Vibration Servo Control Design for Mechanical Resonant Modes of a Hard-Disk-Drive Actuator(<Special Issue>Advances in Motion and Vibration Control Technology)

概要

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A design method that can suppress the vibration from high-order resonant modes in a head-positioning system of a hard disk drive was developed. This method uses the vector locus of an open-loop transfer function to design both the controller and the structure simultaneously. Application of the method to an actual hard disk drive showed that positioning accuracy under high-order resonant modes can be improved by 55%. In addition, when all resonances are in-phase, the developed method can suppress vibrations caused by all mechanical resonances. It is concluded that the method can design a control system with high robustness and high following-control performance.
一般社団法人日本機械学会の論文
2003-09-15