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Since present fault prediction method of satellite attitude control system cannot describe and predict the nonlinear system effectively, a new method based on fuzzy-parity equation and grey GM (1, 1) model is presented in this paper. Firstly, fuzzy-parity equation and Kalman filter are utilized to extract the fault feature of satellite actuator. Translation transformation and buffer operator are adopted...
Underwater acoustic communication is one of the key technologies in various important research fields, such as ocean geography, offshore oil industry and defense. However, conventional system design can not achieve desirable results, since the underwater channel suffers a lot from multipath propagation and Doppler Effect. In this paper, we aim to introduce a type of coherent underwater acoustic communication...
e-farm, as China's agricultural modernization effective way for the construction of new countryside in China has injected new vitality. The relevant policies in national support and guidance, the development of China's electronics farm has made remarkable achievements. However, due to China's electronics farm established not long, theoretical research is not mature, and the lack of practical experience...
China's electronic agriculture, tremendously promoted by the government, has made great progress, which offers support to speed up modernization of agriculture and brings new vigor to construction of the new countryside in China. Although its development is not long, China's electronic agriculture has made remarkable attainments. There is many a factor constraining the promotion of China's electronic...
For computer-controlled systems (CCSs), actual sampling intervals inevitably deviate from its nominal sampling period, called sampling interval jitter (SIJ), which may degrade control performance and even unstabilize control systems. So it should be accounted for at design time. The model of CCSs with SIJ is presented and its effects on CCSs is illustrated by simulation. The model developed costs...
The fast development of Internet stimulated the e-commerce to advance remarkably, but along with the evanescence of Internet myth, the e-commerce also entered a regulatory period. Security problems have become the bottleneck baffled the healthy growth of the e-commerce. Through analyzing the threats the e-commerce faced and the prerequisites to make the e-commerce system security, it is very easy...
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