1111 熱式浮上量調整スライダの動的制御に関する検討(要旨講演,一般セッション:情報機器コンピュータメカニクス)

概要

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To achieve ultra-low flying height, magnetic spacing variations due to manufacturing tolerances and temperature-induced thermal protrusion need to be reduced. We have developed a thermal flying-height control (TFC) slider that carries a micro-thermal actuator. Previous TFCs were mainly statically controlled by a constant power supply. Our purpose is to demonstrate dynamic control of a TFC slider to compensate for high-speed magnetic signal modulation using feed-forward control methods, hi this report, to dynamically compensate for magnetic signal modulation using TFC, two methods were examined. Method 1 adjusted TFC power using only time domain information. Method 2 adjusted TFC power using frequency domain information in addition to time domain information. Method 2 showed better compensation for magnetic signal modulation due to better compensation at higher frequencies. These results showed that a dynamically controlled TFC is feasible in compensating for kHz order modulation.
一般社団法人日本機械学会の論文
2008-03-17