This paper proposes a new lattice filter structure that has the following properties. When the filter is Linear Time Invariant (LTI), it is equivalent to the celebrated Gray Markel Lattice. When the lattice parameters vary with time it sustains arbitrary rate of time variations without sacrificing a prescribed degree of stability, provided that the lattice coefficients are magnitude bounded in ...

The aim of the given paper is development of a minimum variance control (MVC) approach for a closed-loopdiscrete-time linear time-invariant (LTI) system when the parameters of a dynamic system as well as that of a controller are not known and ought to be estimated by processing observations in the case of additive Gaussian noise on the output with contaminating outliers uniformly spread in it. ...

System identification is concerned with the estimation of parameters characterizing an unknown system. The estimation is usually based on observations of the system’s (possibly noisy) input(s) and output(s). In the so-called “blind” system identification scenario, the estimation is based on the observed output(s) only, aided by some general knowledge about statistical properties of the input(s)...

Abstract – This paper deals with robust stability of linear time-invariant (LTI) systems with unstructured uncertainties. A new relation between uncertainties and system poles perturbed by the uncertainties is derived from a graphical analysis. A stability criterion for LTI systems with uncertainties is proposed based on this result. The migration range of the poles in the proposed criterion is...

Robust stability conditions obtained through generalization of the notion of energy dissipation in physical systems are discussed in this report. Linear time-invariant (LTI) systems which dissipate energy corresponding to quadratic power functions are characterized in the time-domain and the frequency-domain, in terms of linear matrix inequalities (LMIs) and algebraic Riccati equations (AREs). ...

In this paper we introduce a new control strategy for linear time invariant (LTI) systems with a single time delay. The delay appears within the feedback control logic. Earlier research on this class of systems determines the delay intervals for stable operations, exhaustively, exactly and completely. The newly developed inverting control logic suggests a very practical procedure of reversing t...

We consider a fundamental remote state estimation problem of discrete-time linear time-invariant (LTI) systems. A smart sensor forwards its local estimate to estimator over time-correlated multistate Markov fading channel, where the packet drop probability is time-varying and depends on current channel state. establish necessary sufficient condition for mean-square stability error covariance in...

• A class of identifiable frequency response function models is developed for linear parameter-varying systems. closed-form Jacobian the weighted nonlinear least-squares estimator derived. An experimental LPV FRF model a flexible beam system estimated. The estimate shows high simulation performance on validation data sets. For Linear Time-Invariant (LTI) systems, Frequency Response Functions (F...

Cyber-physical systems (CPS) often rely on external communication for supervisory control or sensing. Unfortunately, these communications render the system vulnerable to cyber attacks. Attacks that alter messages, such as replay attacks record measurement signals, and then play them back can cause devastating effects. Dynamic Watermarking methods, which inject a private excitation into inputs s...

We take a unified view of network coding and decentralized control. Precisely speaking, we consider both as linear time-invariant systems by appropriately restricting channels and coding schemes of network coding to be linear time-invariant, and the plant and controllers of decentralized control to be linear timeinvariant as well. First, we apply linear system theory to network coding. This giv...