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首页> 外文期刊>IEEE Transactions on Automatic Control >Linear compensator designs based exclusively on input-output information are never robust with respect to unmodeled dynamics
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Linear compensator designs based exclusively on input-output information are never robust with respect to unmodeled dynamics

机译:完全基于输入-输出信息的线性补偿器设计对于未建模的动力学永远都不会健壮

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摘要

The effects of unmodeled, higher-order dynamics or parasitics on the stability of linear control systems are investigated. A description is first given of a class of perturbations of a given state equation that cannot be distinguished from the original on the basis of input-output measurements alone. Then it is shown that given any plant-compensator pair, perturbations of each system of this type can always be found that destabilize the closed-loop configuration. The effect of destabilizing perturbations on output behavior is explored.
机译:研究了未建模的高阶动力学或寄生效应对线性控制系统稳定性的影响。首先给出对给定状态方程的一类扰动的描述,这些扰动不能仅基于输入输出测量就与原始扰动区分开。然后表明,在给定任何工厂补偿器对的情况下,总能发现这种类型的每个系统的扰动都会破坏闭环组态。探索了不稳定扰动对输出行为的影响。

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