A suspension integrated with a piezoelectric microactuator for dual stage actuation

This paper presents a shear-mode piezoelectric microactuator that can be easily integrated with a suspension for dual stage actuation used in hard disk drives. The finite element method was employed to investigate the static and dynamic performance of the assembly using a simple cantilever suspension integrated with the microactuator. Experiments were also conducted to verify the numerical analysis results. A modern suspension integrated with the microactuator was then simulated based on the optimised structure of the actuator/suspension assembly, and the results showed that 1.17-μm tip stroke could be obtained while the driving voltage was only 20 V.

[1]  S. K. Lowe.  Special applications of power reactors in HV power systems , 1990 .

[2]  Toshiki Hirano,et al.  Electrostatic microactuator and design considerations for HDD applications , 1999 .

[3]  Long-Sheng Fan,et al.  Magnetic recording-head positioning at very high track densities using a microactuator-based, two-stage servo system , 1995, IEEE Trans. Ind. Electron..

[4]  Y. Yamaguchi,et al.  A dual-stage magnetic disk drive actuator using a piezoelectric device for a high track density , 1991 .

[5]  Y. Komura,et al.  High-speed orthogonal power effect actuator for recording at over 10000 TPI , 1996 .

[6]  Shigeo Nakamura.  Application of micromachine technologies to hard disk drives , 1998 .

[7]  William C. Messner,et al.  Design and analysis of a high bandwidth disk drive servo system using an instrumented suspension , 1999 .

[8]  Hai-Qing Lin,et al.  Design of a high bandwidth moving-coil actuator with force couple actuation for HDDs] , 1999 .

[9]  Long-Sheng Fan.  Design and fabrication of microactuators for high density data storage , 1996 .

[10]  Teck-Seng Low,et al.  Micro electrostatic actuators in dual-stage disk drives with high track density , 1996 .

[11]  Michele Pozzi,et al.  Piezoactuators for 'real world' applications. Can they deliver sufficient displacement? , 2000 .

[12]  Yoshifumi Mizoshita,et al.  A high-performance and low-profile moving-magnet actuator for disk drives , 1994 .

[13]  A. H. Jeans.  Analysis of the Dynamics of a Type 4 Suspension , 1992 .

[14]  D. K. Miu,et al.  Tracking Dynamics of In-line Suspensions in High-Performance Rigid Disk Drives with Rotary Actuators , 1992 .

[15]  Yukihiro Uematsu,et al.  A flexural piggyback milli-actuator for over 5 Gbit/in./sup 2/ density magnetic recording , 1996 .

[16]  Yu-Chong Tai,et al.  Silicon micromachined electromagnetic microactuators for rigid disk drives , 1995 .

[17]  V. Speriosu,et al.  Spin-valve RAM cell , 1995 .

[18]  Tomoyoshi Yamada,et al.  Microactuator control for disk drive , 1996 .

[19]  F. Sale,et al.  Analysis of power loss on Mn-Zn ferrites prepared by different processing routes , 1996 .

[20]  W. Messner,et al.  Piezoelectric microactuator for dual stage control , 1999 .

[21]  Shigeyoshi Saito,et al.  Control of Termal Off-Tack Compensation System of a Magnetic Disk Drive with Fine Head Positioning Mechanism. , 1993 .

[22]  Yoshifumi Mizoshita,et al.  An optimization method for precision positioning of pico-CAPS , 1997 .