微型硬盘驱动器工作状态下的冲击特性仿真

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振动与冲击 ›› 2011, Vol. 30 ›› Issue (12) : 88-92.

论文

微型硬盘驱动器工作状态下的冲击特性仿真

魏浩东1;敖宏瑞1;姜洪源1;皮亚东2

作者信息 +

Simulation of dynamic characteristics of an operational hard disk drive with small form factor subject to external shock

WEI Hao-dong1, AO Hong-rui1,JIANG Hong-yuan1,PI Ya-dong2

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摘要

为了研究微型硬盘驱动器在受到外界冲击激励时的动态特性，对磁头/盘界面的磁头悬臂与支承件接触面系统建立了力学模型，对施加不同冲击持续时间和加速度幅值的半正弦冲击的系统响应进行了仿真，探讨了在不同激励下磁头浮动块的冲击响应及影响空气轴承力变化的主要因素。仿真结果表明，在冲击过程中，气膜的挤压效应对空气轴承力具有一定的影响，冲击加速度幅值和持续时间的变化将影响浮动块的运动稳定性。研究结果为硬盘结构的抗冲击设计提供了理论参考和分析方法。

Abstract

in order to study the dynamic characteristics of hard disk drive subject to external shock, a dynamic model was established to describe the system of head/disk interface with slider suspension and the lift-tab/ramp interface. The dynamic performance of the system subject to external shock with half-sinusoidal shape for different durations and amplitudes were simulated. The dynamic response of the head slider under the shock and factors affecting the air bearing force were discussed. The simulation results indicate that during the shock, the squeezing effect of the thin film at head/disk interface influences the air bearing force, and the variation of the shock duration and amplitude determines the stability of the slider. The simulation results provide beneficial theoretical reference and analytical method for the design of the hard disk drive with good anti-shock performance.

导出引用

魏浩东;敖宏瑞;姜洪源;皮亚东. 微型硬盘驱动器工作状态下的冲击特性仿真[J]. 振动与冲击, 2011, 30(12): 88-92

WEI Hao-dong;AO Hong-rui;JIANG Hong-yuan;PI Ya-dong. Simulation of dynamic characteristics of an operational hard disk drive with small form factor subject to external shock [J]. Journal of Vibration and Shock, 2011, 30(12): 88-92