Fuzzy tracking control for disk file servo

Abstract

The design and implementation of a fuzzy logic controller on a computer disk drive track-following servo system with the Texas Instruments TMS320C30 digital signal processor board is presented. The research is part of the ongoing effort to design a single fuzzy logic controller which will handle both the track following and seeking motions of the disk head servomechanism. The integrated fuzzy logic controller is expected to reduce the switching transients between the following and the seeking motions, which is the bottleneck for current disk head servo controller design. A Zentek 3100 disk drive is modified to accommodate the fuzzy logic control loop. The control rules are constructed by considering the track error and the track-crossing error. The experimental results are presented, which show that the proposed fuzzy logic controller can achieve satisfactory performance.<>