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According to the characteristics of the PCB solder joint image, we put forward the membership degree's calculation formula of the spatial fuzzy C means(SFCM) algorithm which uses the visual information of the Lab value and the spatial information in the Lab space. The segmentation of the solder joint image and the step of marking the defects are introduced in detail. It is proposed that the solder...
Fault diagnosis systems based on computational intelligence have prominent advantages such as rapid reasoning, accurate judgment and so on. A certain type of electronic component has complex structure and mass elements, so it is difficult to determine fault points. Aimed at the problem, a intelligent fault diagnosis method based on immune neural network and Pspice is researched. Fault knowledge acquisition...
InGaN thin films with near entire indium composition range have been successfully grown on GaN/sapphire (0001) by molecular beam epitaxy (MBE). Samples are studied by X-ray absorption fine structure (XAFS) and X-ray absorption near-edge structure (XANES), respectively. They are all obtained with smooth data. Based on JFEFF calculation program, the Nitrogen K-edge X-Ray absorption energy is about 400eV,...
In this work, the on-chip quantum interference of two single surface plasmons was achieved and the high visibility (greater than 90%) proves the bosonic nature of single plasmons. The effect of intrinsic losses in plasmonic waveguides is also discussed.
Here we introduce two works on quantum plasmonics: high-visibility on-chip quantum interference of single surface plasmons and transmission of quantum polarization entanglement in a nanoscale hybrid plasmonic waveguide. Our works can bridge nanophotonics and quantum optics.
Imitating the antibody diversity maintaining mechanism of immune system to realize the global optimization is a target that the immune algorithm try to achieve. Based on the in-depth study of inhibition concentration mechanism, the global optimization characteristic of existing immune algorithm is analyzed, then a global conservation strategy for colony is proposed. Based on the strategy, the improved...
Based on ARM processor and WinCE embedded systems, a detector design is provided for some certain special equipment temperature controller, as well as the relevant hardware and software. In software design, the operating system is customized, driver for hardware is programmed and testing data real-time display is achieved through multi-threading technology with extra data saving and failure analysis...
The issue of optimal controller design which is based on exact linearization of state feedback in the uncertain and chaotic systems with external disturbances is researched. First, based on the mature quadratic optimal control theory, the nonlinear chaotic system model with disturbance is converted to an equivalent linear system model without disturbance. Second, an optimal controller design method...
This paper studies the key technologies of relay training system based on the IEC61850 standard. WinPcap is used to develop IEC81850 based network communication. The proposed tecnique achieves communication between process and bay level, simulates actions of a relay and provides two protection algorithms, namely Fourier algorithm and Continuous Wavelet Transform. Furthermore, the system provides comprehensive...
In this paper, it is discovered that the correlation matrices of antennas whose scattering surface are within the same plane are diagonal matrices. By applying this conclusion to the Numerical Green Matrix Module in the NEC (Numerical Electromagnetic Code), the memory space used by simulation program is significantly reduced, and the computational speed is improved, when the initial structures are...
According to the multi-attribute information of NC technique decision-making and many influencing factor of NC machining, an fuzzy comprehensive evaluation oriented to green NC is proposed. The project of NC milling machining is proposed and discussed applying Analytical Hierarchy Process-AHP predigesting arithmetic.
In this paper, the statue quo of application of QFD is presented. Some questions in traditional QFD such as: (1) the correlations between customers requirements don't be considered in determine the important coefficients of customer requirements, (2) appraising of plan and selecting of optimal plan are very difficult, (3) analyze become very complex when there are many customer requirements and product...
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