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To avoid detection or attack, electric field signal characteristic of ships should be controlled. The signal data is decomposed into low frequency component and high frequency component first. The high frequency component is predicted by RBF neural network, the low frequency component is predicted by GM (1,1) model and add up both of the values predicted. Then countercurrent is exported and then the...
Shengli refinery plant process Middle-east crude oil, the equipment is exposed to wash erosion seriously. The elbow on the entrance of the atmospheric distillation tower top exchangers always leak for eroding. Measured the thickness of elbow by ultrasonic thickness meter every month, find the accumulating generation operator of remnant thickness is quasi smooth sequence, established GM (1, 1 ) model...
Shengli refinery plant process middle-east crude oil, the equipment is exposed to wash erosion seriously. The elbow on the entrance of the atmospheric distillation tower top exchangers always leak for eroding. Measured the thickness of elbow by ultrasonic thickness meter every month, established GM (1, 1) model with grey system theory, the average relative error is 1.8959%, model passed error check,...
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