基于模块化思想的复杂故障树重要度算法研究

Importance Algorithm Based on Modularization Idea for Complex Fault Trees

如何高效地计算大规模故障树的重要度是当前可靠性工程领域的难点之一。介绍了计算复杂故障树重要度的基本原理,针对当前重要度算法存在复杂度高、效率低下等问题,在应用模块化思想进行故障树分析的基础上,考虑共因事件对计算规模的影响,实现了一种更高效的重要度算法,并验证了该算法的正确性与有效性。

High-efficient importance algorithm for large-scale fault trees with common cause events has become one of the difficulties in the field of reliability engineering. The basic principles of complex fault trees importance calculating are described in this article. In order to overcome the high-complexity and low-efficiency of existing importance algorithm, a new and more efficient method is proposed based on modularization idea, considering the influence of common cause events on calculating complexity. And the validity of this algorithm is proved.