煤岩破坏电磁辐射信号的短时分形模糊滤波

Short-time fractal fuzzy filtering of electromagnetic emission signal during the fracture of coal or rock

介绍了短时分形滤波的基础理论,在分析煤岩破坏电磁辐射信号噪声特点基础上,提出了煤岩破坏电磁辐射信号的短时分形模糊滤波模型及分形维确定方法,并应用于型煤和原煤两种煤岩破坏电磁辐射信号的滤波处理。结果表明,短时分形滤波法用于煤岩破坏电磁辐射信号滤波是可行的,实现了煤岩破坏电磁辐射信号的自适应模糊控制滤波。

In this paper, basic theory of short-time fractal filtering was introduced. On the basis of analyzing the noise characteristics of electromagnetic emission （EME） signal during the fracture of coal or rock, short-time fractal fuzzy filtering model of EME signal and determining method of fractal dimension were put forward and applied to EME signal processing of moulding coal and raw coal fracture. The results indicate that it is feasible for short-time fractal filtering method to be used of EME signal processing during the fracture of coal or rock and realizes a self-adapting fuzzy control filtering of EME signal.