MODAL TESTING AND FINITE ELEMENT MODELLING OF SUBSYSTEM IN HARD DISK DRIVE
MODAL TESTING AND FINITE ELEMENT MODELLING OF SUBSYSTEM IN HARD DISK DRIVE
复制标题
硬盘驱动器子系统的模态测试和有限元建模
DOI：
10.1006/mssp.2002.1508
复制
发表时间：
2003
影响因子：
8.4
通讯作者：
N. Guo
中科院分区：
文献类型：
--
作者：
L. Xu;N. Guo
残余振动是影响硬盘驱动器磁头致动器组件动态特性、数据访问速度和定位分辨率的主要机械问题之一。本文介绍了实验模态测试和有限元建模，是专门为振动测试头致动器组件。在不改变实际工作条件下结构模态特性的前提下，采用特殊激励方法对基于音圈电机的磁头驱动组件进行了模态测试。建立了磁头致动器组件的有限元模型，并对各种模态进行了分析。研究表明，磁头驱动组件的动力学特性是非常复杂的，特别是由于枢轴的柔性、磁头驱动臂的质量和结构等因素引起的横向准刚体模态振动，因此有必要研究有效的方法来减小横向准刚体模态振动，改善磁头驱动组件的动力学特性。从而可以开发高性能HDD。
Residual vibration is one of the primary mechanical problems that affect the dynamic characteristics of the head actuator assembly in hard disk drives, and the data access speed and positioning resolution. This paper presents the experimental modal testing and finite element modelling that are tailored to vibration testing in the head actuator assembly. The special excitation method has been applied for modal testing of the head actuator assembly, based on voice coil motor without altering the modal property of the structure in actual operating condition. The finite element models of the head actuator assembly have been developed, and various modes have been analysed. It is shown that the dynamic characteristics of the head actuator assembly are very complicated, in particular the vibration due to the lateral quasi-rigid body mode caused by the flexibility of the pivot, and mass and structure of the head actuator arm. It is thus essential to develop effective approaches to reduce the vibration of the lateral quasi-rigid mode and improve the dynamic characteristics of the head actuator assembly, so that high-performance HDD can be developed.