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arXiv 2109.11273eess.SYcs.SYmath.OC
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负虚系统状态反馈等价的充要条件

Necessary and Sufficient Conditions for State Feedback Equivalence to Negative Imaginary Systems

Kanghong Shi, Ian R. Petersen, Igor G. Vladimirov

摘要:

本文给出了线性时不变系统与负虚系统状态反馈等价的充要条件。更精确地说,我们证明了一个最小的LTI严格正常系统可以呈现NI使用全状态反馈当且仅当它可以输出转换成一个系统,它具有相对度小于或等于2,是弱最小相位。我们还考虑了输出严格负虚系统和强严格负虚系统的状态反馈等价性问题。然后,我们应用NI状态反馈等价的结果,鲁棒镇定一个不确定系统严格负虚不确定性。最后给出了一个例子来说明所提出的结果,以稳定一个不确定系统。

英文摘要:

In this paper, we present necessary and sufficient conditions under which a linear time-invariant (LTI) system is state feedback equivalent to a negative imaginary (NI) system. More precisely, we show that a minimal LTI strictly proper system can be rendered NI using full state feedback if and only if it can be output transformed into a system, which has relative degree less than or equal to two and is weakly minimum phase. We also considered the problems of state feedback equivalence to output strictly negative imaginary systems and strongly strict negative imaginary systems. Then we apply the NI state feedback equivalence result to robustly stabilize an uncertain system with strictly negative imaginary uncertainty. An example is provided to illustrate the proposed results, for the purpose of stabilizing an uncertain system.

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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