hong Liu Institute of Systems Engineering Huazhong University of Science and Technology Wuhan China Key Laboratory for Image Processing and Intelligent control Huazhong University of Science and Technology Wuhan China

关键词： Data models Business Unified modeling language Computational modeling Analytical models Computers

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