真空、高温下的电磁环境测试方法与应用

Test Method and Application of Electromagnetic Environment in Vacuum and High Temperature

随着飞行器电气系统集成度、功能性的提高,飞行器所处的生存环境也剧烈变化,从以往的常规环境逐步转向真空、高低温、高湿、高功率辐射等恶劣环境下生存,由此系统与环境的兼容性工作问题进一步凸显。为保证系统正常工作,应对上述环境特性进行摸底。本文提出工作在真空、高温环境下的飞行器舱段内的电磁环境的测试方法,并应用该方法,对舱段内的电磁辐射特性进行摸底,验证了热电池激活工作后,在飞行器舱体内产生了电场突变,验证了该方法的有效性。同时,通过对测试数据的分析,提出该测试方法的实施和改进要点。

According to the development of electrical integration and function in aircraft, the living environment of aircraft has been changed a lot from conventional to vacuum, high or low temperature, high humidity and high power emission environment. The compatibility between electric systems and complicated environment is seriously. In order to guarantee electric systems work normally, the living environment of aircraft need to be tested. The test method of electromagnetic in vacuum and high temperature environment for aircraft cabin is proposed in this paper. Applying this method to measure electromagnetic radiation in aircraft cabin, the transient change of electric field strength is founded out. The change just happened after the hot batteries activated. And this method is tested and verified. At the same time, basing on the analyzing test results, the implementation and improvement elements of this method are also proposed in this paper.