Browsing by Subject "Linear systems"
Now showing items 2136 of 36

Article
Magnetohydrodynamic turbulence at moderate magnetic Reynolds number
(2004)We consider the case of homogeneous turbulence in a conducting fluid that is exposed to a uniform external magnetic field at low to moderate magnetic Reynolds numbers (by moderate we mean here values as high as 20). When ...

Article
A matrix decomposition MFS algorithm for biharmonic problems in annular domains
(2004)The Method of Fundamental Solutions (MFS) is a boundarytype method for the solution of certain elliptic boundary value problems. In this work, we develop an efficient matrix decomposition MFS algorithm for the solution ...

Conference Object
Model reduction of modal representations
(American Society of Mechanical Engineers (ASME), 2006)Dynamic analysis is extensively used to study the behavior of continuous and lumped parameter linear systems. In addition to the physical space, analyses can also be performed in the modal space where useful frequency ...

Conference Object
Nonconcurrent error detection and correction in discretetime LTI dynamic systems
(2001)In this paper we develop faulttolerant constructions for discretetime (DT) linear timeinvariant (LTI) dynamic systems that are build out of appropriately interconnected delay, adder and gain elements. More specifically, ...

Conference Object
On optimal performance for linear timevarying systems
(2004)In this paper we consider the optimal disturbance attenuation problem and robustness for linear timevarying (LTV) systems. This problem corresponds to the standard optimal H ∞ problem for LTI systems. The problem is ...

Conference Object
Optimal state estimators for linear systems with unknown inputs
(2006)We present a method for constructing linear minimumvariance unbiased state estimators for discretetime linear stochastic systems with unknown inputs. Our design provides a characterization of estimators with delay, which ...

Article
Partial state observers for linear systems with unknown inputs
(2008)We consider the problem of constructing partial state observers for discretetime linear systems with unknown inputs. Specifically, for any given system, we develop a design procedure that characterizes the set of all ...

Article
Performance analysis for a changepoint problem
(1999)Nonlinear stochastic differential equations are used to model a version of the changepoint problem. State estimates of the minimum meansquareerrortype are used in likelihoodratio tests to detect the time of change. ...

Conference Object
Performance of GMRES for the MFS
(2009)In this work we present some preliminary numerical results regarding the performance of the Generalized Minimal Residual (GMRES) method when it is applied to the solution of the linear systems arising from the discretization ...

Article
Robust adaptive attenuation of unknown periodic disturbances in uncertain multiinput multioutput systems
(2016)In highperformance highaccuracy systems, the attenuation of vibrational disturbances is essential. In this paper, we design and analyze a robust outputfeedback adaptive control scheme to attenuate noisecorrupted ...

Conference Object
Robust control over uncertain communication channels
(2005)In this paper, the mathematical framework for studying robust control over uncertain communication channels is introduced. The theory is developed by generalizing the classical information theoretic measures of information ...

Article
Robustness of nonlinear control systems with respect to unmodeled dynamics
(1999)In theory, it can be established that nonlinear control laws for linear or nonlinear plants can be used to meet strict performance requirements. The success of these control designs in practical situations will very much ...

Conference Object
The singular function boundary integral method for Laplacian problems with boundary singularities in two and threedimensions
(2010)We present a Singular Function Boundary Integral Method (SFBIM) for solving elliptic problems with a boundary singularity. In this method the solution is approximated by the leading terms of the asymptotic solution expansion, ...

Conference Object
Stability margins in adaptive mixing control via a Lyapunovbased switching criterion
(2012)In all classes of linear adaptive control that involve switching or not there is no guarantee that after the switching stops or the adaptation is switched off the resulting closed loop linear time invariant system is stable ...

Article
Structural controllability and observability of linear systems over finite fields with applications to multiagent systems
(2013)We develop a graphtheoretic characterization of controllability and observability of linear systems over finite fields. Specifically, we show that a linear system will be structurally controllable and observable over a ...

Article
The underdetermined version of the MFS: Taking more sources than collocation points
(2010)In this study we investigate the approximation of the solutions of certain elliptic boundary value problems by the Method of Fundamental Solutions (MFS). In particular, we study the case in which the number of singularities ...