In the last years, the dynamic control of switched systems have attracted considerable interest, because these systems arise in many engineering fields. Controllability and observability of such systems, which are fundamental qualitative properties, have been studied by various researchers. In this work we focus on structural controllability/observability, using geometrical techniques as minive...

In this communication, some results on the analysis of the reachability and observability of linear discrete-time fractional order systems are given. Mathematical conditions for checking the controllability and the observability of such systems are developed. Furthermore, the concepts of the controllability realization index, the observability realization index and the structure realization ind...

Planning in nondeterministic domains with temporally extended goals under partial observability is one of the most challenging problems in planning. Simpler subsets of this problem have been already addressed in the literature, but the general combination of extended goals and partial observability is, to the best of our knowledge, still an open problem. In this paper we present a first attempt...

The main contribution of this paper is to present a non-linear observability analysis method of Activated Sludge Models (ASM), which are used in many control applications. The objective is to reduce the unobservable ASM1 model to an observable one that can be used to implement advanced estimation algorithms. Local observability is achieved under certain operating conditions but failed at some p...

This paper presents a new approach for determining sensor locations for nonlinear dynamic systems. The method uses empirical observability gramians for observability analysis and combines the information from this investigation with observability measures which have been previously proposed in the literature. This approach offers the advantage over other methods in that it is directly applicabl...

Our goal is to set up Controllability and Observability Theorem of fuzzy discrete event systems (FDESs), in which the observability and controllability of events may be fuzzy instead. In particular, we present a detailed computing flow to verify whether the controllability and observability conditions hold. Thus, this result can decide the existence of supervisors. As well, this computing metho...

Reconstructing the states of the nodes of a dynamical network is a problem of fundamental importance in the study of neuronal and genetic networks. An underlying related problem is that of observability, i.e., identifying the conditions under which such a reconstruction is possible. In this paper we study observability of complex dynamical networks, where, we consider the effects of network sym...

This work presents another concept of observability in nonlinear systems, when the states of these types of models are described using a representation by interval numbers. This approach is an extension of classical concepts of nonlinear observability, called ε-observability and is based on a notion of the neighborhood of a state with a given precision of epsilon. Our proposal includes the noti...