Vibration suppression and optimal repetitive disturbance rejection control in semi-Nyquist frequency region using multirate sampling control
Vibration suppression and optimal repetitive disturbance rejection control in semi-Nyquist frequency region using multirate sampling control
复制标题
使用多速率采样控制的半奈奎斯特频率区域的振动抑制和最佳重复扰动抑制控制
DOI：
10.1109/cdc.2000.912292
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
Y. Hori
中科院分区：
文献类型：
--
作者：
H. Fujimoto;Y. Hori
提出了针对采样期相对较长的数字控制系统的多条反馈控制器。提出的控制器即使在半nyquist频率区域也可以实现振动抑制和干扰排斥。首先，基于闭环特性，多次抽样控制器将连续的时振动控制器完全离散。其次，通过反馈和馈电方法提出了多条重复控制器。此外，通过快速采样方法优化了样本间的干扰拒绝性能。提出的控制器应用于硬盘驱动器的沉降和以下模式，这些方法的优势通过模拟证明。
Multirate feedback controllers are proposed for digital control systems with relatively long sampling period. The proposed controllers achieve vibration suppression and disturbance rejection even in the semi-Nyquist frequency region. First, the continuous-time vibration suppression controller is exactly discretized by the multirate sampling control based on the closed-loop characteristics. Second, multirate repetitive controllers are proposed both by the feedback and feedforward approaches. Moreover, the inter-sample disturbance rejection performance is optimized by the fast sampling approach. The proposed controllers are applied to the settling and following modes of hard disk drive, and the advantages of these approaches are demonstrated by simulations.