飞机测试系统中的电磁干扰与防护措施

Electromagnetic Interference and Protection Measures in Aircraft Test System

现代飞机系统中含有很多电子产品，功能越来越强大，电子线路也越来越复杂，试验与测试是飞机研究工作的重要组成部分，贯穿于全寿命周期，是具有全局性的关键技术。飞机的复杂性决定其试验和测试技术的挑战性，而测量控制系统的可靠性和稳定性更是关系到飞机试验与测试工作的质量。随着科学技术的发展，军工、工业、民用设备或系统的自动化水平的不断提高，电磁干扰和电磁兼容性问题日益突出。基于电磁兼容性、电磁干扰的来源和屏蔽抑制技术的探讨，分析了测试系统中测试电缆可能出现的各种电磁干扰，介绍了抑制电磁干扰的各种措施的实施。

Modem aircraft systems contain many electronic products that are more and more powerful and elec- tronic circuits are also more and more complex. As important components of advanced aircraft research, testing and experiments run through the whole life cycle, and are key to the whole test. The complexity of the aircraft determines the challenges of its testing and experiments technologies, and the reliability and stability of the measurement control system are related to the quality of the aircraft＇ s testing and experiments. With the devel- opment of science and technology, and the continuous improvement of the level of automation of military, indus- trial, and civil equipment or systems, electromagnetic interference and electromagnetic compatibility problems have become increasingly prominent. According to the discussion of electromagnetic compatibility, electromag- netic interference source and shielding suppression technology, various electromagnetic interferences that may appear in the test cable in the test system are analyzed, and the implementation of various measures to suppress electromagnetic interference is introduced.