表决冗余系统可靠性与安全性研究

Research on reliability and security of vote redundancy system

表决冗余设计技术是冗余设计技术的延伸和拓展,对可靠性的提高是无庸置疑的,但与冗余设计技术相比,在可靠性与安全性方面孰优孰劣,未见有相关的定论,甚至于还有一些误解,因此很有必要对表决冗余系统与冗余系统在可靠性与安全性方面的关系作出确切的结论。作者根据自己的研究和应用经验,明确提出了冗余系统比表决系统更能提高系统的可靠性,而表决系统比冗余系统更能提高系统的安全性的论断,并从表决冗余系统和冗余系统的数学模型入手利用数学论证方法给出了关于可靠性论断的证明,并结合实例对该论断进行了仿真分析。

The vote redundancy design technology is a redundancy design technology extending with the develop-ment.It is does not need doubt to the reliable enhancement,but compares with the redundancy design technology,in the reliability and secure aspect which one is good and which one is bad,has not seen the correlation conclusion,even also has some misunderstandings.Therefore it is necessary to vote the redundancy very much systematic and the redundant system draws the accurate conclusion in reliable and the secure aspect relations.According to the research and the applica-tion experience,the judgment is proposed,that is the redundant system can enhance the reliability compared to the vote system,while the vote system can enhance the security compared to the redundant system.And from mathematical model of the vote redundant system and the redundant system the testify of the judgment is given by mathematics demonstration method.Combining with the examples,the simulation analysis to this judgment is also carried out.