基于AND／OR／COMB树关系的模糊推理所建立的审定损害的专家系统

通过使用集合的基本概率定义上限，下限概率，形成信度，通过隶属函数定义模糊集合的包含度，相交度，使信度理论在模糊集合得以扩张，得到了利用不确定性及模糊性的一个合理的揄方法。在此基础上，采用ＡＮＤ／ＯＲ／ＣＯＭＢ树推理开发了一个审定损害的专家系统。     

基于PROFINET IO的S7-1200控制器与G120变频器通讯

针对PLC与变频器之间通讯时电机速度精细调节难的问题,应用新一代高速工业以太网PROFINET通信技术,将S7-1200PLC、G120变频器和触摸屏构成一个小型局域网.采用CSM1277作为小型交换机,三者之间采用以太网通信,建立通过PROFINET总线实现西门子S7-1200PLC与G120变频器通讯的方法.在分析...     

多约束环境下的二维布局

多约束环境下不规则的多边形的优化布局具有一定的特殊性，本文就多约束条件对二维布局的影响进行分析，提出双向包络线的概念，算法，运用基于ＡＮＤ／ＯＲ图的问题归纳进行求解，算法效率高，易于实现。     

Fluence rate effect semi-mechanistic modelling on WWER-type RPV welds

Effort at JRC-IE is ongoing in order to develop a semi-mechanistic model to forecast radiation embrittlement. The understanding and the quantification of the influence of the fluence rate is of particular importance for the correct interpretation of data obtained in material testing reactors or in surveillance capsules, which are accelerated with respect to embrittlement of the reactor pressure vessel wall itself. To verify the applicability of the fluence rate as included in the semi-mechanistic model and tuning the model parameters various WWER-type vessel weld material have been studied. For the selected welds, copper ranges from 0.08 to 0.18 mass%, while phosphorus variation is from 0.013 to 0.036 mass%. The fluence range is up to 2 × 10²⁰ n cm⁻² obtained at two fluence rates of 4 × 10¹¹ and 3.5 × 10¹² n cm⁻² s⁻¹, typical for WWER-440 surveillance positions. Significant fluence rate effect has been observed for the welds containing low copper and moderate phosphorus, and adaptation of the semi-mechanistic model’s parameters for the high flux data is required. To verify the consistency and the limits of the findings other similar data coming from RPV surveillance programmes are also included in this analysis.     

Analysis of WWER-440 and PWR RPV welds surveillance data to compare irradiation damage evolution

It is known that for Russian-type and Western water reactor pressure vessel steels there is a similar degradation in mechanical properties during equivalent neutron irradiation. Available surveillance results from WWER and PWR vessels are used in this article to compare irradiation damage evolution for the different reactor pressure vessel welds. The analysis is done through the semi-mechanistic model for radiation embrittlement developed by JRC-IE. Consistency analysis with BWR vessel materials and model alloys has also been performed within this study. Globally the two families of studied materials follow similar trends regarding the evolution of irradiation damage. Moreover in the high fluence range typical of operation of WWER the radiation stability of these vessels is greater than the foreseen one for PWR.     

基于S7-1200 与SmartLink远程IO的ProfiNet 通信控制的实现

西门子S7-1200 PLC通过五类双绞网线与SmartLink 的适配器相连,从而以通信的方式实现远程IO模块的控制,在同一ProfiNet 工业以太网总线下实现数据交换。本文对控制系统的框架做了介绍,对SmartLink 远程智能IO的拓扑结构做了说明,并介绍了如何在西门子TIA博途软件中进行硬件组态及参数设定及数据传递工程,最后以FB块的方式对多分布式IO的执行机构做管理控制。