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Predictive control of Vehicle Based on Echo State Network

Predictive Control of Vehicle Based on Echo State Network

引用

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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Improving strategies on PSO for suborbit launch vehicle trajectory optimization

Improving strategies on PSO for suborbit launch vehicle traj...

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International Workshop on Advanced Computational Intelligence (IWACI)

作者： Fuqiang Xie Ye Yang Songtao Chang Yongji Wang School of Electric Engineering University of South 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

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.

关键词： Polynomials Optimization Switches Trajectory Optimal control Vehicles Approximation methods

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Optimization for the directional filter bank of the nonsubsampled contourlet transform

Optimization for the directional filter bank of the nonsubsa...

引用

International Conference on Natural Computation

作者： Yan, Chunman Guo, Baolong Yi, Meng Institute of Intelligent Control and Image Engineering Xidian University Xi'an China

ISBN: (纸本)9781424459612

The contourlet Transform is an efficient directional multiresolution image representation, but it is not shift-invariant. The nonsubsampled contourlet transform (NSCT), is a fully shift-invariant, multiscale, and multidirection expansion that has a fast implementation, but the computational efficiency is lower than the contourlet transform, such an efficient representation has to be obtained by structured transform and fast algorithm. In this paper, we adopt an optimized directional filter bank and embed it into NSCT to pursue the desired speed, sacrificed the PSNR of the reconstructed image, we obtain the obvious increase of processing speed. Experimental results show that the quality of reconstructed image is sufficient for the human visual system (HVS), and the modified NSCT has a speed about several times than the speed of the customary one, this is very valuable for practical applications of the NSCT. © 2010 IEEE.

关键词： Contourlet transform

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RST invariant image watermarking based on invariant contents

RST invariant image watermarking based on invariant contents

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International Conference on Genetic and Evolutionary Computing (ICGEC)

作者： Li, Xin-Wei Guo, Bao-Long Chen, Long Institute of Intelligent Control and Image Engineering Xidian University Xi'an 710071 China

ISBN: (纸本)9780769542812

An image watermarking scheme resisting RST (rotation, scaling, translation) based on RST invariant square region is proposed in the paper. Two SIFT (scale-invariant feature transform) feature points are selected to determine the position, size, direction of the region. The watermark embedding and detection is completed in the square region with quantization, which could guarantee blind detection. A binary image is employed to be the watermark due to the improvement of watermark capacity. Experimental results show that the proposed scheme can effectively resistant geometrical attacks as well as common signal processing. © 2010 IEEE.

关键词： image watermarking

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Three-dimensional analysis on resistance tomography sensors and its application in inspection of milk flow

Three-dimensional analysis on resistance tomography sensors ...

引用

2010 8th IEEE International Conference on control and Automation, ICCA 2010

作者： Pai, Wang Guo, Baolong Li, Nan Institute of Intelligent Control and Image Engineering Xidian University Xi'an 710071 China

ISBN: (纸本)9781424451951

3D simulation of ERT sensor is established with multi-physical coupling software COMSOL and MATLAB7.0, analyze the limitation of ERT system 3D sensor field and deeply study the influence on the established fields by sizes of electrodes and frequency characteristics. Thus, design two kinds of sensors of pointed electrode array and rectangular-shaped electrode array and also carry out comparison test on frequency characteristics during the detection of milk flows. The result shows that increasing width and height of electrodes is favorable for improving uniformity of sensitivity field in a radial and axial distributions. It also shows that increasing area of electrodes can reduce "Contact resistance" and have more stable frequency characteristic, which is good for increasing SNR of ERT system, thereby, providing evidence and convenience for optimization design of sensors and reconstruction of images. © 2010 IEEE.

