摘要
在建立高可靠性控制系统的过程中,提出了一种基于软件冗余的容错模式——流程对模式,该模式虽然具有故障恢复时间短等优点,但是无法解决校验点信息在传输过程中出错或接收不完全的问题。针对上述问题应用LDPC码将主服务器发送到备用服务器中的校验点信息进行通信编码,并采用RS码将备用服务器接收到的校验点信息进行本地编码,分析结果表明改进方法可以有效解决前述问题,进一步增强了控制系统的可靠性。
During the process of constructing control system with high reliability, researchers put forward a kind of fault-tolerant pattern based on software redundancy called as process pair pattern. Although this pattern has many advantages such as low fault recovery time, the problem that check point messages are with is the error during transmission process or not integral when reaching destination can not be solved. In order to solve the problem, this paper uses LDPC code to encode data information from main servers to backup storage devices, and RS code is used to encode the check point messages received by backup servers. Analysis result proves improved method can effectively solve the problem to strengthen the reliability of the control system.
出处
《计算机工程》
CAS
CSCD
北大核心
2007年第11期256-258,共3页
Computer Engineering
基金
国家"973"计划基金资助项目(2004CB318000)
