Takamitsu Tsuna
TDK
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Publication
Featured researches published by Takamitsu Tsuna.
IEEE Transactions on Magnetics | 1999
Yoshikazu Soeno; Sliinji Ichikawa; Takamitsu Tsuna; Yoshikazu Sato; Isamu Sato
A new piezoelectric piggy-back microactuator for high density hard disk drives was designed and fabricated to achieve more accurate positioning of the magnetic head and increasing servo bandwidth. The microactuator is made of stiff piezoelectric ceramic material to actuate the slider on which the head-element is formed. It is designed to amplify the actuating displacement. The basic mechanical performance of the microactuator was evaluated. The stroke of displacement was /spl plusmn/0.5 /spl mu/m with a drive voltage of /spl plusmn/lO V and a dc bias of +10 V. The resonant frequency of the microactuator was high at 34 kHz. The fundamental resonant frequency of an assembled head with microactuator was high at around 20 kHz. The head variation was suppressed to O.1 /spl mu/m by the microactuator with feedback control. These results suggest the feasibility of increasing servo bandwidth up to several kHz and positioning the head more precisely.
Archive | 1997
Yoshikazu Soeno; Shinji Ichikawa; Takamitsu Tsuna; Isamu Sato
Archive | 2005
Shinji Ichikawa; Yoshikazu Soeno; Takamitsu Tsuna
Archive | 1997
Yoshikazu Soeno; Shinji Ichikawa; Takamitsu Tsuna; Isamu Sato
Archive | 2000
Shinji Ichikawa; Yoshikazu Soeno; Takamitsu Tsuna
Archive | 1991
Kazumasa Fukuda; Monjiro Momoi; Takamitsu Tsuna; Mikio Matsuzaki
Archive | 1998
Shinji Ichikawa; Toshitake Sato; Keiichi Soeno; Takamitsu Tsuna; 勇武 佐藤; 慎司 市川; 佳一 添野; 隆満 綱
Archive | 2002
Mikio Matsuzaki; Kazumasa Fukuda; Takamitsu Tsuna
Archive | 1999
Shinji Ichikawa; Yoshikazu Soeno; Takamitsu Tsuna
Archive | 2011
Takamitsu Tsuna; Atsushi Goto