In Situ Measurement of Seeking Speed and Seeking Induced Head-Disk Interface Instability in Hard Disk Drives
This paper investigated the instability of head-disk interface caused by the voice coil motor (VCM) end crashing the crash stop during the seeking of magnetic head. To make the whole process of that clear, an in situ measurement method based on maximum likelihood estimation and extended Kalman filte...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2015/989854 |
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| _version_ | 1832567680690814976 |
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| author | Yu Wang Xiongfei Wei Yanyang Zi Kwok-Leung Tsui |
| author_facet | Yu Wang Xiongfei Wei Yanyang Zi Kwok-Leung Tsui |
| author_sort | Yu Wang |
| collection | DOAJ |
| description | This paper investigated the instability of head-disk interface caused by the voice coil motor (VCM) end crashing the crash stop during the seeking of magnetic head. To make the whole process of that clear, an in situ measurement method based on maximum likelihood estimation and extended Kalman filter for seeking speed at component level was developed first and was then calibrated by a high speed camera. Given a crash between VCM end and crash stop that may be a consequence of the continuous increasing seeking speed, the seeking speed was carefully controlled by using our developed method to find a critical value that may induce vigorous head-disk interface instability. Acoustic emission sensor and laser Doppler vibrometer were used to capture the transient dynamic behaviors of magnetic head when the crash is happening. Damage analysis and mode identification were carried out to reveal the relationship between the damage patterns on disk surface and head dynamics. The results of this study are helpful to optimize the track seeking profile during the HDD operation, as well as the design of components such as head and head arm. |
| format | Article |
| id | doaj-art-b8199f2659f64c73a886e0cacf1eb1ac |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-b8199f2659f64c73a886e0cacf1eb1ac2025-02-03T01:00:50ZengWileyShock and Vibration1070-96221875-92032015-01-01201510.1155/2015/989854989854In Situ Measurement of Seeking Speed and Seeking Induced Head-Disk Interface Instability in Hard Disk DrivesYu Wang0Xiongfei Wei1Yanyang Zi2Kwok-Leung Tsui3School of Mechanical Engineering, State Key Laboratory for Manufacturing and Systems Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaSAE Technologies Development (Dongguan) Co. Ltd., Dongguan 523087, ChinaSchool of Mechanical Engineering, State Key Laboratory for Manufacturing and Systems Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaDepartment of Systems Engineering and Engineering Management, City University of Hong Kong, Hong KongThis paper investigated the instability of head-disk interface caused by the voice coil motor (VCM) end crashing the crash stop during the seeking of magnetic head. To make the whole process of that clear, an in situ measurement method based on maximum likelihood estimation and extended Kalman filter for seeking speed at component level was developed first and was then calibrated by a high speed camera. Given a crash between VCM end and crash stop that may be a consequence of the continuous increasing seeking speed, the seeking speed was carefully controlled by using our developed method to find a critical value that may induce vigorous head-disk interface instability. Acoustic emission sensor and laser Doppler vibrometer were used to capture the transient dynamic behaviors of magnetic head when the crash is happening. Damage analysis and mode identification were carried out to reveal the relationship between the damage patterns on disk surface and head dynamics. The results of this study are helpful to optimize the track seeking profile during the HDD operation, as well as the design of components such as head and head arm.http://dx.doi.org/10.1155/2015/989854 |
| spellingShingle | Yu Wang Xiongfei Wei Yanyang Zi Kwok-Leung Tsui In Situ Measurement of Seeking Speed and Seeking Induced Head-Disk Interface Instability in Hard Disk Drives Shock and Vibration |
| title | In Situ Measurement of Seeking Speed and Seeking Induced Head-Disk Interface Instability in Hard Disk Drives |
| title_full | In Situ Measurement of Seeking Speed and Seeking Induced Head-Disk Interface Instability in Hard Disk Drives |
| title_fullStr | In Situ Measurement of Seeking Speed and Seeking Induced Head-Disk Interface Instability in Hard Disk Drives |
| title_full_unstemmed | In Situ Measurement of Seeking Speed and Seeking Induced Head-Disk Interface Instability in Hard Disk Drives |
| title_short | In Situ Measurement of Seeking Speed and Seeking Induced Head-Disk Interface Instability in Hard Disk Drives |
| title_sort | in situ measurement of seeking speed and seeking induced head disk interface instability in hard disk drives |
| url | http://dx.doi.org/10.1155/2015/989854 |
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