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arXiv 1604.08663math.OC
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线性差分方程的相对能控性

Relative controllability of linear difference equations

Guilherme Mazanti

摘要:

本文研究了具有多时滞状态的线性差分方程的相对能控性,利用这类系统的解的一个合适的公式,根据系统的初始条件、控制输入以及由定义系统的矩阵递归得到的矩阵值系数,得到了这类系统的相对能控性.由于这样的公式,我们在时间$T$的矩阵值系数的代数性质,这减少到通常的卡尔曼可控性标准的情况下,一个单一的延迟的相对可控性的特征。研究了函数空间$L^p$和$\mathcal C^k$中所有函数集合中的解的相对能控性。我们还比较了系统的相对可控性不同的延迟在其合理的依赖结构,证明了相对可控性的一些延迟意味着相对可控性的所有延迟是“理性依赖”比原来的,在某种意义上说,我们使精确。最后,我们提供了一个上界的最小可控时间的系统只依赖于它的尺寸和它的最大延迟。

英文摘要:

In this paper, we study the relative controllability of linear difference equations with multiple delays in the state by using a suitable formula for the solutions of such systems in terms of their initial conditions, their control inputs, and some matrix-valued coefficients obtained recursively from the matrices defining the system. Thanks to such formula, we characterize relative controllability in time $T$ in terms of an algebraic property of the matrix-valued coefficients, which reduces to the usual Kalman controllability criterion in the case of a single delay. Relative controllability is studied for solutions in the set of all functions and in the function spaces $L^p$ and $\mathcal C^k$. We also compare the relative controllability of the system for different delays in terms of their rational dependence structure, proving that relative controllability for some delays implies relative controllability for all delays that are "less rationally dependent" than the original ones, in a sense that we make precise. Finally, we provide an upper bound on the minimal controllability time for a system depending only on its dimension and on its largest delay.

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