关键词： Electrodes

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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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International Conference on Communication Software and Networks, ICCSN

作者： Song Xi-Jin Dang Rui-Rong Guo Bao-Long Wang Xue-Long Key Laboratory of photoelectric logging and detecting of oil and gas Ministry of Education Xi'an Shiyou University Xi'an China Institute oflntelligent Control and Image Engineering Xidian University Xi'an China College of Computer Science and Technology Xi'an University of Technology Xi'an China

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.

关键词： Permeability measurement Conductivity Argon Time domain analysis Sensitivity Geology

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Novel image retrieval method based on interest points

Novel image retrieval method based on interest points

引用

2010 3rd International Congress on image and Signal Processing, CISP 2010

作者： Meng, Fanjie Guo, Baolong Fang, Yiqi Institute of Intelligent Control and Image Engineering Xidian University Xi'an China Xi'an Electronic Engineering Research Institute Xi'an China

ISBN: (纸本)9781424465149

Traditional interest points based image retrieval methods employed local features of interest points to describe image. The difference between local areas of interest points and the region of interest limited the retrieval accuracy. Considering the shape characteristic of interest points, this paper presented a new image retrieval method based on region of interest determined by interest points. Firstly, interest points were detected by tracking wavelet coefficients of different scales. Secondly, the convex hull of interest points was calculated to extract the region of interest in the image. Then color and shape features of the region were used to describe an image. Finally, the weighted feature distance was used to define the similarity between two images. With robustness to image rotation, translation and scale, the method makes the retrieval implementation at the object level and avoids the shortcoming of traditional methods. Lots of experiments based on an image database containing 1100 images show that the method improves the average retrieval precision over 11.1 percent, compared with other interest points based retrieval methods. ©2010 IEEE.

关键词： image retrieval

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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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International Conference on intelligent Information Hiding and Multimedia Signal Processing (IIHMSP)

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

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.

关键词： Equations Mathematical model Payloads Transform coding Correlation Educational institutions Reliability

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PARTICLE SWARM OPTIMIZATION（PSO）OF POWER ALLOCATION IN COGNITIVE RADIO SYSTEMS WITH INTERFERENCE CONSTRAINTS

PARTICLE SWARM OPTIMIZATION（PSO）OF POWER ALLOCATION IN COG...

引用

2011 4th IEEE International Conference on Broadband Network and Multimedia Technology

作者： Saeed Motiian Mohammad Aghababaie Hamid Soltanian-Zadeh Control and Intelligent Processing Center of Excellence School of Electrical and Computer Engineering Colleague of EngineeringUniversity of TehranTehran 14399-57131Iran School of Cognitive Sciences Institute for Research in Fundamental Sciences(IPM)Tehran 19548-56316 Iran Image Analysis Laboratory Radiology DepartmentHenry Ford HospitalDetroitMichigan 48202USA

Cognitive radio is used for enhancement of spectrum *** many works have been accomplished on the power allocation of cognitive radio,limited efforts have considered evolutionary *** this paper,we study this problem in the cognitive radio networks where interference constraints are defined for protection of quality of service（QoS）for both primary and secondary *** defined as functions of the signal-to-interference-plus-noise ratio（SINR） are matched for each secondary user which meets Nash’s *** general,the region of utilities that meets the constraints is *** is possible to make simplifications,generate a convex region,and then use common convex optimization approaches to obtain a ***,Particle Swarm Optimization（PSO）does not need such simplifications and thus its results are superior to those of the convex optimization *** is an evolutionary algorithm based on social intelligence,utilized in many optimization *** is a global optimizations algorithm that does not require the objective function be differentiable as required in classic optimization methods.

关键词： Cognitive radio Power allocation Particle Swarm Optimization（PSO）.

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Optimization for the directional filter bank of the nonsubsampled contourlet transform

Optimization for the directional filter bank of the nonsubsa...

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International Conference on Natural Computation (ICNC)

作者： Chunman Yan Baolong Guo Meng Yi Institute of Intelligent Control and Image Engineering Xidian University Xi'an China

关键词： Filter bank image reconstruction Transforms PSNR Filtering theory Frequency response

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