旋转支架伺服定位系统的实现

IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society (IEEE Cat. No.03CH37468) Pub Date : 2003-11-02 DOI:10.1109/IECON.2003.1280569

W. Wong, Lu Feng, G. Guo, W. Ye, A. Al-Mamun

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引用次数: 12

摘要

为了实现磁记录系统的超高磁道密度，需要高精度、高效率的伺服机构将磁头定位在所需磁道上。本文提出了一种基于多频伺服编码和改进离散傅立叶变换(DFT)的译码方案，用于检测旋转支架上的位置误差信号，并将其作为阅读器伺服控制的反馈信号。使用个人计算机(PC)执行DFT并以8khz的速度生成PES。一个改进的PZT头筒底座被用作旋转支架上的定位装置。实现了300 Hz的闭环带宽，跟踪精度提高了18%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Implementation of a servo positioning system on spin stand

To achieve an ultra-high track density in magnetic recording systems, high precision and efficient servomechanism is needed to position the head on the desired track. In this paper, a multiple-frequency servo encoding and modified discrete Fourier transform (DFT)-based decoding scheme is used to detect the position error signal (PES) as the feedback signal for reader servo control on a spin stand. A personal computer (PC) is used to perform the DFT and generates the PES at 8 kHz speed. A modified PZT head cartridge base is used as the positioning device on the spin stand. A closed-loop bandwidth of 300 Hz has been achieved, resulting in an 18% improvement of the tracking accuracy.

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IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society (IEEE Cat. No.03CH37468)

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