摘要
在分析了经典谐波小波和广义谐波小波两种谐波小波特点的基础上,提出了两种谐波小波在发动机振动信号分析中的不同应用。仿真试验表明经典谐波小波对信号幅值的变化十分敏感,适合检测信号中的奇异点;广义谐波小波有良好的滤波特性,可以检测并提取出振动信号中的微弱信号。
Based on the analyses of characteristics of classical harmonic wavelet and general harmonic wavelet, different applications of the two types of harmonic wavelets to vibration signal analysis of engines were proposed. Simulation test shows that classical harmonic wavelet is sensitive to the amplitude change of signal and adaptive to identifying the singularity in the signals. While the general harmonic wavelet has fine filter function and can be used to identify and extract the weak signals in the vibration signals.
出处
《噪声与振动控制》
CSCD
北大核心
2008年第6期24-27,共4页
Noise and Vibration Control
关键词
振动与波
谐波小波
发动机振动信号
奇异点
微弱信号
vibration and wave
harmonic wavelet
engine vibration signal
singularity
weak signal
