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Robust Output Regulator with Frequency Adaptation Algorithm for Optical Disc Drives  

Kim, Sang-Hyun (ASRI, Department of Electrical Engineering, Seoul National University)
Kim, Hyung-Jong (ASRI, Department of Electrical Engineering, Seoul National University)
Shim, Hyung-Bo (ASRI, Department of Electrical Engineering, Seoul National University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SC / v.48, no.4, 2011 , pp. 17-24 More about this Journal
Abstract
This paper presents a control scheme to cancel periodic disturbance with unknown frequency for optical disc drives. The control scheme consists of an output regulator and a frequency adaptive algorithm. Here, the frequency adaptive algorithm based on IMP plays a role in obtaining a frequency of periodic disturbance. The stability analysis of whole system and disturbance rejection performance are proven by the singular perturbation theory. The contribution of this paper are as follows. (1) There is no design constraints of the frequency range. (2) Ability for perfect disturbance rejection is preserved even with uncertain plant model.
Keywords
Robust output regulator; Adaptive algorithm; Singular perturbation; Optical disc drives;
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