摘要
为了解影响系统可靠性的环境因素,得到有益于系统安全工作的因素状态组合,同时进行逻辑推理,形成系统关于可靠性的等效响应结构。在空间故障树(SFT)框架内,建立系统关于可靠性的因素结构反分析框架;定义适用于系统因素结构反分析(IASFS)的01型SFT及其结构化表示方法,即逐条分析法(IIA),并给出过程和数学描述。推理结果表明,就系统可靠性与因素的状态关系而言,所给实例的系统可靠性因素结构为T=A1·A4+A3·A5+A1·A2·A3。用IIA能得到一个等效响应结构,该结构与被分析系统可靠性对工作环境因素变化的响应是相同的。
The ultimate purpose of this research is to understand the environmental factors which may potentially leave an impact on system reliability and explore various combinations of factors that will lead to proper system functioning. Furthermore,the frame on which our system reliability simulations are based will also be covered in this research. These three purposes have been achieved by building up the back analysis framework under SFT. Also,the authors define the method of the IASFS in the 01 type SFT. Its structured representation is called by IIA,and the process and mathematic description are given. By utilizing a series of logical deductions,the conclusion has come into limelight and drawn our attention that the relationship between reliability of the system examined and combinations of environmental factors can bedenoted as T = A1·A4＋ A3·A5＋ A1·A2·A3. An equivalent response structure was obtained by using the IIA method,the structure responds to work environment factors the way the system analyzed does.
出处
《中国安全科学学报》
CAS
CSCD
北大核心
2015年第6期51-56,共6页
China Safety Science Journal
基金
国家自然科学基金资助(61350003
51274110)
