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IEEJ Journal of Industry Applications
Vol. 4 (2015) No. 1 p. 1-10



Special Issue Paper

Recently, high-precision tracking control has been required for optical disks. For this purpose, we have previously proposed a tracking control system that is composed of an equivalent-perfect tracking control (E-PTC). However, the conventional control system is not able to operate the inverse system properly for the state equation. In this paper, we propose a new double E-PTC system. With this new system, the inverse system for the state equation operates properly. In addition, we propose a double E-PTC system with an error-based disturbance observer using a notch filter for non-periodic disturbance suppression. The proposed system achieves more precise control and experimental results demonstrate its effectiveness.

Copyright © 2015 The Institute of Electrical Engineers of Japan

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