高密度硬磁盘用压电复合磁头悬浮臂  

Piezoelectric Composite Suspension for High Density Rigid Disk Drives

作　　者：王三红[1] 王志宏[1] 姚熹[1] 

机构地区：[1]西安交通大学电子材料与元器件研究所,西安710049

出　　处：《压电与声光》2000年第6期373-375,共3页Piezoelectrics & Acoustooptics

基　　金：高等学校博士学科点专项科研基金资助项目!(96 0 6 980 9)

摘　　要：针对硬磁盘驱动器中磁头定位两级伺服控制系统 ,利用宽度弯曲振动模式 ,设计并制备了分割电极型压电复合磁头悬浮臂。研究了复合磁头悬浮臂的动态位移特性、动态频响特性 ,以及它对读出信号脉冲幅值的影响。结果表明 :2 0 V正弦电压激励下可获得的动态位移幅值约为 1μm ;其固有谐振频率达 6 .3 k Hz,满足高密度硬磁盘对两级伺服控制系统的基本要求。A split electrode piezoelectric composite suspension,based on the width bending mode,was designed for the dual stage servo system of rigid disk drive.The dynamic displacement driving voltage characteristics and frequency responses were studied.The influence of the composite suspension on the read writing properties was also investigated in this paper.Typically,it can generate 1 μm displacement under 20 V AC driving voltage.Its primary resonance frequency is around 6.3 kHz.All the results show that the composite suspension can be used in the dual stage servo system of high density rigid disk drives.

关 键 词：硬磁盘 分割电极 压电陶瓷 致动器 磁头悬浮臂 

分 类 号：TP333.35[自动化与计算机技术—计算机系统结构]