压气机的失速与喘振直接影响航空发动机的稳定工作范围,主动控制技术是实现发动机扩稳的重要技术手段。如何尽量早地获取与识别失速先兆信号,是压气机失速主动控制研究的一个重要内容。压气机失速信号分析通常包括信号选取与先兆捕捉两方面内容。其中,选取的信号可以是原始采集信号,也可以是滤波处理信号。原始信号由于混 Compressor stall and surge directly affect the stability of the aero-engine operating range, active control technology is an important technical means to achieve engine stability. How to obtain and identify the signal of stalling as early as possible is an important part of the research on active control of compressor stall. Compressor stall signal analysis usually includes both signal selection and precursor capture. Among them, the selected signal can be the original acquisition signal can also be filtered signal processing. The original signal due to mixing