【摘要】 航空发动机燃油调节系统由泵源、计量活门、压差稳定活门等组成，属于液压速度伺服系统。由于其工作环境恶劣、工况复杂，存在故障隐蔽性强、交联关系复杂和故障诊断难度大等问题。通过对燃调系统进行机制分析，明确各元件的故障机制，并采用故障失效模式与影响分析方法(FMEA),确定和识别系统中已知或潜在的故障。通过潜在故障分析，评估航空发动机故障发生概率，建立各部件的故障隶属度矩阵，并提出纠正措施与故障检测方法。通过模糊综合评价算法，实现定量的综合性分析与评价，从而保证航空发动机燃油调节系统的高可靠性运行。更多还原

【Abstract】 Aeroengine fuel regulation system consists of pump source, metering valve, constant differential pressure regulation valve and so on, and it is a hydraulic speed servo system.Due to the bad working environment and complex working conditions, there are problems such as strong failure concealment, complicated coupling and difficulty in failure diagnosis.On the basis of the analysis and clarification of the principle of the fuel regulation system, the failure mechanism of each component was defined, and the known or potential failures in the system were identified by using the method of failure mode and effects analysis(FMEA).The probability of aeroengine failure was evaluated by potential failure analysis, the failure membership matrix of each component was established, and the corrective measures and failure detection methods were proposed.The fuzzy comprehensive evaluation algorithm is used for quantitative comprehensive analysis and evaluation, so as to ensure the high reliability operation of the aeroengine fuel regulation system.更多还原