Referenced Items are not available for this document.
We describe a high-performance servo control system for enhancement of spinstand servo performance. This PC-based system uses a multifunction I/O card for controller output and a high-speed digitizer card capable of sampling the frequency-encoded servo pattern at 500 MS/s. The PC, running under the Linux operating system, uses the Goertzel algorithm decoding scheme to calculate the position error signal (PES) at a 15-kHz update rate for feedback control. The control signal drives a custom-made lead zirconate titanate (PZT) actuator, which moves the suspension and thus the read/write head. A proportional and integral (PI) type servo controller supports a 1.1-kHz servo bandwidth, producing a 21.9% improvement of the positioning accuracy of the spinstand.
Published in:
Magnetics, IEEE Transactions on
(Volume:41
,
Issue:
11
)
Date of Publication: Nov. 2005
- Page(s):
- 4315 - 4322
- ISSN :
- 0018-9464
- INSPEC Accession Number:
- 8664537
- Digital Object Identifier :
- 10.1109/TMAG.2005.856304
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 14 November 2005
- Issue Date :
- Nov. 2005
- Sponsored by :
- IEEE Magnetics Society
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