摘要
提出用具有多分辨分析的小波阈值法对油压、位移信号去噪,去噪结果显示,小波阈值去噪可以明显地抑制噪声,提高信噪比;利用小波变换具有奇异性检测性能好的特点自动识别开、贴闸油压,效果较好.
The method of oil pressure signals and displacement signals denoised by wavelet shrinkage was presented. Because wavelet shrinkage has multi-resolution advantage, the noise existed in the signals can be reduced largely. Addition, in order to recognize the value of brake oil pressure,wavelet transform which has the advantage of better singularity detection was described. Through these methods described, the good effects of signal denoise and recognition of the value of brake oil pressure were obtained from example.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2004年第5期618-621,共4页
Journal of China Coal Society
关键词
提升机
制动装置
小波变换
奇异性检测
去噪
hoist
brake staff
wavelet transform
singularity detection
denoise
