碩士 / 淡江大學 / 航空太空工程學系 / 92 / <p>The new generation of CD、DVD or hard disk drives is expected to pack high track densities and rotate at very high speeds. Therefore, any significant vibration peak will cause noticeably to the track mis-registration and disk drive failure. Many researches have focused on the vibration reduction of the disk drive deck. It is indeed the main aspect to reduce the vibration of a rotating disk system. Many effects have been made on designing the spring constant or damper for the suspensions of the deck. Instead of changing the spring constant or damping coefficient of the suspensions of the deck system, the objective of this research is to find an optimum position of an added mass-spring-damper vibration absorber system. The absorber may absorb part of the vibration from the deck and then reduce the peak of this system to further sooth the vibration of the rotating mechanism.</p><p>In this research the Lagrangian method is employed to derive the 2-D and 3-D equations of motion of the vibration deck. The forcing response of the original un-absorber-added system and the system with absorber is analyzed. Some typical locations of the absorber have been selected. Followed eigenvalue analysis is studied. Finally, the optimum method is applied and the best position of the absorber is found to be located on the corner of the deck. This research provides preliminary vibration reduction design for industries.</p>
| Identifer | oai:union.ndltd.org:TW/092TKU00295007 |
| Date | January 2004 |
| Creators | Huai-Lan Kuo, 郭蕙蘭 |
| Contributors | Yi-Ren Wang, 王怡仁 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 135 |
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