Track following control design for ODDs by employing repetitive two-degree-of-freedom control scheme
Track following control design for ODDs by employing repetitive two-degree-of-freedom control scheme
复制标题
采用重复二自由度控制方案的 ODD 轨迹跟踪控制设计
DOI：
10.1109/tce.2003.1261215
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
Jianying Zhou
中科院分区：
文献类型：
--
作者：
Fengdan Dong;Youyi Wang;Jianying Zhou
光盘驱动器（ODD）伺服机构的径向迹迹跟踪受到光盘偏心旋转引起的周期性扰动的严重影响。这种干扰引起周期性的跟踪误差，可以通过采用重复控制器有效地加以抑制。本文针对具有不确定对象参数的ODD跟踪伺服系统，提出了一种重复二自由度控制方案。所提出的重复控制器是在线性区间系统频域分析的基础上设计的，并作为一个插件模块安装在现有的跟踪伺服系统中，该系统的反馈补偿器设计独立于重复控制器。仿真和实验结果表明，该控制方案显著提高了径向伺服机构的跟踪精度。
Radial track following of an optical disk drive (ODD) servomechanism is severely exposed to periodic disturbances induced by eccentric rotation of the disc. Such disturbances cause the tracking errors of a periodic nature and can be effectively rejected by employing a repetitive controller. In this paper, we propose a repetitive 2DOF control scheme for an ODD track-following servo system with uncertain plant parameters. The proposed repetitive controller is designed on the basis of the frequency domain analysis of the linear interval system and installed as a plug-in module in an existing track following servo system whose feedback compensator is designed independently of the repetitive controller. Simulative and experimental results showed that the proposed control scheme enables a significant improvement of the tracking accuracy of the radial servomechanism.