摘要
本文提出的故障诊断方法主要是针对模拟电路的故障诊断,首先应用拉氏变换确定模拟电路的传递函数,其次根据已确定的正常电路传递函数,由不同故障类型计算相应的故障传递函数,生成故障诊断表。在进行故障诊断时,根据输入输出值计算当前的电路传递函数,把该函数与故障诊断表进行比对完成故障诊断。本文最后利用Multisim软件仿真了一个典型的模拟电路,并对该电路进行故障设置,计算了故障诊断表,应用软件仿真结果与理论计算的结果进行了比较,验证了该方法有效性。
The fault diagnosis method of the paper is for the analog circuit,firstly using Laplace Transfer to conform the analog circuit transform function,secondly compute the fault transform functions with different kinds of fault to generate the fault diagnosis table based on the normal circuit transform function.The table is used to compare fault diagnosis.At last the software Multisim is used to simulate an typical analog circuit to do the fault diagnosis,the faults are set in the circuit to compute the fault diagnosis table,and this method is verified usefully by compared the result of the software and the calculating.
出处
《电子测试》
2010年第9期30-34,共5页
Electronic Test
关键词
拉氏变换
传递函数
故障诊断
Laplace Transform
Transform Function
Fault Diagnosis
