Disturbance Observer for Estimating Higher Order Disturbances in Time Series Expansion
Disturbance Observer for Estimating Higher Order Disturbances in Time Series Expansion
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DOI：
10.1109/tac.2010.2049522
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发表时间：
2010-05
影响因子：
6.8
通讯作者：
Kyung-Soo Kim;K. Rew;Soohyun Kim
中科院分区：
文献类型：
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作者：
Kyung-Soo Kim;K. Rew;Soohyun Kim
本文提出了一种新的广义扰动观测器，它能够估计时间序列展开中的高阶扰动。从常值扰动观测器出发，将其系统地推广到斜坡扰动和一般阶次扰动。扰动观测器的广义形式结合了系统模型和积分，具有新颖的结构。为了实用，噪声测量和频域中的性能进行了讨论。此外，针对一类线性系统，从所提出的全状态扰动观测器出发，推导出了一种基于输出的降阶扰动观测器，并通过实例验证了其潜在的适用性。
In the note, a generalized disturbance observer capable of estimating higher order disturbances in the time series expansion is newly proposed. Initiated from a constant disturbance observer, we extend it systematically to cope with ramp disturbance and general order disturbances. The generalized form for disturbance observer exhibits the novel structure incorporating the system model and integrals. To be practical, the noisy measurement and the performance in the frequency domain are addressed. In addition, for a class of linear systems, an output-based disturbance observer of reduce order is newly derived from the proposed full state disturbance observer, and its potential applicability will be demonstrated by an example.