{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T01:04:23Z","timestamp":1760231063642,"version":"build-2065373602"},"reference-count":38,"publisher":"MDPI AG","issue":"17","license":[{"start":{"date-parts":[[2022,8,23]],"date-time":"2022-08-23T00:00:00Z","timestamp":1661212800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Science Foundation of China","award":["51665013","20212BAB204007","YC2020-S335","YC2021-S422","GJJ200616"],"award-info":[{"award-number":["51665013","20212BAB204007","YC2020-S335","YC2021-S422","GJJ200616"]}]},{"name":"Natural Science Foundation of Jiangxi Province","award":["51665013","20212BAB204007","YC2020-S335","YC2021-S422","GJJ200616"],"award-info":[{"award-number":["51665013","20212BAB204007","YC2020-S335","YC2021-S422","GJJ200616"]}]},{"name":"Jiangxi Province Graduate Student Innovation Project","award":["51665013","20212BAB204007","YC2020-S335","YC2021-S422","GJJ200616"],"award-info":[{"award-number":["51665013","20212BAB204007","YC2020-S335","YC2021-S422","GJJ200616"]}]},{"name":"Science Research Project of the Education Department of Jiangxi Province","award":["51665013","20212BAB204007","YC2020-S335","YC2021-S422","GJJ200616"],"award-info":[{"award-number":["51665013","20212BAB204007","YC2020-S335","YC2021-S422","GJJ200616"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>For the sake of addressing the issue of extracting multiple features embedded in a noise-heavy vibration signal for bearing compound fault diagnosis, a novel model based on improved adaptive chirp mode decomposition (IACMD) and sparse representation, namely IACMDSR, is developed in this paper. Firstly, the IACMD is employed to simultaneously separate the distinct fault types and extract multiple resonance frequencies induced by them. Next, an adaptive bilateral wavelet hyper-dictionary that digs deeper into the periodicity and waveform characteristics exhibited by the real fault impulse response is constructed to identify and reconstruct each type of fault-induced feature with the help of the orthogonal matching pursuit (OMP) algorithm. Finally, the fault characteristic frequency can be detected via an envelope demodulation analysis of the reconstructed signal. A simulation and two sets of experimental results confirm that the developed IACMDSR model is a powerful and versatile tool and consistently outperforms the leading MCKDSR and MCKDMWF models. Furthermore, the developed model has satisfactory capability in practical applications because the IACMD has no requirement for the input number of the signal components and the adaptive bilateral wavelet is powerfully matched to the real fault-induced impulse response.<\/jats:p>","DOI":"10.3390\/s22176330","type":"journal-article","created":{"date-parts":[[2022,8,24]],"date-time":"2022-08-24T02:55:34Z","timestamp":1661309734000},"page":"6330","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Multiple Enhanced Sparse Representation via IACMDSR Model for Bearing Compound Fault Diagnosis"],"prefix":"10.3390","volume":"22","author":[{"given":"Long","family":"Zhang","sequence":"first","affiliation":[{"name":"School of Mechatronics & Vehicle Engineering, East China Jiaotong University, Nanchang 330013, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lijuan","family":"Zhao","sequence":"additional","affiliation":[{"name":"School of Mechatronics & Vehicle Engineering, East China Jiaotong University, Nanchang 330013, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chaobing","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Mechatronics & Vehicle Engineering, East China Jiaotong University, Nanchang 330013, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qian","family":"Xiao","sequence":"additional","affiliation":[{"name":"School of Mechatronics & Vehicle Engineering, East China Jiaotong University, Nanchang 330013, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Haoyang","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Mechatronics & Vehicle Engineering, East China Jiaotong University, Nanchang 330013, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hao","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Mechatronics & Vehicle Engineering, East China Jiaotong University, Nanchang 330013, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yanqing","family":"Hu","sequence":"additional","affiliation":[{"name":"School of Mechatronics & Vehicle Engineering, East China Jiaotong University, Nanchang 330013, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,8,23]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Xu, G.W., Liu, M., Jiang, Z.F., Soffker, D., and Shen, W.M. 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