Based on static logic or static failure mechanism , the traditional fault tree analysis is a effective method to analyze system reliability . but it can not be used to analyze the reliability of systems with dynamic randomicity and dependency , such as fault tolerant system , repairable system with redundance ( cold spare or hot spare ) , sequence dependency system and system with spare pool 傳統(tǒng)故障樹分析方法是基于靜態(tài)邏輯和靜態(tài)故障機理提出的一種有效的系統(tǒng)可靠性分析方法,不適用于對具有動態(tài)隨機性故障和相關性的系統(tǒng),如容錯系統(tǒng)、冗余(或冷、熱備件)可修系統(tǒng)、公用資源庫系統(tǒng),具有順序相關性的系統(tǒng)的可靠性分析。