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Effects of vibration on the off-track positioning of the piezoelectric head gimbal assembly in hard disk drive |
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| รหัสดีโอไอ | |
| Creator | 1. Nitipan Vittayaphadung 2. Pruittikorn Smithmaitrie |
| Title | Effects of vibration on the off-track positioning of the piezoelectric head gimbal assembly in hard disk drive |
| Publisher | Faculty of Engineering, Khon Kaen Univeristy |
| Publication Year | 2555 |
| Journal Title | KKU Engineering Journal |
| Journal Vol. | 39 |
| Journal No. | 1 |
| Page no. | 1-10 |
| Keyword | Vibrations, Piezoelectric head gimbal assembly,Finite element model,Experiment validation |
| ISSN | 0125-8573 |
| Abstract | The piezoelectric head gimbal assembly was designed to compensate the off-track vibration in a hard disk drive. The off-track vibration caused by the torsion and sway vibration modes induces the read-write error rate. Thus, vibration modes of the piezoelectric head gimbal assembly that may cause the off-track positioning are reported in this work. The vibration characteristic of the piezoelectric head gimbal assembly is studied by using the finite element method. The finite element model is validated by compared with the experimental result. The frequency response function result of the experiment was measured by using the laser doppler vibrometer at the side of the slider in the horizontal plane. The comparison of natural frequencies and vibration mode shapes shows good agreement between the finite element and experimental results. This research provides a procedure and a validated model of the piezoelectric head gimbal assembly which is useful for further design and development of its structure and the control system to reduce the read-write error due to the off-track vibration. |
