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Modeling and Compensation of Pivot Nonlinearity in Hard Disk Drives

机译:硬盘驱动器中枢轴非线性的建模与补偿

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In this paper we propose a new, straightforward approach to derive model of the pivot nonlinearity in the hard disk drive. The proposed nonlinear model is not based on classical pivot nonlinearity models. It is derived using frequency domain measurements obtained for different amplitudes of the actuator excitation current. One of the advantages of the obtained model is that it is derived using actual experimental measurements conducted under the real operating conditions of the hard disk drive. Experimental results show good match of the derived model with both the frequency and time domain measurements. The derived model is subsequently used for feedforward compensation of the pivot nonlinearity and the experimental results are presented. Simulation studies are carried out for adaptive neural network compensation using the derived model.
机译:在本文中,我们提出了一种新的,直接的方法来导出硬盘驱动器中的枢轴非线性模型。所提出的非线性模型不是基于古典枢轴非线性模型。它使用用于致动器激励电流的不同幅度获得的频域测量来导出。所获得的模型的一个优点是它是使用在硬盘驱动器的实际操作条件下进行的实际实验测量来源的。实验结果显示衍生模型与频率和时域测量的良好匹配。随后使用衍生的模型用于枢轴非线性的前馈补偿,并提出了实验结果。使用衍生模型进行仿真研究,进行自适应神经网络补偿。

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