Browsing Faculty Research Publicatons by Issue Date
Now showing items 120 of 2105

On the Lyapunov design of systems with zeros in the righthalf plane
(1970)The effect of a zero in the righthalf plane on the controller derived through the stability theorem of Lyapunov is considered through a simple illustrative example. It is shown that the controller should have the form of ... 
Multiple constraints in optimal control problems
(1970)The origin of multiple constraints on a control function in both lumped and distributed systems is investigated. Equivalence and comparability notions are discussed. It is pointed out that multiple constraints have a special ... 
Nonlinear reflection and transmission of electromagnetic waves by moving plasmas
(1971)Based on the covariance principle of Maxwell's equations and phaseinvariance principle (derived from the special theory of relativity), expressions for the nonlinear reflection and transmission of electromagnetic waves ... 
Error Bounds and bandwidth in binary systems using nyquist pulses
(1971)Intersymbol interference upper error bounds are calculated for the Gaussianweighted sinc and raisedcosine families by using the Chernoff bound since this technique yields a value smaller than the worst case bound. A ... 
On maximally flat sharp cutoff lowpass filters
(1971)Maximally flat (MF) lowpass filters with multiple pairs of coincident or distinct imaginary axis zeros are investigated and compared with the all pole Butterworth filters. It is shown that for the same ordern, finite zero ... 
An active feedback block and its applications
(1971)The active feedback block considered in this correspondence consists of three identical singlepole amplifiers and a resistive network, and has a positive slope in the gain frequency characteristics over a certain frequency ... 
Derivation of an optimal estimator for distributed parameter systems via maximum principle
(1972)The problem of estimation for a class of distributed parameter systems is approached via maximum principle. As a consequence, the advantages of the "optimal control" point of view for tackling the estimation problem for ... 
Optimal smoothing for continuoustime systems with multiple time delays
(1972)Equations for the smoothed state estimate and for the error covariances of a continuoustime system with multiple time delays, based on observations involving time delays, are derived through a combination of discretization, ... 
Comments on
(1972) 
On minimizing the divergence in discrete filters
(1972)The problem of divergence that often arises when the filter mechanization is based on lower order process dynamics is examined. This situation may be caused, for example, by the impossibility of completely identifying some ... 
Comments on "A correlation between the FukumaMatsubara and circle criteria for the determination of jump resonance"
(1972)A cycloid type of critical curve for slopelimited nonlinearities has been presented in Riemenschneider and Mastascusa. An alternative derivation of these critical curves, already available in the literature, is pointed ... 
Optimal fixed lag smoothing for time delayed system with colored noise
(1972)The aim of this note is to report an algorithm for the fixed lag smoothing problem of a time delayed system whose observations contain colored noise. This is derived by looking at the appropriate components of a filtering ... 
Distortion of electromagnetic pulses undergoing total internal reflection from a moving dielectric halfspace
(1973)Using the covariance of Maxwell's equations and the phase invariance principle of plane waves, distortion of the electromagnetic pulses undergoing total internal reflection from a moving dielectric halfspace has been ... 
Frequencydomain criteria for stability of a class of nonlinear stochastic systems
(1973)The problem of finding frequencydomain conditions that are sufficient to ensure asymptotic stability with probability one (ASWP 1) of a Luretype system with whitenoise input disturbance is considered. It is shown that, ... 
On the stability of a fixed lag smoother
(1973)The aim of this correspondence is to show that the fixed lag smoothing algorithm reported earlier by the authors is asymptotically stable and is computationally better than the other stable smoothers reported recently. 
On the computational aspects of two recent smoothing algorithms
(1973)This note is concerned with a consideration of the computational requirements of fixedlag and fixedpoint smoothing algorithms reported recently by the authors. 
Poles of Maximally flat sharpcutoff lowpass filters
(1973)The poles of a recently discussed [2] maximally flat sharpcutoff lowpass filter are tabulated for various orders of the filter and various values of the parameters. Loci of these poles are also sketched for some ... 
Modes in inhomogeneous slab waveguides
(1974)In this correspondence we have developed the perturbation approach for the calculation of propagation constants for some of the practical slab waveguides and have shown the applicability of the approach to systems of ... 
Propagation of waves in a medium varying transverse to the direction of propagation
(1974)For an inhomogeneous dielectric in which the dielectric constant ε depends onxonly, it has been shown that it is possible to consider modes propagating in thezdirection havingH_{x} = 0orE_{x} = 0such that other field ...