Structural accessibility and structural observability of nonlinear networked systems

Based on the algebraic framework proposed in [19], the problem of causal and non-causal observability of the states and unknown inputs for nonlinear time-delay systems has been

The novelty we introduce in this paper, required for treating large- dimensional systems, is to identify from the symbolic Jacobian matrix the minimal set of variables (together

In view of all this, one of the aims of this paper is to review some concepts and procedures concerning observability in the context of nonlinear dynamics. It will be useful to see

The current well-established approach is based on the so- called rigidity matrix, and its algebraic properties (e.g., its rank and nullspace). This method is typically motivated

The method is based on a synthesis of trap invariants from the interaction formula of the system and relies on two logical oper- ations (positivation and dualization) that

L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des

Figure 6b shows the extent to which the magnitude of the angular momentum of the system differs from its initial value when the system is controlled by the control forces that

The established condition for the unknown input observability turns out to be a generalization of the already known condition for systems with un- known inputs, but without delays