Toshiki Hirano, Dai Kobayashi, et al.
Japanese Journal of Applied Physics
A MEMS microactuator provides a low-cost and high-performance solution to realize high track densities of HDD, because of the batch fabrication process and its clean mechanical characteristics. However, the servo system to control such a dual-stage system tends to be more complicated than a conventional HDD system. In this paper, a simple and efficient design method of a dual-stage servo controller for HDD applications is described. The experimental results of the track following control with the dual-stage actuator using a conventional VCM and a MEMS microactuator showed that the fourth-order servo controller can achieve a high bandwidth of more than 2kHz. © 1999 IEEE.
Toshiki Hirano, Dai Kobayashi, et al.
Japanese Journal of Applied Physics
Tetsuo Semba, Katsuhisa Furuta
Mathematical Problems in Engineering
Toshiki Hirano, Matthew White, et al.
IMECE 2001
Toshiki Hirano, Long-Sheng Fan, et al.
IEEE Transactions on Magnetics