线性周期差分延迟方程的指数稳定性
Exponential stability of linear periodic difference-delay equations
AI总结:
本文提出了一种线性周期差分延迟系统指数稳定性的判定条件,扩展了常系数系统的结果,并通过解析性条件解释了其数学意义。
摘要:
本文研究了线性周期差分延迟系统的稳定性,其中解在时间t处的值是其在有限多个延迟时刻t-τ₁,…,t-τ_N处的值的线性组合,具有周期系数。我们建立了当系数具有Hölder连续导数时,此类系统指数稳定性的必要且充分条件,该条件扩展了Henry和Hale在1970年代为常系数差分延迟系统所获得的条件。该条件可被理解为一个相关线性控制系统关联的(算子值)谐波传递函数在半平面中的解析性。
英文摘要:
This paper deals with the stability of linear periodic difference delay systems, where the value at time $t$ of a solution is a linear combination with periodic coefficients of its values at finitely many delayed instants $t-τ_1,\ldots,t-τ_N$. We establish a necessary and sufficient condition for exponential stability of such systems when the coefficients have Hölder-continuous derivative, that generalizes the one obtained for difference delay systems with constant coefficients by Henry and Hale in the 1970s. This condition may be construed as analyticity, in a half plane, of the (operator valued) harmonic transfer function of an associated linear control system.
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