A Compact Solution of Distributed Multi-Step Delayed Input and State Estimation

This paper presents a compact solution of the recently proposed (time) distributed multi-step delayed input and state estimation (DMSDISE) using a novel decoupled unknown input estimator (UIE) design. It is shown that via this decoupling technique, the conventional UIE can be more efficiently implemented using several smaller unknown subinput estimators, which can be realized independently. Furthermore, the implementation issue of designing the online estimable UIE using a filtered state estimator is also addressed. A numerical example is given to show the effectiveness of the proposed method.