Design of ABC algorithm-based Unknown-Input Estimator considering stability of initial colony

We propose a design method of a novel unknown-input estimator (UIE) based on artificial bee colony (ABC) algorithm considering the stability of the initial colony. To ensure that every bee in the initial colony results in a stable UIE system, we modify the computation. The modification include the reformulation of the UIE and a limited choice of the subsystem. The numerical example shows that the proposed design method can design the UIE more efficiently than the existing method.