高阶无差跟踪微分器的串联系统

Transactions of Beijing Institute of Technology(2011)

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Abstract
针对传统跟踪微分器只能实现输入信号的一阶无差跟踪问题,以α阶线性跟踪微分器为基础,通过系统的串联表示,提出具有α阶无差度的三阶线性跟踪微分器.具有α阶无差度的三阶跟踪微分器的最小实现维数为2α,通过此最小实现可以直接得到输入信号的估计值及各阶微分信号.仿真实验表明,该微分器能无差跟踪高阶输入信号,提高系统的跟踪精度.
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Key words
Differential signal,High-order indiscrimination degree,Linear tracking differentiator
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