Search results for: Zhang Gaoyu
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In this paper, the principle of Static Var Compensator (SVC) is analyzed in detail, and a kind of SVC system which consists of Thyristor Controlled Reactors (TCR) and Fixed Capacitor (FC) is designed. Bridge rectifier and L-R circuit is used to simulate the symmetrical three-phase load. Based on instantaneous reactive power theory, the SVC system signals are detected rapidly and precisely. In order...
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In order to restrain the influence from atmosphere turbulence and channel time-varying character on free space optical communication system, a novel universal scheme with transmitting diversity and receiving diversity is put forward, into which STTC is introduced to fully make use of the characteristic of spatial diversity and time diversity. In order to reducing the decoding complexity, a modified...
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Financial information system requires strong service survivability capability. A framework combining ad hoc network and P2P techniques with service-oriented architecture (SOA) is firstly proposed for this purpose. The non-centre characteristic of ad hoc network is used to remove the relationship of the SOA depending on the universal discovery description and integration(UDDI). The framework inherited...
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In order to track with the beacon real time and high precisely for fine tracking system in free space optical communication, a novel control algorithm is presented in the paper. The kalman filter is used to predict the bean's feature, and multi-resolution correlative matching operation and fast searching method are adopted to search the beacon's center. The PED controller is used to realize the feedback...
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Of the strong non-Gauss characteristic, the high frequency financial time series could not be analyzed and forecasted by traditional statistics method any more. For inaccurately estimating the realized volatility using the limited high frequency data created by the market operation, a novel forecasting method is proposed: after modeling the realized volatility, the particle filtering technology for...
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The statistical analysis of traffic flow is the fundamental of road traffic forecasting with data mining. In the common traffic flow theory, macroscopic flow model and data presentation shows chaos and stochastic distribution. However, in the microscopic based traffic model, it is revealed that in high frequency sampled test, the variables such as flow, density, and lane usage have common trend of...
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In the industrial environment the programmed logic controller device trouble locating is a hard work to overcome. There are few lectures to describe the same works. A novel diagnostic model based on fuzzy theory for the trouble-locating in multi input-multi output PLC (Programmed Logic Controller) control system is proposed originally. How to implement the diagnostic process in detail is also discussed...
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After the characteristics and shortage of some old algorithm about the infrared small weak targets detection being analyzed, a kind of new detection algorithm via high order spectral analysis is proposed for single frame image. Taking the gray level data of the image ground as the noise signal, the gray level data of small weak targets as the harmonic signal mixed in the noise signal, the gray level...
