New estimates of upper bounds for the solutions of the continuous algebraic Riccati equation and the redundant control inputs problems

New estimates of upper bounds for the solutions of the continuous algebraic Riccati equation and the redundant control inputs problems
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连续代数 Riccati 方程解和冗余控制输入问题的上限的新估计

DOI:
10.1016/j.automatica.2020.108936
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发表时间:
2020-06
期刊:
影响因子:
6.4
通讯作者:
Bai Ying
Bai Ying
中科院分区:
计算机科学2区
文献类型:
--
作者:
Liu Jianzhou;Wang Li;Bai Ying

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本文根据连续代数Riccati方程(CARE)的给定矩阵的性质,构造了一个新的半正定矩阵。然后基于矩阵特征值和特征值不等式的一些重要性质,利用不等式技巧和公式变换,利用新的半正定矩阵,得到了CARE的一类新的上界.因此,在冗余控制输入系统中,通过导出的界、不等式技巧以及矩阵特征值和奇异值的重要性质,给出了一些新的保证控制器增益随控制输入增加而减小的充分条件,这些条件比以前的结果更具有适应性。最后通过数值例子说明了结果的有效性。
In this paper, according to the properties of the given matrix of the continuous algebraic Riccati equation (CARE), a new positive semi-definite matrix is constructed. And then basing on some significant properties of the matrix eigenvalue and eigenvalue inequality, using inequality techniques and formula transformation and the new positive semi-definite matrix, a class of new upper bounds of the CARE is obtained. Consequently, in redundant control inputs system, by the derived bounds, inequality techniques, and the important property of the matrix eigenvalue and singular value, we present some new sufficient conditions to guarantee the decrease of controller gain when increasing the control input, which are more adaptable than previous results. Finally, we show the effectiveness of the results by numerical examples.
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