S1604-1-6 スピンスタンド上でDTMを評価するトラッキングアクチュエータ(磁気ヘッド浮上位置決め制御技術)

Abstract

The authors proposed a new actuator called "Nano-Motion Actuator (NMA)" for track following on a spin-stand that evaluated magnetic heads and media for high density recording. At the present time, effect of azimuth angle which causes between a center line of a head slider and a tangential direction of the track is actualized as a track pitch of the head becomes narrow. However, when a discrete track media (DTM) will be put to practical use, a new specification that should be large working distance exceeding 60 μm with a resonance frequency of over 5 kHz should be required. The authors proposed a new actuator which was consisted of a laminar piezoelectric element and a displacement amplitude mechanism. A new concept that was moving directions of the piezoelectric element and the actuator were at right angles to each other was applied to the amplitude mechanism. As a result, the new actuator will be able to evaluate new high density magnetic recording applied DTM on a future spin-stand system.