摘要
压气机内的压力变化数据,蕴涵着丰富的发动机状态信息,进行分析对于诊断发动机故障有重要意义。运用分形理论,对压气机失速前后的压力变化数据进行分析,分别计算压气机失速前后压力信号相关维数的变化,结果表明相关维数对发动机失速信号是敏感的,可以作为判断压气机失速的特征信号。
Pressure signal in compressor consists of rich state information of the engine, which is valuable for fault diagnosis. Applying fractal theories to the analysis of the pressure data of a compressor before and after surge, this paper calculates its correlation dimension. The correlation dimension is sensitive to the stall signal of engine and can be used as an important characteristic for stall detection.
出处
《空军工程大学学报（自然科学版）》
CSCD
2003年第3期23-26,共4页
Journal of Air Force Engineering University(Natural Science Edition)
关键词
压气机
失速
分形
相关维数
compressor
stall
fractal
correlation dimension
