Human-machine system reliability based on fault tree method

LI Chuang-qi1，2， JING Guo-xun1，2， ZHANG Yong-qiang1，2
（1. School of Safety Science & Engineering， Henan Polytechnic University， Jiaozuo 454003，China；
2. Henan Key Laboratory of Coal Mine Methane & Fire Prevention， Jiaozuo 454003， China）

Abstract： In order to solve the problem of improving the reliability of man-machine system design，the fault tree analysis method was applied to the human reliability analysis of system design，the reliability of man-machine system design by fault tree was analyzed from the human point. Firstly the minimal path sets of the fault tree were identified. The basic events which are impact on the reliability of man-machine system were analyzed，from the importance of structure，the probability importance，critical importance. The main factors that affect the man-machine system reliability were identified，more information was provided to product design for the production of man-machine system. The results show that human errors caused by the design are the key factors affecting system reliability ，among the factors that affect the reliability of man-machine system design.
Key words： man-machine system； fault tree analysis（FTA）； importance