负载均担并联系统模型及可靠性分析

针对实际中负载均担并联系统的可靠性受系统总负载和部件承载能力的影响,通过分析实际中部件的承载能力情况建立相应的部件失效率变化模型,利用马尔可夫过程建立负载均担不可修并联系统的通用可靠性模型。从失效率变化模型出发,根据总负载与部件承载能力的不同关系,将系统的通用可靠性模型细分为理想承载模型、最大承载模型和临界承载模型,并计算出各个模型下系统可靠度。以部件独立并联系统和m/n:(F)表决系统为例证,验证模型及计算结果的正确性。

Models and Reliability Analysis of Load-Sharing Parallel Systems

The reliability of an actual load-sharing parallel system is greatly affected by total load of the system and load capacity of components. A failure rate variation model of components of unrepaired load-sharing parallel systems is established by analyzing the components' load capacity. Through Markov process, the universal reliability model of load-sharing parallel systems is established. According to the failure rate variation model and the relations between total load of system and load capacity of components, the universal reliability model is classified into ideal load capacity model, maximum load capacity model, and critical load capacity model. The reliability of these three models is derived in this paper. The models and calculation results are verified via case study the reliability analysis of parallel systems with independent components and m/n:(F) voting system.