摘要
针对四重化冗余结构中由于备用态切换时间对系统性能影响的问题,对其进行改进,提出了四重化冗余并行结构,分析其可信性属性中最重要的可靠性和安全性。根据改进后理论的设计了一套高可信性的计算平台,计算模块使用PowerPC系列处理器,判别器使用FPGA(现场可编程门阵列),内部移植嵌入式软核NiosII,两套判别器在FPGA内部构成双核系统。另外在输出端使用竞争输出模块,实现无缝切换。结果表明,整个系统的可信性与实时性良好,适用于各种对可靠性和安全性要求很高的计算环境。
The standby-state switching time impacts system performance of quadruple modular redundancy structures. The paper describes a parallel structure for a quadruple modular redundancy system, and analyzes the reliability and security. The high-reliability computing platform design uses PowerPC serial processors, two sets of state evaluations based on field programmable gate array (FPGA) in a dual-core system and embedded software-core Nios II. The use of competitive output at the output module gives seamless switching. Tests show that the entire system provides excellent real-time reliability for use in all kinds of systems demanding reliability and safety.
出处
《清华大学学报(自然科学版)》
EI
CAS
CSCD
北大核心
2009年第11期1737-1740,共4页
Journal of Tsinghua University(Science and Technology)
基金
国家自然科学基金资助项目(10876049)
关键词
四重化冗余
高可信性
NIOS
II
竞争输出
quadruple modular redundancy
high reliability
Nios II
competitive output