航天专用测试设备电源干扰抑制技术应用

Application of space special test equipment power interference suppression technologyYuli, Gaoyan,Kong Xiangling

摘要:

航天专用测试设备通常是为某航天产品测试需求而专门定制的测试设备,其功能主要用于检测产品的各项技术指标是否合格。如果设备对外干扰太强或是抗干扰能力太差,都会直接影响到产品的测试精度,严重时也可能给被测产品带来损害,那么设备承制方必将承受严重的经济损失,所以电磁兼容性设计在航天专用测试设备中举足轻重。通过对航天专业测试设备的电源特点分析和EMI分析,从滤波、屏蔽、接地三个方面深入探讨了电源干扰抑制技术在航天专业测试设备中应用的具体措施。这些电磁兼容方法已经成功应用在某测试设备嵌入式供电电源和机箱结构中,通过了CE102、RE102等九项电磁兼容试验。

Abstract:

Aerospace special test equipment is usually customized for a specific space product test requirements, its function is mainly used to test whether the technical indicators of the product are qualified or not. If the external interference of the equipment is too strong or the anti-interference ability is too poor,it will directly affect the test accuracy of the product, and when it is serious, it may also bring damage to the product under test, then the equipment contractor will bear serious economic losses, so electromagnetic compatibility design plays an important role in aerospace special test equipment. Based on the analysis of power supply characteristics and EMI analysis of aerospace professional test equipment, the concrete measures for the application of power interference suppression technology in aerospace professional test equipment are discussed from three aspects: filtering, shielding and grounding. These electromagnetic compatibility methods have been successfully applied to the embedded power supply and chassis structure of a test equipment, and have passed nine electromagnetic compatibility tests, such as CE102, RE102 and so on.