硬盘驱动器抗冲击主动控制研究

发布时间：2018-05-26 02:44

本文选题：硬盘驱动器 + 抗冲击　；参考：《西安电子科技大学》2013年硕士论文

【摘要】：硬盘驱动器(Hard Disk Drive)是计算机系统最重要的程序和数据载体。然而，在计算机系统工作时，，来自外部的振动和冲击却都有可能造成硬盘的失效或者损坏。随着磁记录密度的不断增大，头盘间隙已减小到亚微米级，如何避免头盘碰撞，增强抗冲击振动性能已经成为高性能硬盘设计中亟待解决的关键问题之一。为了改善和提高硬盘驱动器抗冲击振动能力，本文对硬盘驱动器的结构动力特性进行了分析，建立了硬盘驱动器的有限元模型，对硬盘驱动器头盘系统进行了模态分析，对硬盘驱动器磁头/盘片界面受到外界冲击载荷后的响应特性进行了仿真研究。在此基础上建立了硬盘驱动器取数臂的动力学模型，分析了头盘间隙在冲击载荷作用下的响应特性；最后，基于主动控制策略设计了一种PID控制器，仿真结果表明：该控制器可保证在300G的冲击下，避免头盘碰撞，大大提高了硬盘的抗冲击振动能力。
[Abstract]:Hard Disk driver is the most important program and data carrier of computer system. However, when the computer system works, the vibration and shock from the outside can cause the hard disk failure or damage. With the increasing of magnetic recording density, the gap of head disk has been reduced to submicron level. How to avoid head-disk collision and enhance anti-shock vibration performance has become one of the key problems to be solved in the design of high-performance hard disk. In order to improve and improve the ability of hard disk drive to resist shock vibration, the structural dynamic characteristics of hard disk drive are analyzed in this paper, the finite element model of hard disk drive is established, and the modal analysis of head disk system of hard disk drive is carried out. The response characteristics of the magnetic head / disk interface of the hard disk drive subjected to external shock loading are simulated. On the basis of this, the dynamic model of several arms of hard disk drive is established, and the response characteristics of head disk clearance under impact load are analyzed. Finally, a kind of PID controller is designed based on active control strategy. The simulation results show that the controller can avoid the collision of the head disk under the impact of 300G and greatly improve the ability of the hard disk to resist the shock vibration.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP333.35;TP273

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