基于IFAHP-TOPSIS方法的控制系统执行器风险评估

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针对控制系统执行器的各类故障,提出了改进模糊层次分析与逼近理想解排序相结合的方法(IFAHP-TOPSIS方法).采用层次分析法建立了风险评估指标体系;基于IFAHP,采用主、客观动态组合赋权法计算风险评估指标的复合权重;运用改进模糊逼近理想解排序方法(IFTOP-SIS方法)得到各故障模式的最终序位;以某燃气轮机电厂的气动执行器为例进行数值分析.结果 表明:所提IFAHP-TOPSIS方法的评估结果与实际情况基本相符,与传统层次分析法结合逼近理想解排序方法(AHP-TOPSIS方法)相比,该方法能够处理风险评估过程中的不确定因素,降低主观敏感度,解决传统TOPSIS方法的逆序问题,提高风险评估方法的准确性.
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