Estimate of Remaining Useful Life using Prognostics and Health Management Technique on Hard Disk Drive
| Autor: | Yu-Xiu Huang, 黃御修 |
|---|---|
| Rok vydání: | 2012 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 100 Development of reliability technique which can identify failure precursors in early product life time can help product designer to obtain early failure information for design improvement and also can help customers to prevent impact from unexpected catastrophic failure. In this study, hard disk drives (HDD) was selected for reliability analysis. The study applies Prognostics and Health Management (PHM) technique, using failure precursor as an early indication of true product failure. The techniques of Failure Modes, Mechanisms and Effects Analysis (FMMEA), field test and Self-Monitoring Analysis and Reporting Technology (SMART) for HDD, are used to confirm early abnormal signs before occurrence of true failure. Quantitative indicators are established for the identified failure precursors. The random variable of time-to-failure-precursor of HDD is validated having properties of Weibull distribution. Remaining Useful Life (RUL) is predicted based on conditional reliability of the TTF of precursor given the result of PHM monitoring. The Residual MTTF is also developed to represent mean time of remaining useful life. The prognostics process developed in this study combined with the methods developed for remaining useful life prediction will achieve the purpose of product health management for customer protection. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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