抑制分离式读写头下硬盘自伺服刻写过程的径向误差  

Restraining the Radial Error of the Self-Servowriting Process in Hard Disk with Sparating Magnetic Head

作　　者：赵小刚[1,2] 王海卫[1,2] 谢长生[1,2] 李博[1,2] 

机构地区：[1]华中科技大学计算机学院,湖北武汉430074 [2]武汉光电国家实验室光电信息存储研究部,湖北武汉430074

出　　处：《电子学报》2008年第11期2239-2242,2246,共5页Acta Electronica Sinica

基　　金：国家自然科学基金(No.60673002);国家自然科学基金(No.60373091)

摘　　要：本文分析了自伺服过程中产生轨道形状偏差的原因及其带来的径向误差传递现象.详细讨论了分离式磁头对自伺服刻写的影响,指出磁头弯曲度的变化将对径向误差的传播产生一定作用.提出了一种加权型校正信号的产生方法,并从理论上和仿真条件下证明了该方法在参考值变化的情况下对径向误差抑制的作用.The paper analyzes the reason of track shape error and the phenomenon of radial error propagation.Next the paper discusses in detail the effect of separating magnetic head to self-servowriting process. It shows the change of skew angel of the head will affect the radial error propagation procedure. In the end a new weighted correction signal method is proposed in the paper. The method has good containment effect which is proved in theory and in simulation test when reference signal changes.

关 键 词：自伺服刻写 径向误差 误差传播 分离式磁头 磁头弯曲度 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]