NDLI: Linear actuator for precise track following

Content Provider	Springer Nature Link
Author	Mori, Shigeki Hoshi, Takayuki Tada, Hirohiko Obinata, Goro Ouchi, Kazuhiro
Copyright Year	2005
Abstract	A new air bearing linear actuator with a Voice Coil Motor (VCM) was investigated for a precise head track following in an Hard Disk Drive (HDD) magnetic recording tester system. The actuator has a servo bandwidth of two times as wide as that of a conventional HDD, due to a high stiffness without any friction. A low-pass filter was introduced to precisely monitor the step response behavior by reducing the relatively large noise of the used optical fiber sensor. The effect of the low-pass filter was investigated comparing with the other method. Track following accuracy was also tested by using a conventional 2.5-inch hard disk drive. The head installed on the actuator could follow on a track by using Position Error Signal (PES) from the servo pattern. When a Double Metal In Gap (D-MIG) head of 4 μm track-width was loaded on a disk rotating at 4200rpm, the tracking error could be compressed down to one-twentieth of the track-width. The tested system did not show any azimuth error of head-tracking due to the linear motion. In conclusion, the air-bearing linear actuator is suitable for a precise track following mechanism of a spin-stand tester for an HDD system.
Starting Page	718
Ending Page	727
Page Count	10
File Format	PDF
ISSN	09467076
Journal	Microsystem Technologies
Volume Number	11
Issue Number	8-10
e-ISSN	14321858
Language	English
Publisher	Springer-Verlag
Publisher Date	2005-05-31
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering Hardware and Architecture

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