HEAD POSITION CONTROLLER FOR DISK DRIVING DEVICE USING REPETITIVE LEARNING CONTROL WHICH CAN ADAPTIVELY ADJUST GAIN

摘要

PURPOSE: To provide a head position controller of a disk driving device which simultaneously reduces periodical and non-periodical errors. ;CONSTITUTION: The head position controller has a repetitive learning controller 31 which repetitively executes learning on a decided track and generates position error compensation signals which can compensate periodical and non-periodical errors, a memory 32 storing the error compensation signals from the repetitive learning controller 31 and a 3σ calculator 35 providing the operation condition of the repetitive learning controller. Then, an interpolator 33 generating position error compensation data on the necessary track by using position error compensation data of the previously learnt adjacent tracks when a head follows the track which is not previously learnt is contained.;COPYRIGHT: (C)1994,JPO