Invention Grant
US6148240A Method and apparatus for performing an open-loop current shaping for
seeking acoustics reduction in a disk drive
失效
用于执行开环电流整形以寻求磁盘驱动器中的声学减少的方法和装置
- Patent Title: Method and apparatus for performing an open-loop current shaping for seeking acoustics reduction in a disk drive
- Patent Title (中): 用于执行开环电流整形以寻求磁盘驱动器中的声学减少的方法和装置
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Application No.: US36581Application Date: 1998-03-06
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Publication No.: US6148240APublication Date: 2000-11-14
- Inventor: Jwo-min Wang , Thorsten Schmidt
- Applicant: Jwo-min Wang , Thorsten Schmidt
- Applicant Address: CA Milpitas
- Assignee: Quantum Corporation
- Current Assignee: Quantum Corporation
- Current Assignee Address: CA Milpitas
- Main IPC: G11B5/55
- IPC: G11B5/55 ; G11B21/08 ; G11B33/08 ; G05B19/18 ; G05B11/01 ; G11B5/596 ; H02P1/46
Abstract:
Methods and apparatus for reducing overall seeking acoustics in a head-disk apparatus are disclosed. In accordance with one aspect of the present invention, a method for reducing overall seeking acoustics in a disk drive includes sending at least one current command sample to a power amplifier, prior to sending a full scale current command to the power amplifier. A seek current wave form with a smooth, non-linear rise is generated using the power amplifier such that the current command sample. In one embodiment, the full scale current command is arranged to cause the power amplifier to saturate. In another embodiment, the initial rise is a smooth, substantially bi-exponential initial rise.
Public/Granted literature
- USD368846S Portion of a key blade blank Public/Granted day:1996-04-16
Information query
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