Unlock instant, AI-driven research and patent intelligence for your innovation.

Disc driving servo system and method for eccentricity compensation

A servo system, eccentricity technology, applied in the directions of recording/reproducing, driving/moving the recording head, head configuration/installation, etc. by optical methods, which can solve the problems of increasing the influence of eccentricity and hindering the guiding operation.

Inactive Publication Date: 2003-03-05
SAMSUNG ELECTRONICS CO LTD
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of a high eccentricity disc, as the playback speed of the disc drive servo system increases, the influence of the eccentricity increases, thereby hindering a balanced leading operation during tracking control

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Disc driving servo system and method for eccentricity compensation
  • Disc driving servo system and method for eccentricity compensation
  • Disc driving servo system and method for eccentricity compensation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0030] Figure 5 is a block diagram of a disc drive servo system for eccentricity compensation according to an embodiment of the present invention. The disk drive servo system includes a turntable actuator 500 , an error detector 510 , a feedback controller 520 , a learning controller 530 and a gain / phase adjuster 540 .

[0031] The turntable actuator 500 determines the position of an optical head, such as a pickup head (PUH) for recording data on or reproducing data from an optical recording medium.

[0032] The error detector 510 detects the difference between the nominal reference position and the actual position of the PUH (position error).

[0033] The feedback controller 520 receives the position error value from the error detector 510, and generates an actuator driving control value for changing the actual position of the PUH to compensat...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A disk drive servo system for eccentricity compensation and a method thereof includes an error detector detecting a position error between an actual position and a predetermined nominal reference position of a turntable actuator, a feedback unit generating and outputting a first control value to compensate for the position error received from the error detector, a learning controller calculating, storing, and outputting a second control value to compensate for eccentricity at one or more predetermined speeds of the disk drive, and a gain / phase adjustor providing gain and phase compensation information corresponding to the second control value of the learning controller according to frequency response characteristics of the turntable actuator at the one or more predetermined speeds. Accordingly, the eccentricity of the turntable actuator can be effectively compensated, thereby improving a lead-in performance, a tracking performance, and a high-speed seeking performance of the disk drive servo system with respect to the disk eccentricity.

Description

technical field [0001] The present invention relates to eccentricity compensation for disc drives, and in particular to a disc drive servo system for eccentricity compensation and a method for disc drive eccentricity compensation, the disc drive servo system forming And using the table including the compensating control value corresponding to the rotation speed of the disc drive, the compensating control value is obtained by repeating the control learning and the frequency response characteristic of the turntable actuator of the disc drive. Background technique [0002] figure 1 Shows an example of a tracking error signal caused by eccentricity in the disc drive servo system. Eccentricity occurs in disc drive servos when the spindle's rotational axis rotates causing the disc to deviate from the center of the disc's track. This eccentricity has become a major periodic disturbance component, and as the rotational speed of the disk drive increases, the e...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G11B21/10G11B7/085G11B7/09G11B7/095
CPCG11B7/0953G11B7/08541G11B7/0945G11B21/10
Inventor 赵诚一徐仲彦郑守烈
Owner SAMSUNG ELECTRONICS CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com