OPTIMAL ROBUSTNESS OF PORT-HAMILTONIAN SYSTEMS

OPTIMAL ROBUSTNESS OF PORT-HAMILTONIAN SYSTEMS
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DOI:
10.1137/19m1259092
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发表时间:
2020-01-01
影响因子:
1.5
通讯作者:
Van Dooren, Paul M.
Van Dooren, Paul M.
中科院分区:
数学2区
文献类型:
--
作者:
Mehrmann, Volker;Van Dooren, Paul M.

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我们构造一个给定的有理传递函数,代表一个无源系统的最佳鲁棒端口哈密顿实现。我们表明,实现与最大的被动半径是一个规范化的端口哈密顿。它的计算是链接到一个特定的解决方案的线性矩阵不等式,定义被动的传递函数,我们提供了一个算法来构建这个最佳的解决方案。我们还考虑了找到一个给定的非被动系统最近的被动系统的问题,并提供了一个简单的,但次优的解决方案。
We construct optimally robust port-Hamiltonian realizations of a given rational transfer function that represents a passive system. We show that the realization with a maximal passivity radius is a normalized port-Hamiltonian one. Its computation is linked to a particular solution of a linear matrix inequality that defines passivity of the transfer function, and we provide an algorithm to construct this optimal solution. We also consider the problem of finding the nearest passive system to a given nonpassive one and provide a simple but suboptimal solution.