A Study of High-Gain Servo Controller with Complex Zeros for Optical Disk Drives

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概要

• 論文の詳細を見る

• As optical disk drives are increasingly used in various applications, their servo systems must be made more robust. Various control technologies have been studied, \cite{rf1,rf2} but they require larger circuits and longer computational times. In this paper, a high-gain servo controller with complex zeros, which is the same order controller as the conventional controller, is proposed. The complex zeros allow higher gain without the loss of phase margin. We implemented the high-gain servo controller in a digital servo system. The discrete model of the digital servo system had 3 sampling time delays, and it caused an enhancement of disturbances at high frequencies. We suppressed the enhancement, using the pole assignment method directly in the discrete model. The experimental data had small rotational errors and good performance for torque disturbance.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2005-05-15

著者

• Watanabe Tetsu

  Home Electronics Development Group Home Electronics Network Company Sony Corporation

• Urakawa Yoshiyuki

  Home Electronics Development Group, Home Electronics Network Company, Sony Corporation, 6-7-35 Kitashinagawa, Shinagawa-ku, Tokyo 141-0001, Japan

関連論文

• Application of Turbo Codes to High-Density Optical Disc Storage Using 17PP Code
• Application of Low Density Parity Check Codes to High-Density Optical Disc Storage Using 17PP Code
• A Study of High-Gain Servo Controller with Complex Zeros for Optical Disk Drives

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