In this paper, disturbances, the source of TMR being barrier to high track density of HDD are analyzed quantitatively using PES only without extra sensor. Disturbances are separated into RRO and NRRO, then, NRRO is separated into input torque disturbance, output disturbance, and noise. The effect of each disturbance to PES is compared. Using separated disturbances, PSD of PES RRO and NRRO are predicted for various gain levels in track following servo, and they are compared with PSD of PES measured in experiment. We propose that it can be used to predict servo performance accurately.
|Title of host publication||2000 Asia-Pacific Magnetic Recording Conference - Digests of APMRC 2000 on Mechanical and Manufacturing Aspects of HDD|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|ISBN (Electronic)||0780362543, 9780780362543|
|Publication status||Published - 2000|
|Event||Asia-Pacific Magnetic Recording Conference, APMRC 2000 - Tokyo, Japan|
Duration: 2000 Nov 6 → 2000 Nov 8
|Name||2000 Asia-Pacific Magnetic Recording Conference - Digests of APMRC 2000 on Mechanical and Manufacturing Aspects of HDD|
|Other||Asia-Pacific Magnetic Recording Conference, APMRC 2000|
|Period||00/11/6 → 00/11/8|
Bibliographical noteFunding Information:
This work was supported by the Korea Science and Engineering Foundation through CISD (NO: 2000G0201) and the authors are grateful for the support.
All Science Journal Classification (ASJC) codes