MC-02 FEM analysis and control of micro actuator with piezoelectric element for spinstand

Naganawa, Akihiro; Mori, Shigeki; Tada, Hiroyuki; Shibuya, Yotsugi; Obinata, Goro; Ouchi, Kazuhiro

doi:10.1299/jsmemipe.2003.8

Cited by 4 publications

(4 citation statements)

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“…According to the literatures [2][3][4][5][6][7][8], the main limitations to precise servo positioning are due to the limited bandwidth of the servo positioning system. One viable solution to overcome these limitations is to add a microactuator and a control scheme to control the motion of the R/W heads.…”

Section: Introductionmentioning

confidence: 99%

“…This microactuator, designed for submicron motions, can increase the bandwidth of the servo positioning system. Previously, a lot of researchers have proposed various types of secondary stage microactuators for a hard disk drive servo positioning system [6][7][8][9][10]. All those works show significant improvements in the disk drive servo positioning systems by introducing microactuators.…”

Section: Introductionmentioning

confidence: 99%

“…As the areal density of the magnetic recording medium is expected to reach 1 Tbit per square inch (10 12 bits/in 2 ) in the next few years [1], this places continuously severe requirements to the servo positioning accuracy of the R/W heads. According to the literatures [2][3][4][5][6][7][8], the main limitations to precise servo positioning are due to the limited bandwidth of the servo positioning system. One viable solution to overcome these limitations is to add a microactuator and a control scheme to control the motion of the R/W heads.…”

Section: Introductionmentioning

confidence: 99%

“…In the previous work [7,12], although the servo bandwidth is increased after the microactuation mechanism is added, the structural dynamic performance is degraded because of the structure change and the fact that the piezoelectric microactuator drives a lump of mass. The degraded structural dynamic performance limits the further improvement of the servo performance of the microactuation mechanism.…”

Section: Introductionmentioning

confidence: 99%

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Microactuation mechanism with piezoelectric element for magnetic recording head positioning for spin stand

Guo

Lü³

et al. 2006

Proceedings of the Institution of Mechanical Engineers, Part C:

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A microactuation mechanism with piezoelectric element for positioning the magnetic head element is presented for high-density magnetic recording. The microactuation mechanism can be used in both magnetic disk drive and spin stand testing setup. A head-carrying cartridge used for carrying magnetic read/write head in the spin stand level is designed with the feature to mount piezoelectric microactuator(s) for microactuation. The static and dynamic behaviours of the head-carrying cartridge are evaluated by finite-element modelling. A modified design is proposed with much improved dynamic performance. The designs are prototyped and tested. Experimental dynamic testing and control implementation reveal that the proposed designs can be used for microactuation under high track density magnetic recording spin stand platform.

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