3433 KB40 KB199920252017Chen, XihuiCheng, GangLi, HongyuLi, Yongštevilka:1letnik:63str. 45-55ISSN:0039-2480COBISSID_HOST:15212827URN:URN:NBN:SI:doc-ZIV3S4JNenZveza strojnih inženirjev in tehnikov Slovenije etc.Strojniški vestnikdiagnosticiranje napakfraktalna škatlasta dimenzijaplanetna gonilavečskalna analizaResearch of planetary gear fault diagnosis based on multi-scale fractal box dimension of CEEMD and ELM|The planetary gear is the most critical part of a drive transmission system, and its faults will affect the reliability of the equipment, and even cause accidents. Therefore, it is of great significance to study the fault diagnosis of the planetary gear. A method of planetary gear fault diagnosis based on the multi-scale fractal box dimension of complementary ensemble empirical mode decomposition (CEEMD) and extreme learning machine (ELM) is proposed. The original vibration signal is decomposed by CEEMD, and a series of intrinsic mode functions (IMFs) are obtained. Some effective IMFs are extracted, and their reconstructed signal associated with the feature information is obtained. The reconstructed signal is analysed with multi-scale analysis, and the fault feature information contained in the signals with different scales is quantified and extracted via a fractal box dimension. The status recognition of planetary gear is achieved by combining ELM. The experiments show that the proposed method is effective at diagnosing planetary gear faultsPlanetna gonila so razširjena v raznovrstnih pogonih velikih elektromehanskih naprav in predstavljajo najbolj kritični del sistema za prenos moči. Okvare planetnega gonila vplivajo na zanesljivost opreme in lahko privedejo tudi do nesreč, diagnostika okvar planetnih gonil pa je zato pomembno raziskovalno področje. Predlagana je metoda za diagnosticiranje okvar planetnih gonil na podlagi večskalne fraktalne škatlaste dimenzije empirične dekompozicije oblik s komplementarnimi seti (CEEMD) in nevronske mreže % stroja za ekstremno učenje (ELM). Konstrukcija planetnega gonila je kompleksna in parametri delovanja kot sta hitrost in obremenitev se nenehno spreminjajo, zato je signal vibracij planetnega gonila nestacionaren ter ima lastnosti frekvenčne (FM) in amplitudne modulacije (AM)TEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Ljubljani, Fakulteta za strojništvo