Fixed-time parameter estimation in polynomial systems through modulating functions

Fixed-time parameter estimation in polynomial systems through modulating functions
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通过调制函数进行多项式系统中的固定时间参数估计

DOI:
10.1109/cdc.2016.7798568
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发表时间:
2016
期刊:
2016 IEEE 55th Conference on Decision and Control (CDC)
影响因子:
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通讯作者:
J. Moreno
J. Moreno
中科院分区:
--
文献类型:
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作者:
Matti Noack;Juan G. Rueda;J. Reger;J. Moreno

文献摘要

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在这项工作中,一个新的程序识别多项式系统的参数。为了得到系统的回归形式,并避免输入/输出信号的时间导数的必要性,调制函数的方法被应用。与其他可用的有限时间估计技术相比,不需要方阵的实时求逆。相反,使用非线性梯度算法来使估计在固定时间内收敛。该过程允许参数估计的连续和递归更新,并避免了基于反演的估计方案的计算负担。
In this work, a novel procedure for identifying the parameters of a polynomial systems is introduced. In order to get a regression form of the system, and to avoid the necessity of time-derivatives of input/output signals, the modulating function method is applied. In contrast to other available techniques for achieving estimates in finite-time, the real-time inversion of square matrices is not required. Instead, a nonlinear gradient algorithm is used to let the estimate converge in fixed-time. This procedure allows a continuous and recursive update of the parameter estimates and avoids the computational burdens of inversion-based estimation schemes.