【摘要】 民用航空发动机适航规定要求发动机控制系统部件单点失效不应威胁飞行安全，而航空发动机燃油调节系统部件故障会引发不可控高推力故障，增加推力控制故障处置（TCMA）系统是保障飞行安全的有效措施。提出了基于燃油调节系统的TCMA方案，包括故障诊断方案和容错方案。根据阈值对比执行机构模型输出、航空发动机逆模型输出及位移传感器测量位移换算所得燃油流量实现故障诊断。在燃油调节系统内部增加TCMA模块，根据故障诊断结果，采取不同容错控制方法，针对传感器故障切换备用传感器；针对计量活门卡滞故障及压差升高故障启用TCMA模块进行容错控制。航空发动机部件级模型和燃油调节系统模型的联合仿真的结果表明：所提TCMA方案可准确诊断燃油调节系统计量活门卡滞故障、压差改变故障及位移传感器故障并实现容错控制，验证了该TCMA方案的有效性。更多还原

【Abstract】 The airworthiness regulations for civil aeroengine require that single-point failures of engine control system components should not threaten flight safety, while the component failure of an aeroengine fuel control system can result in uncontrollable high thrust.Adding a Thrust Control Malfunction Accommodation(TCMA) system is an effective measure to ensure flight safety. A TCMA scheme based on the fuel control system was proposed, including fault diagnosis and fault accommodation strategies. Fault diagnosis is achieved based on threshold comparison of the actuator model output, the aeroengine inverse model output, and the fuel flow converted from displacement sensor measurement results. The TCMA device is integrated into the fuel control system, and different fault accommodation control methods were adopted based on the fault diagnosis results. For sensor failures, the primary sensor is replaced by the backup sensor. For the metering valve stuck and differential pressure rise, the TCMA device is activated for fault accommodation control. The results of the joint simulation of the component-level engine model and the fuel control system model show that the proposed TCMA scheme can accurately diagnose metering valve stuck, changes in differential pressure, and displacement sensor failures in the fuel control system and achieve fault accommodation control, verifying the effectiveness of the TCMA scheme.更多还原