Research On Analysis Of Large Fault Tree Software Based On VC

Fault tree analysis(FTA), an important branch in systems reliability engineering,is a common practical technique used in evaluating reliability and safety for large-complex systems at home and abroad presently. With gradual advancing techniques in computer, FTA is in a state of sound development.It has become a new hot research for reliability analyzer to study rapid and large-scale FTA algorithm and software by using computer. But problems of combinatorial explosion that computational complexity increases with the size of fault tree by exponential growth, visual software developed and application domains widened are awaiting to be further researched studies on efficient FTA algorithm play a more important role in widening domains of application of FTA and developing large-scale software for reliability, maintainability and safety. This paper gives an elaborate study on these problems.Computer-aided FTA theory has been expounded in this paper.What's more the reciprocal transformation rule for main parameters in FTA has been studied,Also a new method using linked-list for fault tree qualitative analysis algorithm and applying transfer-event and disjoint method for the NP problem of fault tree quantitative analysis is presented here.The transfer-event has been applied to solve the drawing and outputting of large-scale fault tree. Based on wndows interface a design and implementation method of computer aided active FTA automatic constructing and drawing method was presented. By use of C++ language and VC6.0,a FTA software has been successfully developed for fault tree qualitative and quantitative analysis. This software is fully compatible with Windows operation system.Through testing many examples of fault trees, it is confirmed that the software has advantages of friendly interface, convenience, saving memory and rapidity.