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In order to improve the efficiency of finger vein identification, this paper proposed a new identification method based on the direction feature of the vein image. Firstly, 2-D Gabor filter is used to filter the original vein image. Then the phase and direction texture features are extracted. An algorithm is used for fusion at feature level. Finally, a modified Hamming distance measure is used for...
This paper presents an investigation on the sequential clustering, based on second order statistical measures, for the task of speaker diarization. This clustering technique, which represents the second part of a global system of speaker indexing, is made for gathering the homogeneous segments obtained during the segmentation step. Most existing clustering systems are based on hierarchical clustering...
We present the principle of the Static Var Compensator, and introduce the design of a static var compensator control system. The design techniques of DSP CPU board and signal conditioning circuit is analyzed in this paper. We describe the fast algorithm solving reactive power and PID algorithm with variable parameter avoiding integral saturation in detail. The performance of static var compensator...
Closed-loop supply chain based on third-party take back model (TPT-CLSC) is the key issue on business area. Making use of the production of supply chain response time, this paper studies TPT-CLSC decision-making mode based on delivery response time using game theory, and analyzes the optimal delivery response time and pricing strategies of decentralized decision-making and centralized decision-making...
A variable structure control (VSC) method is designed to synchronize a chua's circuit system with dead-zone in the control input, and a necessary and sufficient condition which can guarantee the stabilization of the sliding mode is obtained. By using VSC method, a new variable structure control law is proposed to ensure the occurrence of the sliding mode for the error dynamics even when the system...
To measure weft tension of a rapier loom exactly during weft insertion, this paper reasonably configures technological parameters for the rapier loom, adopts a weft tension test system composed of MC68332, main shaft rotation angle sensor, tension sensor, data acquisition chip and display to achieve real-time measurement of dynamic weft tension, elaborates the principle and design method of this tension...
LOD visual simulation method which can make battle-simulation visualization, is an important method for building view-scene model. In this paper, a modified visual simulation method based on LOD is proposed. The master idea is generating initial triangle grids for view-scene using LOD method, and subdividing them using iterative fractal technology. The method not only resolves visual transition problem...
New type of universal Cartesian serial-parallel manipulator in singular configuration, kinetics equations and Euler's equations constructed, complete analysis of each jointed points of the moving platform carried out, inverse kinetics solution can be obtained with the given parameters, which include the position and orientation of the manipulator, applied force on the output shaft, parameters of motion...
The Current problems of the mathematics analysis courses in science and engineering colleges and universities is unsatisfactory. People's traditional concepts of mathematical analysis courses need to be updated. This article discussed the teaching content and method of Mathematical analysis and Put forward suggestions for improvement, such as Mathematical culture and numerical experiments bring in...
A typical deformable object assembly operation is researched, i.e., a deformable peg into a rigid hole assembly as an example is presented in the paper. The deformation field and geometrical, kinetic and dynamic constraint conditions of a deformable peg is analyzed. For simplification analysis, here the elastic long peg can be considered as a beam. Based on the hypothesis of the material, mechanism...
With the development of information technology, the traditional library service model has been difficult to satisfy user needs. In recent years, the rapid development of mobile devices provides a good platform for the expansion of library services. Therefore, using WAP Web technology to design and implement a function of more sophisticated mobile library system become possible. The mobile libraries...
A new coil unwinding roller operating framework of leveling line in hot rolled flat sheet metal factory is brought out based on analyzed the shortcomings of the original operating system. The main features of the new system and the design thoughts of its hydraulic operation system are described in detail. A open controlling system is used which is based on soft PLC technology. The constant pressure...
Frequency Domain Linear Prediction (FDLP) gives an approximation of the Hilbert envelopes of a signal. FDLP based Codec works with long temporal segments and keeps the information carried by the time-domain envelopes very well. The codec gives good quality of the reconstructed signal, but coding efficiency is not enough. Here Frequency masking is introduced to FDLP based codec to reduce the bit-rate...
Currently audio encoding rate selection is mostly based on the extent of the channel congestion. This paper presents an analysis of complexity of audio based on Mean Opinion Score (MOS). A primitive encoding rate selection system is also set up for evaluation. The different styles of music exhibit various requirement of encoding rates in the view of MOS. Experiment results indicate that the proposed...
This paper proposes a particular method to save time and power for mobile robots path planning in work. This method is used for finding shortest paths between all pairs of vertices in simple graph (or network) which is determined by the vertex set and the edge set. And it has a new kind of matrix operation with selection and connection operators for calculation. This matrix operation is easier, conciser...
Based on the theory of Complexity Adaptive System, we attempt to study the emergency management system of public accident through evolutionary game theory and simulate the evolutionary game. Evolutionary game theory is based on boundedly-rationality, takes the community as the research object, and it provides the decision-making basis to the emergency management system of public accident.
In this paper, a fast algorithm for radar detection based on line Hough transform is presented. Unlike the traditional method, the idea of our proposed is that the point of data space should be mapped into the Hough parameter space of slope and intercept, where the relative position of the points in the data space is preserved. Then, only one time transformation of coordinate is employed to get the...
Multiple Input Multiple Output (MIMO) radar is a new radar technique. It has many advantages over conventional phased radar in many ways such as anti-intercept of radar signal, low velocity target detection, and resolution. The signal design is a chief problem for radar. In this paper, we analyze the chaotic signal for MIMO radar.
To improve the dynamic performances of permanent magnet synchronous motor (PMSM) drive, a novel implementation of speed controller based on adaptive fuzzy logic is presented in this paper. Using the output of the fuzzy speed controller (FC), the quadrature axis current reference value can be obtained. At the same time, the outputs of the current controller can be corrected by the disturbance voltage...
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