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Časovno-frekvenčna analiza stanja zobniških gonil : doktorska disertacijaBelšak, Aleš, 1968-Zobniški prenosi nedvomno spadajo med tiste mehanske sisteme, v katerih se lahko pojavijo različne napake ali poškodbe, ki vplivajo na funkcionalnost gonila in s tem na celoten stroj ali napravo. ... Vendar pa lahko z določenimi metodami še pravočasno odkrijemo spremembe v gonilu in ustrezno ukrepamo, da bi s tem preprečili nenapovedane zaustavitve obratovanja. Analiza vibracij predstavlja enega izmed načinov, s katerim lahko določimo stanje gonila. V doktorski disertaciji sta obravnavana vpliv različnih napak zobniškega gonila na vibracije v gonilu in uporaba ustreznih analiz izmerjenih pospeškov vibracij, da bi ugotovili stanje posameznih elementov gonila. V ta namen so bile izvedene meritve enostopenjskega valjastega zobniškega gonila z napako oz. poškodbo in brez nje, pri različnih obratovalnih pogojih. Signali pospeškov, izmerjeni na ohišju gonila, so bili nato obdelani na osnovi družine časovno-frekvenčnih transformacij in z valčno analizo, ki je še posebej primerna z analizo nestacionarnih signalov. Rezultati kažejo, da je možno z omenjenimi analizami določiti stanje zobniške dvojice. Še posebej primerna za analizo pa je diskretna valčna analiza z namenskimi biortogonalnimi valčki, ki je v disertaciji razvita in uporabljena za filtriranje signala in izločevanje šumnosti z namenom poiskati lokalne spremembe v signalu na nivoju posameznega zoba zobnika. Omenjena družina orodij za analizo predstavlja zmogljivo orodje, vendar pa je za ustrezne rezultate treba opraviti tudi ustrezen zajem signala. Tako lahko s primerno tehniko merjenja vibracij in nato ustrezno analizo signala dokaj zanesljivo napovemo oz. vrednotimo stanje v zobniškem gonilu.Type of material - dissertation ; adult, seriousPublication and manufacture - Maribor : [A. Belšak], 2006Language - slovenianCOBISS.SI-ID - 230589952
Author
Belšak, Aleš, 1968-
Other authors
Flašker, Jože
Topics
Zobniška gonila |
Disertacije |
zobniki |
vibracije |
diagnostika |
časovno-frekvenčna analiza |
valčna analiza
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Database name | Field | Year |
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Belšak, Aleš, 1968- | 20436 |
Flašker, Jože | 03014 |
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