发表机构
ECE Department, UC, San Diego(加州大学圣地亚哥分校电气与计算机工程系)
机构由 AI 辅助整理,请以论文原文为准。AI 中文总结
本文提出基于有限时域Lyapunov函数的固定时间输入状态稳定性描述,建立互连离散时间系统的小增益定理,并在分布式算法、优化和反馈优化中验证。
AI 中文摘要
我们利用有限时域Lyapunov函数研究受外部输入影响的离散时间系统的固定时间输入状态稳定性(FxT-ISS)。在所提出的基于Lyapunov的描述中,初始条件的影响在一致有界的迭代次数后被消除。该描述涵盖了现有的基于消逝的Lyapunov条件,同时允许更一般的有限记忆机制。在此框架基础上,我们为互连离散时间系统建立了有限时域小增益定理,提供了在反馈互连下保持FxT-ISS的条件。所提出的框架通过分布式算法、优化和反馈优化中的示例加以说明。
英文摘要
We study fixed-time input-to-state stability (FxT-ISS) for discrete-time systems subject to exogenous inputs using finite-horizon Lyapunov functions. In the proposed Lyapunov- based characterization, the effect of the initial condition is eliminated after a uniformly bounded number of iterations. This characterization encompasses existing extinction-based Lyapunov conditions while allowing more general finite-memory mechanisms. Building on this framework, we establish a finite-horizon small-gain theorem for interconnected discrete-time systems, providing conditions under which FxT-ISS is preserved under feedback interconnections. The proposed framework is illustrated through examples arising in distributed algorithms, optimization, and feedback optimization.