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Most existing methods for feature extraction tend to assume that all sensors have uniform sampling rates. However, complex mechanical systems use multirate sensors. These methods use upsampling for data preprocessing to ensure that all signals at the same scale can cause certain time\u2010frequency features to vanish. To address these issues, this paper proposes a Multirate Sensor Information Fusion Strategy (MRSIFS) for multitask fault diagnosis. The proposed method is based on multidimensional convolution blocks incorporating multisource information fusion into the convolutional neural network (CNN) architecture. Features with different sampling rates from the raw signals are run through a multichannel parallel fault feature extraction framework for fault diagnosis. Additionally, time\u2010frequency analysis technology is used to reveal fault information in the association between time and frequency domains. The simulation platform\u2019s experimental results show that the proposed multitask model achieves higher diagnosis accuracy than the existing methods. Furthermore, manual feature selection for each task becomes unnecessary in MRSIFS, which has the potential toward a general\u2010purpose framework.<\/jats:p>","DOI":"10.1155\/2021\/9952450","type":"journal-article","created":{"date-parts":[[2021,6,2]],"date-time":"2021-06-02T01:54:24Z","timestamp":1622598864000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["A Multirate Sensor Information Fusion Strategy for Multitask Fault Diagnosis Based on Convolutional Neural Network"],"prefix":"10.1155","volume":"2021","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0365-9818","authenticated-orcid":false,"given":"Xiangkai","family":"Ma","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0048-432X","authenticated-orcid":false,"given":"Pei","family":"Wang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4396-3339","authenticated-orcid":false,"given":"Bozhou","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0762-687X","authenticated-orcid":false,"given":"Ming","family":"Sun","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2021,6]]},"reference":[{"key":"e_1_2_9_1_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ymssp.2015.09.032"},{"key":"e_1_2_9_2_2","doi-asserted-by":"publisher","DOI":"10.1109\/TIE.2015.2464297"},{"key":"e_1_2_9_3_2","doi-asserted-by":"publisher","DOI":"10.1109\/TIE.2018.2844805"},{"key":"e_1_2_9_4_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ymssp.2012.08.019"},{"key":"e_1_2_9_5_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.apenergy.2013.09.043"},{"key":"e_1_2_9_6_2","doi-asserted-by":"publisher","DOI":"10.1109\/jstqe.2020.2988603"},{"key":"e_1_2_9_7_2","doi-asserted-by":"publisher","DOI":"10.1364\/BOE.8.002732"},{"key":"e_1_2_9_8_2","doi-asserted-by":"publisher","DOI":"10.1007\/s10710-017-9314-z"},{"key":"e_1_2_9_9_2","doi-asserted-by":"publisher","DOI":"10.1038\/nature14539"},{"key":"e_1_2_9_10_2","doi-asserted-by":"publisher","DOI":"10.1109\/TIE.2017.2774777"},{"key":"e_1_2_9_11_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ymssp.2018.03.025"},{"key":"e_1_2_9_12_2","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2018.2888842"},{"key":"e_1_2_9_13_2","doi-asserted-by":"publisher","DOI":"10.1155\/2015\/390134"},{"key":"e_1_2_9_14_2","doi-asserted-by":"publisher","DOI":"10.3390\/s17020425"},{"key":"e_1_2_9_15_2","doi-asserted-by":"publisher","DOI":"10.1109\/TIM.2017.2674738"},{"key":"e_1_2_9_16_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.measurement.2020.108478"},{"key":"e_1_2_9_17_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.measurement.2020.108086"},{"key":"e_1_2_9_18_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.measurement.2020.108122"},{"key":"e_1_2_9_19_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jfranklin.2020.04.024"},{"key":"e_1_2_9_20_2","doi-asserted-by":"crossref","unstructured":"HelwigN. 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