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Wysłany: Wto 12:37, 23 Lis 2010
Temat postu: uggs ireland Pump fault tree and fuzzy comprehensi
Pump fault tree and fuzzy comprehensive evaluation of portfolio analysis
) 4} level set calculation is taken as V = (0.9,
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,0.6,0.3,0.1) fuzzy comprehensive evaluation to determine the factors in addition to the weight set, level set, they also need to determine membership coefficient. That,
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, one, that factor \ For each factor,
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, \ Table 1 Analysis of 89 oil pump part of the results of quantitative FTA Table1epartresultsoffaulttreerationanalysisonoil-wellpump for \ go one by one fuzzy set to meet the condition that 4Σr, = 1, where 1,
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,2, ... . J = 1 the actual running of a pump, according to experts and field technicians fuzzy statistical test data, the calculated evaluation matrix R (\ 20.0J is, fuzzy comprehensive judge the outcome of B is B = A ・ R = (0.6604, 0.2186,0.1210,
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,0.0) fuzzy comprehensive evaluation results = B. VD = 0.7618 for 0.6 <C <0.9, so the reliability of the pump evaluated as \ 3 Conclusions (1) example shows that the author's fault tree analysis and fuzzy comprehensive evaluation method is used to pump combination of reliability evaluation is feasible. (2) the actual analysis, it can increase or decrease depending on the circumstances fuzzy evaluation factors, further analysis if required, can be second-order fuzzy comprehensive evaluation. (3) The fault tree analysis and fuzzy evaluation of both procedures, or the preparation of general-purpose software can be used to calculate, it is a good on-site application. (4) portfolio analysis results can be used to develop technological innovation to improve pump reliability measures . References Chen Lin, Wang Guoli, Hui-Rong Meng, et al. Pump fault tree analysis [j]. Petroleum Technology, 1997,18 (3) :145-151. Zhao public, Zhang Fan. Pump reliability analysis [J] . Petroleum Technology, 1996,17 (2) :91-100. He Zhongxiong. Fuzzy mathematics and its methods fM]. Tianjin: Tianjin Science and Technology Press ,1990:50-71. KellerLV. Furtherapplicationoffuzzylogictoreliabilityassessmentandsafetyanalysis [J]. MicroelectronReliab, 1989 , 3 (29) :399-404. CaiKaiyuan. FuzzyvariablesaaSisforatheoryoffuzzyre-liabilityinthetx ~ ibilitycontext [J]. FuzzySetsandSys-terns, 1991,42 (3) :267-286. XieKaiyan. Thereliabilitydesignresearchofcontrolsysteminlargeandmiddlesizewindturbines [J]. MechanicalandElectricalEngineering, 1998,25 (1 ) :1-2. XU Pei-de. Missile performance analysis of fuzzy comprehensive evaluation model [J]. Model Systems and Mathematics, 1990,4 (1) :53-58. Zhouyu Yang, Han-Ping Chen, Wang Wei Zhe , et al. Grey Model Diagnosis [J]. CSEE, 2000,20 (6) :146-151. Jin Guoliang, Chen Lin, Zhang Ailin, and other reliability and optimization and its application in the petroleum industry [M]. Beijing : China Science and Technology Press ,1992:224-246. (Received 27 back to the date of 2002-1 2003-0508 Bu Yang Zhuo Editor)] j] J] 1] j] j] jl-l Bu J Ye- _
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