Stability Robustness of LQ Optimal Regulators Based on Multirate Sampling of Plant Output
作者： K. G. Arvanitis , G. Kalogeropoulos
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摘要: The stability robustness of stable feedback loops, designed on the basis multirate-output controllers (MROCs), is analyzed in this paper. For MROC-based order to achieve LQ optimal regulation, we characterize additive and multiplicative norm-bounded perturbations loop transfer function matrix which do not destabilize closed-loop system. New sufficient conditions for robustness, terms elementary MROC matrices, are presented. Moreover, guaranteed margins regulators suggested first time. These obtained a fundamental spectral factorization equality, called modified return difference expressed directly cost system matrices. Sufficient guarantee established. Finally, connection between selection weighting matrices investigated useful guidelines choosing proper
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