硬盘驱动器两级磁头伺服系统的精确定位  

Precise positioning of dual-stage hard disk drive servo system

作　　者：张洪波[1] 黄心汉[1] 王敏[1] 彭刚[1] 

机构地区：[1]华中科技大学控制科学与工程系,湖北武汉430074

出　　处：《电机与控制学报》2008年第1期58-64,共7页Electric Machines and Control

摘　　要：为了获得硬盘驱动器系统较快的寻道速度和较高的定位精确度,采用音圈电机作为第一级致动器控制磁头进行粗定位,微致动器作为第二级致动器控制磁头臂实现精定位和磁道跟踪。在建立硬盘驱动器系统模型并将复合非线性反馈控制律应用于此模型的基础上进行仿真实验。结果表明,磁头能实现快速精确的定位,其性能优于采用简单的线性反馈控制律所获得的控制效果。In hard disk drive （HDD） system, in order to acquire faster seeking speed and higher positioning accuracy, voice coil motor was acted as a primary actuator to control the magnetic head to realize coarse positioning, and micro-actuator was acted as a secondary actuator to control the head suspension to realize fine positioning and track following. Simulation experiment was carried out based on model construction of hard disk drive system and application of a composite nonlinear feedback control law. The simulation results show that magnetic head can realize rapid and precise positioning and its performance outperforms that of the simple linear feedback control law.

关 键 词：磁头定位 致动器 复合非线性反馈 陷波滤波器 超前补偿器 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TP333.3[自动化与计算机技术—控制科学与工程]