Safety Analysis of Inertial Navigation System Based on Dynamic Fault Tree
Xiaogang Zhou · Electronics Optics & Control · 2011
Inertial navigation system is the critical component of missile,and present dynamic character during its work.For getting the possibility of mishap of inertial navigation and find its weak link,Dynamic Fault Tree(DFT) model of collapse of inertial platform is built based on safety analysis used Dynamic Fault Tree.Then the model is modularized into independent static subtrees and dynamic subtrees;Binary Decision Diagrams(BDD) and Markov method are applied to process them respectively;the possibility of collapse of inertial platform in all its life is get after comprehensive analysis.Though simulation experiment,the major cause of collapse of inertial platform is found,and the applicability of DFT in the safety analysis of inertial navigation system is validated.