HEAD FOLLOW−UP CONTROL METHOD,HEAD FOLLOW−UP CONTROL DEVICE,AND STORAGE DEVICE COMPRISING THE SAME

摘要

A follow−up control system for causing the head of a storage device to follow up a storage medium. This control system comprises a sinusoidal wave signal learning unit (82) learning a sinusoidal signal in accordance with a follow−up error signal inputted to a feedback control system (80) so as to perform a temporal advancing compensation corresponding to the delay of the feedback system (80). Therefore, the temporal advancing compensation is introduced into the sinusoidal wave signal learning model capable of learning at a high speed, so that a high−frequency disturbance for which a phase delay should be considered can be compensated, making a contribution to an improvement in the follow−up precision of the storage device.