{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T12:47:15Z","timestamp":1753879635087,"version":"3.41.2"},"reference-count":28,"publisher":"ASME International","issue":"4","content-domain":{"domain":["asmedigitalcollection.asme.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2009,12,1]]},"abstract":"<jats:p>A study is presented on applications of computational intelligence (CI) techniques for monitoring and prognostics of machinery conditions. The machine condition is assessed through an energy-based feature, termed as \u201cenergy index,\u201d extracted from the vibration signals. The progression of the \u201cmonitoring index\u201d is predicted using the CI techniques, namely, recursive neural network (RNN), adaptive neurofuzzy inference system (ANFIS), and support vector regression (SVR). The proposed procedures have been evaluated through benchmark data sets for one-step-ahead prediction. The prognostic effectiveness of the techniques has been illustrated through vibration data set of a helicopter drivetrain system gearbox. The prediction performance of SVR was better than RNN and ANFIS. The improved performance of SVR can be attributed to its inherently better generalization capability. The training time of SVR was substantially higher than RNN and ANFIS. The results are helpful in understanding the relationship of machine conditions, the corresponding indicating feature, the level of damage or degradation, and their progression.<\/jats:p>","DOI":"10.1115\/1.3249574","type":"journal-article","created":{"date-parts":[[2009,11,24]],"date-time":"2009-11-24T18:46:55Z","timestamp":1259088415000},"update-policy":"https:\/\/doi.org\/10.1115\/crossmarkpolicy-asme","source":"Crossref","is-referenced-by-count":10,"title":["Prognostics of Machine Condition Using Energy Based Monitoring Index and Computational Intelligence"],"prefix":"10.1115","volume":"9","author":[{"given":"B.","family":"Samanta","sequence":"first","affiliation":[{"name":"Mem. ASME"},{"name":"Department of Mechanical Engineering, Villanova University, 800 Lancaster Avenue, Villanova, PA 19085"}]},{"given":"C.","family":"Nataraj","sequence":"additional","affiliation":[{"name":"Mem. 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