人間-ロボット系の安全性評価 : 第3報,順序依存形故障論理の定量化について

Actual cases for which the output event depends on the sequence of occurrences of repairable input events are shown in the FTA of Human-Robot Systems. The necessity of the quantification of consecutive failure logic is emphasized. The exact and approximate methods of calculating the existence probability, and the expected number of occurrences of the output event are given. Input to the consecutive failure logic is assumed to consist of statistically independent, exponentially distributed and repairable basic events.