摘要
利用小波变换中的“近似”特性，对柴油机的燃烧振动信号进行了光滑预处理，抑制了高频信号的干扰，有效地提高了柴油机各缸燃烧工况的综合诊断精度。
The vibration signal caused by diesel engine's combustion is pretreated by using the approximability characteristic of wavelets transformation,which has restrained the high frequency interference and improved the integrated diagnostic precision of combustion condition.
出处
《冶金设备》
2000年第3期49-51,共3页
Metallurgical Equipment
基金
北京市自然科学基金
石油大学总校基金
关键词
柴油机
小波变换
信号预处理
振动波形
Diesel engine
Wavelet transformation
Signal pretreatment
