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New Robust Stability Criterion for Linear and Nonlinear Multivariable Feedback Systems

机译:线性与非线性多变量反馈系统的鲁棒稳定性判据

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摘要

Eigenvalue inclusion regions are replaced by regions which are tight and lead to sufficient and necessary stability conditions for perturbed linear multivariable systems. The approach provides an exact assessment of gain margins. When applied to nonlinear system, the inclusion regions produce a necessary and sufficient test for the circle criterion conditions to hold in the multivariable case. The resulting stability criterion is an improvement on extensions of the circle criterion.

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