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H∞-differential Riccati equations: convergenceproperties and finite escape phenomena

机译:H∞微分Riccati方程:收敛性和有限逃逸现象

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摘要

The paper studies the transient and asymptotic behavior of the solution of the sign-indefinite differential Riccati equation (DRE) arising in finite-horizon H∞-filtering and control problems. Differently from the sign-definite H∞-DRE, the solution of the H∞-DRE can have finite escape times even for nonnegative initial conditions. Sufficient and necessary conditions for boundedness and convergence are derived in correspondence to a fixed value of the H∞-norm attenuation level γ. Finally, a stepwise γ-switching strategy is devised to guarantee boundedness as well as asymptotic performance
机译:本文研究了在有限水平H∞滤波和控制问题中出现的符号不定微分Riccati方程(DRE)解的瞬态和渐近行为。与正负号H∞-DRE不同,即使对于非负初始条件,H∞-DRE的解也可以具有有限的逸出时间。对应于H∞范数衰减水平γ的固定值,得出有界和收敛的充分必要条件。最后,设计了一种逐步γ切换策略,以保证有界和渐近性能

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