摘要
模拟量输出(AO)模块作为分布式控制系统(DCS)平台的重要组成部分,能够实现工业控制4~20 mA的标准电流信号输出,参与反应堆的控制和保护.DCS平台热备架构针对控制器实现主从热备,提高了主控制器模块(MPU)的可靠性,但未考虑AO信号的冗余.设计采用半值均流的方法,利用冗余AO模块之间直接的状态交互,实现故障情况下输出通道的快速切换,达到信号输出'无扰'.对冗余AO模块设计的必要性进行探讨,结合非冗余模型分析故障类型,提出冗余设计方案,阐述故障处理机制,并通过测试验证了设计的可行性.
As an important part of distributed control system(DCS)platform,analog output(AO)module can realize an output of 4—20 mA current signal for industrial control and participate in reactor control and protection.The hot standby architecture of DCS platform implements master-slave hot standby for the controller,which improves the reliability of main process unit(MPU),but the redundancy of AO signals is not considered.In this design,the half-value current sharing method is adopted,and the direct state interaction among the redundant AO modules is used to realize the fast switching of the output channel under the condition of fault,so as to achieve the signal output without disturbance.This paper discusses the necessity of redundant AO module design,introduces the non-redundant model fault types,proposes the redundant design scheme,expounds the fault handing mechanism,and verifies the feasibility of the design through testing.
作者
严浩
丁捷
赵淄弘
刘滨
YAN Hao;DING Jie;ZHAO Zihong;LIU Bin(Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of China,Chengdu 610213,China)
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2018年第S1期102-106,共5页
Journal of Shanghai Jiaotong University
关键词
模拟量输出模块
分布式控制系统平台
热备架构
冗余
自动化
analog output module
distributed control system platform
hot standby framework
redundancy
automation
