某导航机载设备自检电路故障技术分析  

Technical Analysis of a navigation airborne equipmentbuilt-in test circuit fault

作　　者：乌轶聪 Wu Yicong(The 20th Research Institute of China Electronics Technology Group,Xi’an Shaanxi,710068)

机构地区：[1]中国电子科技集团公司第二十研究所,陕西西安710068

出　　处：《电子测试》2021年第9期106-107,100,共3页Electronic Test

摘　　要：本文介绍了某导航机载设备自检电路一次偶发故障的分析和解决过程。文章首先描述了故障现象并给出设备的组成和其自检原理,然后用实际测量结合计算机电路仿真的方法进行了故障分析和定位,最后通过排除故障验证了理论分析并进行了元器件失效分析。This article introduces the analysis and solution process of an accidental fault of a navigation airborne equipmentbuilt-in test circuit.Firstly,the failure was specified,the article gives the composition of the equipment and the principle of its built-in test function,then analyzesand locates the fault with the method of actual measurement combined with computer simulation,finally,the theoretical analysis is verified by troubleshooting,and the component is analyzed.

关 键 词：自检电路 可调电容 MUTILSIM 

分 类 号：V249.3[航空宇航科学与技术—飞行器设计]