摘要
针对内部具有灌封线圈结构的自整角机难于确定失效部位的问题,提出了采用物理方法和时域反射仪(TDR,Time Domain Reflectometry)技术对其进行失效定位和分析的方法。对发生失效的某型自整角机案例样品,确定了其转子绕组内包括滑环与导线焊点、粗导线与细导线焊点以及细导线绕组在内的断路失效部位。通过热应力模拟实验,对造成该型电机失效的可能原因进行了分析。
To overcome the difficulties for failure isolation of polymer-filled device, the methodology and application of TDR technique on open and short failure isolations have been presented. The analysis procedure and results on both physical analyses and TDR methodology have also been discussed in detail. The failure sites of failed device such as the solder of ring and lead, the inner site of coil are founded. The thermal-induced stress simulation test is conducted to further inspection for the root cause of failure.
出处
《微电机》
北大核心
2007年第9期93-97,共5页
Micromotors
关键词
失效分析
失效定位
时域反射仪
灌封线圈
自整角机
Failure analysis
Failure isolation
Time domain reflectometry (TDR)
Polymerfilled
Synchron