一种模拟电路功能模块故障诊断的方法  

A method of function module fault diagnosis of analog circuit

作　　者：胡梅[1] 樊敏[1,2] 

机构地区：[1]国防科学技术大学机电工程与自动化学院,长沙410073 [2]湖南师范大学物理与信息科学学院,长沙410081

出　　处：《电子测量与仪器学报》2015年第5期676-684,共9页Journal of Electronic Measurement and Instrumentation

基　　金：国家自然科学基金(61201031;61171079)资助项目

摘　　要：针对实际电路中以模块化的形式实现特定应用功能的模拟电路,按功能进行分类,从实用化的角度研究了其功能故障的诊断方法。以空间电子仪器测试系统中的综合信号处理电路为应用背景,研究了模拟电路模块划分原则和方法,提出了一种模块化功能故障检测方法,并构造了模拟电路第一级功能模块字典;基于测前迭代仿真的通用模拟电路故障诊断方法,通过改进提出了"6点5段式"模拟电路测前迭代仿真方法,并构造了功能模块电路的第二级故障字典,在功能模块故障检测的基础上实现了故障元件的定位和参数区间识别。最后,通过仿真实例验证了该诊断方法的有效性,为模拟电路故障字典法在空间电子仪器模拟电路中的故障诊断实用化奠定了基础。In the practical circuit for application, analog circuit is usually in a modular form to realize the specific function, thus it is a practical direction to research the diagnosis method of function fault according to the classifica- tion of function module in analog circuit. Take the integrated tronic instruments as the application background signal processing circuit in the test system of space elec- , the division principle and method of function module in analog cir- cuit is researched, a modular fault detection method is tablished. Based on the universal analog circuit fault diagnosis proved ＂6 points-5 segments＂ analog circuit simulation before dictionary is established. Therefore, according to the second , and the first level function module dictionary is es- method of iterative simulation before test, the ira- test method is proposed, and then the second level fault level fault dictionary, the fault component location and fault parameter interval identification are realized based on the fault detection result of function module. Finally, the simulation results verify the efficiency of the proposed method. It is the practical foundation for the fault dictionary method using in the analog circuits of space electronic instrument.

关 键 词：模拟电路 功能模块 故障诊断 空间电子仪器 故障字典 

分 类 号：TN407[电子电信—微电子学与固体电子学]