摘要
提出了类周期概念，利用拓展的周期信号自相关函数，实现了柴油机缸盖振动信号类周期的识别和主要振动波形的提取。实践证明，该方法的准确性高，有利于实现数据处理的智能化，为进一步分析柴油机缸盖振动信号奠定了扎实的基础。
The definition of approximate period is put forward .Based on the extended auto-correlation function of periodic signal,the approximate period of vibration signal sampled on cylinder head of diesel engine is recognized,and the main vibration waveforms are extracted.The application results show that this method is very accurate and helpful for sigmal processing intellectually
出处
《石油大学学报（自然科学版）》
CSCD
1999年第6期57-58,72,共3页
Journal of the University of Petroleum,China(Edition of Natural Science)
关键词
柴油机
故障诊断
信号识别
振动信号
缸盖
汽缸
diesel dngine
fault diagnosis
vibration signal
vibration period
signal recognition
auto-correlation
