We consider the problem of inferring the structure and dynamics of an unknown network driven by unknown noise inputs. For linear, time-invariant systems of minimal order, with hidden states and one noise source per measured state, we characterise under what conditions this problem is wellposed and present two main results. First, for networks with stable interactions between measured states and...

The notion of input-to-state stability (ISS) is now recognized as a central concept in nonlinear systems analysis. It provides a nonlinear generalization of finite gains with respect to supremum norms and also of finite 2 gains. It plays a central role in recursive design, coprime factorizations, controllers for nonminimum phase systems, and many other areas. In this paper, a newer notion, that...

Interaction phenomenon in multi-input multi-output (MIMO) systems is an essential difficulty of controllers planning. To design the appropriate controller in multivariable systems, the interaction in the system must be measured. The theories for planning decouplers are valid only for minimum-phase systems. Nevertheless, the most of physical systems are non-minimum phase. In this paper a new ide...

in this paper, a new topology is proposed for three-phase to single-phase matrix converters, where more voltage levels are produced in the output in comparison with the conventional topologies. in addition, a new control method based on minimum error between the generated and the desired output voltages is proposed for three-phase to single-phase matrix converters. in the proposed control metho...

guidance and control of aircraft in the landing phase imposes extra pilot work loads, hence application of automatic landing control systems is of great importance. in this study automatic landing control systems are introduced and an optimal landing control system is designed. the control system performance criteria are based on minimum control effort. the designed system is simulated for a tr...

We study the stationary state of a simple exclusion process on a ring which was recently introduced by Arndt et al [14,15]. This model exhibits spatial condensation of particles. It has been argued [14, 15] that the model has a phase transition from a “mixed phase” to a “disordered phase”. However, in this paper exact calculations are presented which, we believe, show that in the framework of a...

We give a necessary and sufficient condition for a function E(t) being of minimum phase, and hence for its phase being univocally determined by its intensity |E(t)|. This condition is based on the knowledge of E(t) alone and not of its analytic continuation in the complex plane, thus greatly simplifying its practical applicability. We apply these results to find the class of all band-limited si...

The cosmological QCD phase transition is studied in terms of the color confinement at finite temperature using the dual Higgs theory of QCD. The confinement force is largely reduced at high temperature, which leads to the swelling of hadrons. We derive analytical formulae for the surface tension and the boundary thickness of the mixed phase from the effective potential at Tc. We predict a large...

The well-known prediction-error-based maximum likelihood (PEML) method can only handle minimum phase ARMA models. This likelihood (BFML) method, which can handle nonminimum phase and noncausal ARMA models. The BFML method is identical to the PEML method in the case of a minimum phase ARMA model, and it turns out that the BFML method incorporates a noncausal ARMA filter with poles outside the un...