结合CINRAD/SA雷达天线的动态控制过程、结构特点与故障现象,从理论上清晰地分析了天线运行的基本过程,指出各CINRAD站经常、普遍出现的天线座动态故障的实质是雷达天线运行的实际动态速率和位置与RDA(Radar Data Acquisition)计算机给...结合CINRAD/SA雷达天线的动态控制过程、结构特点与故障现象,从理论上清晰地分析了天线运行的基本过程,指出各CINRAD站经常、普遍出现的天线座动态故障的实质是雷达天线运行的实际动态速率和位置与RDA(Radar Data Acquisition)计算机给定雷达伺服控制系统的命令不匹配以及判断造成此类故障报警的雷达天线动态速率不匹配条件和位置不匹配条件,而后深入分析了雷达天线伺服控制结构中的D/A转换电路、速度比较电路等关键部件的工作状态,最后总结了排查此类故障的驱动链路检查、滑环维护方法、伺服电机检测方法等,从而为CINRAD/SA雷达天线故障的现场维护和维修提供参考。展开更多
The prevention of fatigue damages is a crucial issue for NPPs （nuclear power plants）. The AFC （AR.EVA fatigue concept） provides for a multi-step and mnlti-disciplinary process against fatigue during the design and...The prevention of fatigue damages is a crucial issue for NPPs （nuclear power plants）. The AFC （AR.EVA fatigue concept） provides for a multi-step and mnlti-disciplinary process against fatigue during the design and operating phase of NPPs. The entire process of fatigne design is based on an installed FAMOS （fatigue monitoring system）. In this way, realistic load data are available to manage the component ageing and enable the optimization of operating modes. The measured temperatures are processed via a FFE （fast fatigue evaluation）. Thus, an online fatigue evaluation of the cumulative usage factor is performed after every operational cycle. This procedure gives a first fatigue status of the power plant. Furthermore, a DFC （detailed fatigue calculation） conforming to the code rules is carried out in order to determine the state of the plant at the highest loaded positions. These finite element analyses include determination of thermal transient and subsequent stresses and strains. Fatigue environmental factors are taken into account in these studies.展开更多
文摘结合CINRAD/SA雷达天线的动态控制过程、结构特点与故障现象,从理论上清晰地分析了天线运行的基本过程,指出各CINRAD站经常、普遍出现的天线座动态故障的实质是雷达天线运行的实际动态速率和位置与RDA(Radar Data Acquisition)计算机给定雷达伺服控制系统的命令不匹配以及判断造成此类故障报警的雷达天线动态速率不匹配条件和位置不匹配条件,而后深入分析了雷达天线伺服控制结构中的D/A转换电路、速度比较电路等关键部件的工作状态,最后总结了排查此类故障的驱动链路检查、滑环维护方法、伺服电机检测方法等,从而为CINRAD/SA雷达天线故障的现场维护和维修提供参考。
文摘The prevention of fatigue damages is a crucial issue for NPPs （nuclear power plants）. The AFC （AR.EVA fatigue concept） provides for a multi-step and mnlti-disciplinary process against fatigue during the design and operating phase of NPPs. The entire process of fatigne design is based on an installed FAMOS （fatigue monitoring system）. In this way, realistic load data are available to manage the component ageing and enable the optimization of operating modes. The measured temperatures are processed via a FFE （fast fatigue evaluation）. Thus, an online fatigue evaluation of the cumulative usage factor is performed after every operational cycle. This procedure gives a first fatigue status of the power plant. Furthermore, a DFC （detailed fatigue calculation） conforming to the code rules is carried out in order to determine the state of the plant at the highest loaded positions. These finite element analyses include determination of thermal transient and subsequent stresses and strains. Fatigue environmental factors are taken into account in these studies.
