Cao Jie, Wei Minxiang, Zhou Dong
College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
College of Field Engineering, Army Engineering University of PLA, Nanjing 210000, China.
Sensors (Basel). 2022 Jul 18;22(14):5357. doi: 10.3390/s22145357.
This paper presents a study on the electromagnetic effects of a main fuel control system under the action of a strong electromagnetic pulse. It assesses the electromagnetic sensitivity of a speed sensor and a linear variable differential transformer (LVDT) sensor. This assessment focuses on the control system's electromagnetic effects and the sensors' coupling signals. The effects and signals were determined using radiation and pulse current injection tests. Analysis of the signal at the system power port shows that it is the same as those for the two test methods. Based on analysis of the working mechanism and terminal signals of the sensors, the electromagnetic sensitivity of the system is different under the different electromagnetic pulse conditions. The electromagnetic sensitivity characteristics of the sensors were verified, and the electromagnetic effects of the main fuel regulation control system were analyzed. Meanwhile, the degree of sensor coupling mechanism caused by the electromagnetic coupling effects of the main fuel regulation control system under strong electromagnetic pulses were studied. These findings have clear practical implications for electromagnetic pulse protection of aero-engine control systems.
本文介绍了一项关于主燃油控制系统在强电磁脉冲作用下的电磁效应的研究。它评估了速度传感器和线性可变差动变压器（LVDT）传感器的电磁敏感性。该评估聚焦于控制系统的电磁效应以及传感器的耦合信号。这些效应和信号是通过辐射和脉冲电流注入测试确定的。对系统电源端口处信号的分析表明，它与两种测试方法得到的信号相同。基于对传感器工作机制和终端信号的分析，在不同电磁脉冲条件下系统的电磁敏感性有所不同。验证了传感器的电磁敏感性特性，并分析了主燃油调节控制系统的电磁效应。同时，研究了强电磁脉冲下主燃油调节控制系统的电磁耦合效应引起的传感器耦合机制程度。这些发现对航空发动机控制系统的电磁脉冲防护具有明确的实际意义。
