民用飞机发动机监测方法研究

对民用飞机发动机状态监测和故障诊断方法进行了研究,提出了一种能够实时反映零件故障信息的油液在线静电监测方法,设计并搭建了一套静电监测系统及实验平台,开展了循环润滑条件下销盘滑动摩擦磨损实验,使用自制的油液静电传感器对油路中磨粒进行监测。实验结果表明油液静电传感器能够监测到金属材料荷电颗粒,感应电压幅值与磨粒大小具有相关性,感应电压波形与磨粒荷电特性有关,验证了静电传感器在线监测的有效性,为判断故障提供了进一步的依据。

Study of Monitoring Method for Civil Aircraft Engine

The method of civil aircraft engine condition monitoring and fault diagnosis is studied. Come up with a new monitoring techniques, which can reflect real parts fault information, early warning failure. In this paper, electrostatic monitoring principle is analyzed, and electrostatic monitoring system and experimental platform had been designed and developed. The circulation lubrication conditions pin plate sliding friction and wear experiment is carried out, using a homemade electrostatic sensor circuit in fluid abrasive grains to montor. The results show that the oil-line electrostatic sensor can monitor the charged particles of various metallic materials, inductive voltage is relevant to the debris size, shape of the inductive voltage is relevant to the debris charging characteristics, indicating availability of on-line monitoring in the model of electrostatic sensor and providing a further evidence for the fault.