基于GTST-DMLD的系统功能退化分析

Analysis on Systematic Function Failure Based on GTST-DMLD

功能退化是系统安全性问题的重要部分。目标树-成功树-动态主逻辑图(GTST-DMLD)在二值逻辑的基础上采用模糊逻辑对系统进行动态模拟,提供了分析系统功能退化的有力工具。通过模糊化与解模糊化手段相结合估算系统的性能变化,辅助进行安全性分析。给出了简化电子刹车系统示例。

Function failure plays an important role in system safety problem. GTST - DMLD. applies fuzzsy logic to model system dynamic behavior based on binary logic and supplies a power tool to analyze function failure. The systematic function failure possibility is estimated through the combination of fuzzification and defuzzification means and the safety assessment is conducted. A simple electric brake system is introduced as an example in this paper.