Title:
繰り返し制御系及びこれを含むドライブサーボシステム
Document Type and Number:
Japanese Patent JP2006512639
Kind Code:
A
Abstract:
A repetitive controller for suppressing periodic signals with half-wave symmetry includes a memory loop fed with a periodic signal of period NT and in which the memory size includes N/2 memory elements. A negative feedback connection is provided and a factor of -½ is provided at the output of the memory loop. Such a repetitive controller may be used for instance in the disturbance compensation module of a drive servo system in a recording and reproducing apparatus including a head for recording data on a recording medium.
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Inventors:
De Hof, Thomas, Yang
Application Number:
JP2004560102A
Publication Date:
April 13, 2006
Filing Date:
December 12, 2003
Export Citation:
Assignee:
Koninklijke Philips Electronics N.V.
International Classes:
G05B13/02; G05B5/01; G11B5/596; G11B7/095; G11B21/10; G11B5/00; G11B5/012
Attorney, Agent or Firm:
Tadahiko Ito
Shinsuke Onuki
Tadashige Ito
Shinsuke Onuki
Tadashige Ito