这份报纸讨论 asymptotic 稳定性和 Riesz 基础产生因为颤动的一个一般塑造树的网络串。所有外面的顶点被假定被修理,内部顶点被强加线性抑制反馈。这份报纸证明系统由 C 0-semigroup 理论提出得好、 asymptotically 稳定。与一些另外的条件,系统的光谱被显示位于与想象的轴平行的脱衣,所有概括特徵函数的集合在州的空间被完成。这些导致有系统的概括特徵函数的一个序列的结论,它与括号形成一个 Riesz 基础州的空格。
This paper discusses the asymptotic stability and Riesz basis generation for a general tree-shaped network of vibrating strings. All exterior vertices are assumed to be fixed and interior vertices are imposed linear damping feedbacks. This paper shows that the system is well-posed and asymptotically stable by C0-semigroup theory. With some additional conditions, the spectrum of the system is shown to be located in a strip that is parallel to the imaginary axis and the set of all generalized eigenfunctions is completed in the state space. These lead to the conclusion that there is a sequence of generalized eigenfunctions of the system, which forms a Riesz basis with parenthesis for the state space.