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Add-on type loop shaping controller design for high precision track following in hard disc drives (hdds) [Brief Paper]

机译:用于硬盘驱动器(hdds)中高精度磁道跟踪的附加型环路整形控制器设计[简介]

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摘要

In this study, the authors present a systematic design method of the add-on type loop shaping scheme for high precision track following with plant modelling perturbations in HDDs. The proposed controller minimises the standard deviation of the position error signal (PES) of certain closed-loop transfer function while satisfying the robust stability condition in HDDs. Compared with the conventional H?? control, the proposed method yields estimated plant states, which can be used for estimator-based controller design. Also, the proposed control method can be implemented in a parallel manner by performing a partial-fraction expansion for easy implementation. The effectiveness and practicality of our work is demonstrated through various experimental results.
机译:在这项研究中,作者提出了一种用于HDD的高精确度跟踪的附加类型环路整形方案的系统设计方法,以及HDD中的植物建模扰动。所提出的控制器使某些闭环传递函数的位置误差信号(PES)的标准偏差最小,同时满足HDD中的鲁棒稳定性条件。与常规H ??相比控制,提出的方法产生估计的工厂状态,可用于基于估计器的控制器设计。另外,通过执行部分分数扩展可以以并行方式实现所提出的控制方法,以易于实现。通过各种实验结果证明了我们工作的有效性和实用性。

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