分布式少数表决与多数表决冗余方案中的系统可靠性、容错性和设计指标权衡
System Reliability, Fault Tolerance and Design Metrics Tradeoffs in the Distributed Minority and Majority Voting Based Redundancy Scheme
AI总结：
本文研究了基于分布式少数表决与多数表决冗余方案的系统可靠性、容错性和设计指标权衡，比较了不同规模多数逻辑组与少数逻辑组的冗余方案性能，发现3-of-M冗余方案在可靠性、容错性和设计指标优化方面优于其他方案。
摘要：
分布式少数表决与多数表决冗余（DMMR）方案最近被提出作为传统N模块冗余（NMR）方案在关键任务/安全电路和系统物理设计中的高效替代方案。DMMR方案在容错性和设计指标方面相比NMR方案有显著改进，尽管以系统可靠性略有下降为代价。本文研究了当DMMR方案的多数逻辑组相对于少数逻辑组增大时，DMMR方案与NMR方案在系统可靠性、容错性和设计指标方面的权衡。一些DMMR和NMR系统使用32/28nm CMOS工艺实现并进行了比较。结果表明，5-of-M DMMR系统在容错性方面与传统NMR系统相似或更优，同时需要相似或更少的功能模块，并同时实现了设计指标的优化。然而，3-of-M DMMR系统在容错性和设计指标优化方面优于可比的NMR和5-of-M DMMR系统。就系统可靠性而言，NMR系统紧随其后，其次是5-of-M DMMR系统，最后是3-of-M DMMR系统。综上所述，从系统可靠性、容错性和设计指标综合角度来看，3-of-M DMMR系统更适用于实现关键任务/安全电路和系统。
英文摘要：
The distributed minority and majority voting based redundancy (DMMR) scheme was recently proposed as an efficient alternative to the conventional N-modular redundancy (NMR) scheme for the physical design of mission/safety-critical circuits and systems. The DMMR scheme enables significant improvements in fault tolerance and design metrics compared to the NMR scheme albeit at the expense of a slight decrease in the system reliability. In this context, this paper studies the system reliability, fault tolerance and design metrics tradeoffs in the DMMR scheme compared to the NMR scheme when the majority logic group of the DMMR scheme is increased in size relative to the minority logic group. Some example DMMR and NMR systems were realized using a 32/28nm CMOS process and compared. The results show that 5-of-M DMMR systems have a similar or better fault tolerance whilst requiring similar or fewer function modules than their counterpart NMR systems and simultaneously achieve optimizations in design metrics. Nevertheless, 3-of-M DMMR systems have the upper hand with respect to fault tolerance and design metrics optimizations than the comparable NMR and 5-of-M DMMR systems. With regard to system reliability, NMR systems are closely followed by 5-of-M DMMR systems which are closely followed by 3-of-M DMMR systems. The verdict is 3-of-M DMMR systems are preferable to implement higher levels of redundancy from a combined system reliability, fault tolerance and design metrics perspective to realize mission/safety-critical circuits and systems.
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