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http://dx.doi.org/10.5050/KSNVE.2015.25.5.361

Design of a Robust Fine Seek Controller Using a Genetic Algorithm  

Lee, Moonnoh (Dept. of Computer Engineering, Dong-Eui University)
Jin, Kyoung Bog (School of Mechatronics Engineering, KOREATECH)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.25, no.5, 2015 , pp. 361-368 More about this Journal
Abstract
This paper deals with a robust fine seek controller design problem with multiple constraints using a genetic algorithm. A robust $H\infty$ constraint is introduced to attenuate effectively velocity disturbance caused by the eccentric rotation of the disk. A weighting function is optimally selected based on the estimation of velocity disturbance and the estimated minimum velocity loop gain. A robust velocity loop constraint is considered to minimize the variances of the velocity loop gain and bandwidth against the uncertainties of fine actuator. Finally, a robust fine seek controller is obtained by solving a genetic algorithm with an LMI condition and an appropriate objective function. The proposed controller design method is applied to the fine seek control system of a DVD recording device and is evaluated through the experimental results.
Keywords
Fine Seek Control System; Velocity Disturbance; Disturbance Estimation; Robust $H\infty$ Constraint; Robust Velocity Loop Constraint; Genetic Algorithm;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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