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arXiv 2103.01608math.OCmath.DSphysics.flu-dyn
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基于低维$\mathcal{H}_{\infty}$ -控制器的不可压缩流鲁棒输出反馈镇定

Robust output-feedback stabilization for incompressible flows using low-dimensional $\mathcal{H}_{\infty}$-controllers

Peter Benner, Jan Heiland, Steffen W. R. Werner

摘要:

基于输出的控制器是已知的模型不确定性是脆弱的。标准的$\mathcal{H}_{\infty}$ -控制理论提供了一种基于$\mathcal{H}_{\infty}$ -Riccati方程解的鲁棒控制器设计的一般方法。鉴于稳定不可压缩流的模拟,两个主要的挑战必须解决:高维性质的空间离散模型和微分代数结构,来与不可压缩性约束。本文研究了不可压缩流问题的低维鲁棒控制器的合成问题,给出了保证鲁棒裕度的低维鲁棒鲁棒控制器。的性能和鲁棒性的降阶控制器的线性化和模型降阶误差进行了研究,并在数值例子中示出。

英文摘要:

Output-based controllers are known to be fragile with respect to model uncertainties. The standard $\mathcal{H}_{\infty}$-control theory provides a general approach to robust controller design based on the solution of the $\mathcal{H}_{\infty}$-Riccati equations. In view of stabilizing incompressible flows in simulations, two major challenges have to be addressed: the high-dimensional nature of the spatially discretized model and the differential-algebraic structure that comes with the incompressibility constraint. This work demonstrates the synthesis of low-dimensional robust controllers with guaranteed robustness margins for the stabilization of incompressible flow problems. The performance and the robustness of the reduced-order controller with respect to linearization and model reduction errors are investigated and illustrated in numerical examples.

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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