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The control performance improvement of the optical disk system by correction pulse control
Author(s) -
Yokoyama Eiji
Publication year - 2007
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.20570
Subject(s) - control theory (sociology) , overshoot (microwave communication) , pid controller , control system , impulse (physics) , position (finance) , impulse response , acceleration , computer science , block (permutation group theory) , optical disc , engineering , physics , control (management) , control engineering , optics , mathematics , telecommunications , temperature control , artificial intelligence , electrical engineering , mathematical analysis , geometry , finance , classical mechanics , quantum mechanics , economics
Abstract This paper proposes a control system which improves OPU (Optical Pick Up) control performance in an optical disk system. This system can be realized by adding a correction pulse control block which is based on a position error signal onto a conventional position control loop composed of the PID control rule. Using this function, the position error resulting from a physical distortion and acceleration disturbance to the disk can be decreased sharply. Furthermore, this system can decrease the deviation caused by the shock disturbance which cannot be controlled by the PID control rule. In addition, it becomes possible to decrease the overshoot in the impulse response sharply, and realize stable capture of a target position. Since this system can be created with a simple algorithm, it is possible to use it in a wide range of applications. © 2007 Wiley Periodicals, Inc. Electr Eng Jpn, 160(2): 53–67, 2007; Published online in Wiley InterScience ( www.interscience. wiley.com ). DOI 10.1002/eej.20570