Tilt Error Measurement and Compensation Method for the Holographic Data Storage System Using Disturbance Observer

Sang Hoon Kim; Jang Hyun Kim; Yonghee Lee; Hyunseok Yang; Joo Youn Park; Kyoung Su Park; Young Pil Park

doi:10.1109/TMAG.2009.2016238

Tilt Error Measurement and Compensation Method for the Holographic Data Storage System Using Disturbance Observer

Sang Hoon Kim, Jang Hyun Kim, Yonghee Lee, Hyunseok Yang, Joo Youn Park, Kyoung Su Park, Young Pil Park

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Tilt error can affect a serious effect to holographic data storage system using angle(polytopic) multiplexing. Because the tolerance about tilt error is very tight it is important to measure the tilt error and compensate it. In this paper, tilt error measurement system with additional red laser and reflection geometry is suggested and servo control experiments are conducted. A servo controller to compensate tilt error is designed using disturbance observer. Amount of tilt is decreased smaller than 0.01 degree and signal-to-noise ratio is increased with the tilt servo controller when 0.216 degree of tilt disturbance is applied.

Original language	English
Article number	4815995
Pages (from-to)	2248-2251
Number of pages	4
Journal	IEEE Transactions on Magnetics
Volume	45
Issue number	5
DOIs	https://doi.org/10.1109/TMAG.2009.2016238
Publication status	Published - 2009 May

Bibliographical note

Funding Information:
This research was supported by the MOCIE (Ministry of Commerce, Industry and Energy) of Korea through the program for the Next Generation Ultra-High Density Storage (00008145).

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/TMAG.2009.2016238

Cite this

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abstract = "Tilt error can affect a serious effect to holographic data storage system using angle(polytopic) multiplexing. Because the tolerance about tilt error is very tight it is important to measure the tilt error and compensate it. In this paper, tilt error measurement system with additional red laser and reflection geometry is suggested and servo control experiments are conducted. A servo controller to compensate tilt error is designed using disturbance observer. Amount of tilt is decreased smaller than 0.01 degree and signal-to-noise ratio is increased with the tilt servo controller when 0.216 degree of tilt disturbance is applied.",

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AU - Park, Kyoung Su

AU - Park, Young Pil

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AB - Tilt error can affect a serious effect to holographic data storage system using angle(polytopic) multiplexing. Because the tolerance about tilt error is very tight it is important to measure the tilt error and compensate it. In this paper, tilt error measurement system with additional red laser and reflection geometry is suggested and servo control experiments are conducted. A servo controller to compensate tilt error is designed using disturbance observer. Amount of tilt is decreased smaller than 0.01 degree and signal-to-noise ratio is increased with the tilt servo controller when 0.216 degree of tilt disturbance is applied.

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Tilt Error Measurement and Compensation Method for the Holographic Data Storage System Using Disturbance Observer

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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