摘要
振动监测技术是当前柴油机状态监测和故障诊断的基本方法,本文通过分析柴油机缸盖振动信号的吸引子图来定性刻画其振动的复杂度,并采用抽区间分析法,利用二进小波变换对柴油机燃烧段缸盖振动信号分解,提取其高频信息,结合G-P算法计算其高频信息的关联维数。研究表明,计算柴油机缸盖振动信号的关联维数是一种诊断柴油机气门故障的有效方法。
The vibration monitor technique is a basic method for diesel engines state monitoring and fault diagnosis. Analyzing the attractor of cylinder cap vibration signal, complex degree is qualitatively depicted, using zone analysis method, and the high frequency information of combustion segment in cylinder cap vibration of diesel engine is pick up by using binary scale wavelet In the end, the paper uses G-P algorithm to calculate correlation dimension of the high frequency information of combustion segment cylinder cap vibration signal, the results show that the above method is efficient in the diesel engines state monitoring and fault diagnosis.
出处
《机电工程技术》
2007年第11期52-55,共4页
Mechanical & Electrical Engineering Technology
关键词
气门
振动
故障诊断
关联维数
G-P算法
valve gap
vibration
fault diagnosis
correlation dimension
G-P algorithm
