Premium
Robust feedforward control system considering sudden disturbance for optical disk recording system
Author(s) -
Ohishi Kiyoshi,
Miyazaki Toshimasa,
Inomata Koichi,
Koide Daiichi,
Tokumaru Haruki
Publication year - 2006
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.20257
Subject(s) - feed forward , control theory (sociology) , tracking error , servomechanism , tracking (education) , computer science , residual , controller (irrigation) , servo , tracking system , control system , servo control , control engineering , engineering , kalman filter , artificial intelligence , control (management) , algorithm , psychology , pedagogy , agronomy , electrical engineering , biology
This paper proposes a new robust feedforward tracking servo system for optical disk recording systems in the case of a sudden disturbance for the optical disk recording system. In optical recording systems, the tracking servo system must suppress tracking error below its tolerance. This paper designs the robust feedback control system by using the coprime factorization and disturbance observer. The proposed robust feedback control system suppresses the sudden disturbance caused by walking and running. The detecting signal of optical disk recording systems is only a tracking error. Hence, the feedforward controller of the proposed tracking control system is constructed based on both Zero Phase Error Tracking (ZPET) control theory and prediction of tracking error. The experimental results point out that the proposed tracking servo system has a quick and precise tracking response and keeps the residual tracking error below its tolerance. © 2006 Wiley Periodicals, Inc. Electr Eng Jpn, 156(4): 60– 68, 2006; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.20257