摘要
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(IFTOPSIS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。
Aiming at different kinds of actuator faults in control system,a method of combining improved fuzzy analytic hierarchy process with technique for order preference by similarity to an ideal solution(IFAHP-TOPSIS)was proposed.Analytic hierarchy process(AHP)was used to establish the risk assessment index system,and IFAHP was used to calculate complex weight of risk assessment index by subjective and objective dynamic combination weighting method.Then,the final sequence of each failure mode was obtained using improved fuzzy technique for order preference by similarity to an ideal solution(IFTOPSIS).Finally,numerical analysis was carried out by taking the pneumatic actuator in a gas turbine power plant as an example.Results show that evaluation results of the proposed IFAHP-TOPSIS method are basically consistent with actual situation.Compared with the traditional AHP-TOPSIS method,it can deal with uncertain factors in the risk assessment process,reduce subjective sensitivity,solve the reverse order problem of the traditional TOPSIS method,and improve the accuracy of the risk assessment method.
作者
张文广
沈炀智
李浩瀚
袁桂丽
ZHANG Wenguang;SHEN Yangzhi;LI Haohan;YUAN Guili(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University,Beijing 102206,China;School of Control and Computer Engineering,North China Electric Power University,Beijing 102206,China)
出处
《动力工程学报》
CAS
CSCD
北大核心
2021年第9期749-757,共9页
Journal of Chinese Society of Power Engineering
基金
国家科技重大专项资助项目(2017-V-0011-0063)。
