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arXiv 2406.13612math.OCcs.SYeess.SY
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通过连续统近似计算大规模反步核方程近似解

On Computation of Approximate Solutions to Large-Scale Backstepping Kernel Equations via Continuum Approximation

Jukka-Pekka Humaloja, Nikolaos Bekiaris-Liberis

AI总结:

本文提出两种连续统反步核计算方法,以复杂度不随状态分量数增长的方式近似大规模双曲PDE系统的核,并通过显式幂级数、截断策略和闭式构造验证效率、精度与镇定效果。

摘要:

我们提供了两种计算连续统反步核的方法,这些核产生于线性双曲型偏微分方程(PDE)连续统(系综)的控制中,并可近似大规模对应PDE系统控制中产生的反步核,且计算复杂度不会随大规模系统状态分量数量的增加而增长。在第一种方法中,我们利用连续统核的(三重)幂级数表示并建立其收敛性质,给出了连续统核PDE解的显式公式。在这种情况下,我们还提供了通过适当截断幂级数(按系综变量的幂次)来降低计算复杂度的手段。在第二种方法中,我们识别出一类系统,对这类系统可以以闭式形式构造连续统核方程的解(从而也可构造相应大规模核方程的近似解)。我们还给出了数值算例,以说明这些方法的计算效率与准确性,并验证基于连续统构造的近似控制核的镇定性质。

英文摘要:

We provide two methods for computation of continuum backstepping kernels that arise in control of continua (ensembles) of linear hyperbolic PDEs and which can approximate backstepping kernels arising in control of a large-scale, PDE system counterpart (with computational complexity that does not grow with the number of state components of the large-scale system). In the first method, we provide explicit formulae for the solution to the continuum kernels PDEs, employing a (triple) power series representation of the continuum kernel and establishing its convergence properties. In this case, we also provide means for reducing computational complexity by properly truncating the power series (in the powers of the ensemble variable). In the second method, we identify a class of systems for which the solution to the continuum (and hence, also an approximate solution to the respective large-scale) kernel equations can be constructed in closed form. We also present numerical examples to illustrate computational efficiency/accuracy of the approaches, as well as to validate the stabilization properties of the approximate control kernels, constructed based on the continuum.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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