Title :
Influence of pole trimming on track-following accuracy
Author :
Yasuna, K. ; Usui, K. ; Yamaguchi, T. ; Akagi, K. ; Ohtu, T. ; Shihida, K.
Author_Institution :
Mech. Eng. Res. Lab., Hitachi Ltd., Ibaraki, Japan
fDate :
9/1/1999 12:00:00 AM
Abstract :
The correlation between the pole shape of a magnetic write head and the track-following accuracy has been investigated. To evaluate the effect of head properties on head positioning, an analytical model for position signal generation was developed. This model clarified the effect of the erase-band width and the read track-width on the track-following accuracy by revealing the position signal linearity. The investigation demonstrated that pole trimming of the write head improves head-positioning performance
Keywords :
disc drives; magnetic heads; magnetic recording; analytical model; erase-band width; head positioning; head properties; magnetic disk drives; magnetic write head pole shape; pole trimming effects; position signal generation; position signal linearity; read track-width; track-following accuracy; Analytical models; Disk drives; Information retrieval; Laboratories; Magnetic heads; Mechanical engineering; Memory; Servomechanisms; Shape measurement; Signal generators;
Journal_Title :
Magnetics, IEEE Transactions on
