CAJ | 학술논문

针对航空发动机失稳时的重要表征--喘振信号开展检测、判别和处理方法的研究。通过失稳信号处理器实时获取压气机压力脉动数据，采用时域诊断分析方法完成对失稳信号的在线检测和预警。经压缩部件台架试验验证，失稳信号处理器能成功分离出喘振状态下的失稳信号特征，实现对失稳信号较为准确的捕获，采用的失稳判定方法有效。研究结果表明：失稳特征信号的实时、准确甄别，是发动机失稳主动控制的先决条件，提高失稳特征信号判别的正确率，可有效避免发动机失稳过程中信号的误判、漏判。
침대항공발동궤실은시적중요표정--천진신호개전검측、판별화처리방법적연구。통과실은신호처리기실시획취압기궤압력맥동수거，채용시역진단분석방법완성대실은신호적재선검측화예경。경압축부건태가시험험증，실은신호처리기능성공분리출천진상태하적실은신호특정，실현대실은신호교위준학적포획，채용적실은판정방법유효。연구결과표명：실은특정신호적실시、준학견별，시발동궤실은주동공제적선결조건，제고실은특정신호판별적정학솔，가유효피면발동궤실은과정중신호적오판、루판。
For the surge signal, an important instability characteristic of aero-engine, detection,identifica-tion and processing method research were carried out. Real time pressure data of compressor was obtained by instable signal processor and online detection and pre-warning were accomplished by time domain diag-nosis method. Bench test of compression components validated that signal processor successfully captured the instable signal and differentiated the characteristics with effective method. The results show that the ac-curate discrimination of real-time instable signal is the precondition for active control and the improvement of discrimination accuracy could effectively avoid the misjudgment or pretermission of signal.