Abstract
This paper proposes a design method of low-dimensional linear functional observers on the basis of a model reduction approach. This method can guarantee not only stability preservation but also an a priori estimation error bound for the observer approximation. Moreover, owing to the fact that this method can be applied to any functional observers, the method is compatible with the standard feedback gain determination methods, such as pole placement techniques. The efficiency of the proposed method is shown through a numerical example for electric power network systems.
