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专利名称：Method for evaluating the reliability of a
trend analysis, effected by means of theKriging technique on an operating quantityof machinery, indicative of the presence ofdefects in the machinery itself
发明人：Mazzieri, Claudio,Lucifredi, Alerano,Rossi,
Massimiliano
申请号：EP98114291.2申请日：19980730公开号：EP06209A3公开日：20000223
专利附图：
摘要：The method comprises the steps of: acquiring (100) a current value of anoperating quantity of the machinery; calculating (101) a first estimated value of theoperating quantity by means of the Kriging technique assuming that the local trend ofthe values of the operating quantity is linear; calculating (140) a first error value on thebasis of the current value and the first estimated value of the operating quantity;comparing (160) the first error value with at least one first predetermined thresholdvalue; accepting (170) the first estimated value of the operating quantity whenever thefirst error value has a first predetermined relationship with the first predeterminedthreshold value; calculating (200) a second estimated value of the operating quantity bymeans of the Kriging technique assuming that the local trend of the values of theoperating quantity is constant whenever the first error value does not have the said firstpredetermined relationship with the first predetermined threshold value; calculating(140) a second error value on the basis of the current value and the second estimatedvalue of the operating quantity; comparing (160) the second error value with at least onesecond predetermined threshold value; and accepting (170) the second estimated value
of the operating quantity whenever the second error value has a second predeterminedrelationship with the second predetermined threshold value.
申请人：FINMECCANICA S.p.A. AZIENDA ANSALDO
地址：Piazza Carignano, 2 16128 Genova IT
国籍：IT
代理机构：Cerbaro, Elena, Dr.
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