摘要
为了提高安全性、可用性及容错能力,在安全性和可用性要求较高的系统中,采用余度计算机结构。余度管理是为了管理余度计算机的冗余资源,使计算机能有效地利用余度资源完成控制任务。通过对计算机输入/输出及内部资源分析研究,进行分类管理。余度管理采用表决加监控的方法,监控采用"取多数"的原则,表决是以监控结果为基础采用取"均值"或"中值"的方法。方法的特点是取有效通道信号,选取多数一致的信号为输出结果。信号正确率及稳定性远大于单机系统,其安全性、可用性得到大大提高。余度管理设计在某控制系统中经历了从原理件到目标件的各个阶段,得到了充分的测试和验证,实现了安全性、可用性的设计目标,达到了预期目的。
In the system with the higher security and availability requirement,the redundant computer configuration is usually used to further improve the security,availability and the fault-tolerant ability of the system.Redundancy management is to manage redundant resources of its computers,so that redundant computers can effectively use its resources to complete control tasks.By analyzing the computer input/output and internal resources,it carries out the classified management.The redundancy management adopts the method of voting plus monitoring,the principle of taking the majority is adopted in the monitoring.Based on the monitoring result,the voting adopts the method of mean value or median value.The characteristic of this method is to take signals of valid channels and select the most consistent signals as the output result.The accuracy and stability of the signal are much higher than that of the stand-alone system,and its security and availability are greatly improved.The redundancy management designing has experienced various stages from the principle part to the target part in a certain control system,it has been fully tested and verified.The designing goal of security and availability has been realized,and the expected purpose has been achieved.
作者
王颖
贾正强
WANG Ying;JIA Zheng-qiang(Xi'an Xiangyue Science,Industry and Trade Co.,Ltd.,Xi'an 710068,China;Xi'an Aeronautics Computing Technique Research Institute,AVIC,Xi'an 710068,China)
出处
《航空计算技术》
2019年第2期125-129,共5页
Aeronautical Computing Technique
关键词
容错系统
容错控制
余度计算机
余度管理
故障综合
fault-tolerant system
fault-tolerant control
fedundant computer
redundancy management
fault synthesis
