Prescribed-Time Unknown Input Observers Design for Singular Systems: A Periodic Delayed Output Approach
研究了线性奇异系统在输入延迟下的预设时间全阶和降阶未知输入观测器设计，通过周期延迟输出方法使估计误差在预设时间内收敛到零，仿真验证了有效性。
This article studies the design of prescribed-time full- and reduced-order unknown input observers (UIOs) for linear singular systems with input delay, satisfying the acrlong OMC, and the strong observability condition. To this end, a condition in terms of a matrix equation is first used to transform the considered linear singular system into a regular one with unknown input. Then, prescribed-time full- and reduced-order UIOs are established by employing a periodic delayed output approach such that the estimation error converges to zero in prescribed time. Finally, comparative simulations are shown to demonstrate the effectiveness and superiority of the proposed approaches.