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In order to improve the global search ability and the convergence speed of the Artificial Fish Swarm Algorithm (AFSA), a novel Quantum Artificial Fish Swarm Algorithm (QAFSA) which is based on the concepts and principles of quantum computing, such as the quantum bit and quantum gate is proposed in this paper. The position of the Artificial Fish (AF) is encoded by the angle in [0, 2π] based on the...
Considering the active power loss and voltage deviation, a Multi-objective Particle Swarm Optimization Algorithm (MOPSO) is presented for power system reactive power dispatch. MOPSO incorporates non-dominated sorting, crowding distance and a special mutation operation into particle swarm optimization to enhance the exploratory capability of the algorithm and improve the diversity of the Pareto solutions...
Invasive weed optimization, which is inspired from the invasive habits of growth of weeds in nature, is a population-based intelligence algorithm. In this paper, we present invasive weed optimization with crossover operation combining the idea of the invasive weed with concepts from evolutionary algorithms. By applying the crossover operation in invasive weed optimization, it not only discourages...
Efficient and reliable operation is the main requirement of the modern power plant, hence it's significant that the boiler tube leakage source is localized precisely. The four-element acoustic array was exploited in the furnace, a set of hyperboloidal equations are established and the sensors distributed for capture the leakage signal is given. In order to avoiding initial guess and distant source...
Vehicle axle structural design and optimization is an important part of the vehicle development process. Its strength is directly related to vehicle safe under impact. The design should consider the integrity, achieve the same database of design and analysis of the structural data, The parameters model of ATV's axle is set up based on the seamless integration technique of all the module of Pro/E platform,...
A new method using potential transformers to catch travelling waves is proposed to solve the problem of catching travelling wave signals difficultly in terminal of feeder. Travelling waves transform characteristic of potential transformers is studied. The paper briefly analyses basic characteristics of travelling waves generated by fault and confirms its selected frequency band. Then the demands to...
In this paper, we propose a new algorithm for optimizing surface texture mosaics when texturing 3D model reconstructed from multi-views of objects from real world. We start with the 3D geometry acquired by structure from motion (SFM) approach. Then, the photographic images for acquiring 3D structure are used as texture data and mapped precisely on the surface. Inspired by law of Matthew Effects, we...
As a signal analysis and processing method, wavelet transform (WT) plays an important role in almost all the areas in engineering today. However, compared to other traditional orthogonal transforms, such as DFT and DCT. The usually used fast wavelet transform (FWT) has its inconvenience in application. One frequently met problem is that FWT is rarely realized in the form of linear transformation by...
The basic theories of compressed sensing (CS) turn around the sampling and reconstruction of 1-D signals. To deal with 2-D signals (images), the conventional treatment is to convert them into1-D vectors. This has drawbacks, including huge memory demands and difficulties in the design and calibration of the optical imaging systems. As a result, in 2009 some researchers proposed the concept of compressed...
Synthesize a novel scene or object from a given image is widely recognized to be important for more and more lifestyle applications, especially in the traffic-based application, such as synthesis of shadow, snow and fog. In this paper, we address the problem of synthesize novel images. The project aims at developing algorithms and a system to 1) add virtual object to an image seamlessly and 2) change...
In this paper, an intelligent control scheme based on remote gaze tracking is proposed. First, the eye-moving video of the user is captured by ordinary resolution camera under the illumination of near infrared light sources, then the images of the eye region and the pupil region are extracted by processing the video in real time. We process the image of the pupil region, and get the coordinates of...
In this paper, a video watermarking scheme is proposed, which has high capacity and is robust against transcoding between MPEG2, MPEG4 and H.264. In the proposed scheme, the watermark is embedded into the DCT blocks and the frames in the same GOP are watermarked with the same watermark. During the embedding, the spatial relationship of DCT coefficient between an 8*8 block and its four 4*4 sub-blocks...
Owing to the original Ott-Grebogi-Yorke(OGY) method can only be applied to the discrete dynamical systems or continuous dynamical systems which can be described by Poincare mapping, a novel method for controlling chaos is proposed by resorting to echo state network. The network was trained by the input and output sample which were generated by OGY method. The chaos controller can drive the chaotic...
Because of strong coupling, nonlinear, and time-varying characteristics, it is difficult to control complex spacecraft. By means of combining with controlled object dynamics and performance requirements, characteristic modeling and control approach is an effective way to solve this problem. Aimed at the flexible satellites described by using characteristic modeling approach, with the help of fuzzy...
In order to improve randomicity of chaos system, A novel switched chaotic model is presented based on Lorenz system by modifying the third equation's product. The system consists of three chaotic subsystems and can change its behavior random among of the two or three subsystems via selector. The switchable system makes up of four switchable chaos subsystems. Some of its basic dynamical properties...
A novel hypderchaotic system with two larger Lyapunov exponents and wider parameter range is built based on the three-order Qi chaotic system. The properties of this system are studied detailedly, such as the balance point and stability, Lyapunov exponent spectrum and the fractal dimension, and the phase portraits of hyperchaotic attractor. A practical circuit is designed to realize the system by...
This paper presents a grey predictive control method for a class of nonlinear systems with unknown input delay. By using BP neural network, the unknown input delay is identified firstly. The system output is then estimated by the grey predictive algorithm. The output feedback control is fulfilled by PID algorithm which is used to tune its three parameters. By means of combining grey predictive algorithm...
The ability of Vertical and/or Short Take-Off and Landing is the objective of advanced fighter and shipboard fighter. In this paper we proposed a prototype of tailless configured STOVL aerial vehicle. Based on which, the mathematical model was studied by mechanical analysis and CFD (Computing Fluid Dynamics) computation. Besides, an intelligent adaptive based control law was proposed and the optimization...
The real-time estimation of road utilization adhesion coefficient is an important issue for the ASR (Anti-Slip Regulation) system of electric wheel independent drive vehicle. Firstly, the 1/4 vehicle dynamics model was built based on the LuGre tire model. Then combined with wheel angular velocity information, the exponential approach law-based sliding mode observer for the road utilization adhesion...
A shape-shifting robot, which named “AMOEBA-I”, has diverse configurations. The accessibility of the robot can be reinforced in the narrow space by changing the configurations. In this paper, a path planning method is presented corresponding to the unique reconfigurable ability of the robot. This method can automatically adjust the computational cost according to the distribution of obstacles in robot's...
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