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Povečanje signala nihanja kotalnih ležajev z uporabo prilagodljive krmilne zanke za zmanjševanje šuma = Enhancing the vibration signal from rolling contact bearing using an adaptive closed-loop feedback control for wavelet de-noisingArenas, Jorge, P.Predstavljenih je bilo ze več metod s področij časa in frekvence za nadzorovanje razmer in ugotavljanje napak na opremi oz. postopkih. Nadzorovanje in ugotavljanje izvajamo z analizami in tolmačenjem ... signalov, pridobljenih z zaznavali in pretvorniki. Vendar pa vsako notranje nihanje, ki se prenasa preko sosednjih teles, v ozadju povzroči nihanje, v katerem se signal, ki ga potrebujemo za analize, pogosto izgubi, se posebej v zgodnejši fazi nastanka napake. Če je šumnost nihanja v ozadju prevelika oz. je signal nihanja ležajev premajhen, so lahko običajne metode, kot npr. analiza zmanjševanja šuma valovanja, neučinkovite pri izničenju suma takih signalov. V prispevku smo predstavili kombinacijo poveèanja prilagodljivega signala in spremembo valovanja za zmanjšanje šuma signala nihanja, izmerjenega na kotalnih ležajih. Kot postopek prilagodljivega uteznega krmiljenja smo uporabili algoritma normaliziranega najmanjšega srednjega kvadrata in rekurzivnih najmanjših kvadratov. Končni namen prilagodljivega filtra je bil zmanjšanje srednje kvadratične vrednosti signala napake, kar pomeni povečanje razmerja izstopnega signala in šuma sistema. Rezultati so pokazali, da povečanje prilagodljivega signala nihanja in sprememba valovanja povzročita najboljše razmerje signala in šuma. Kar pomeni, da lahko rezultat odkrije skrite sestave signala, ki so povezane neposredno z notranjimi okvarami v ležajih.Source: Strojniški vestnik = Journal of mechanical engineering. - ISSN 0039-2480 (Letn. 51, št. 4, 2005, str. 184-192)Type of material - article, component partPublish date - 2005Language - englishCOBISS.SI-ID - 8336411
Author
Arenas, Jorge, P.
Topics
ležaji kotalni |
signali nihanja |
analize šuma |
zanke krmilne |
kotalni ležaji |
šum |
merjenje |
merjenje
source: Strojniški vestnik = Journal of mechanical engineering. - ISSN 0039-2480 (Letn. 51, št. 4, 2005, str. 184-192)
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Arenas, Jorge, P. |
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