Browsing Faculty Research Publications by Issue Date
Now showing items 1-20 of 2106
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On the Lyapunov design of systems with zeros in the right-half plane
(1970)The effect of a zero in the right-half 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 phase-invariance 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 Gaussian-weighted sinc and raised-cosine families by using the Chernoff bound since this technique yields a value smaller than the worst case bound. A ... -
An active feedback block and its applications
(1971)The active feedback block considered in this correspondence consists of three identical single-pole amplifiers and a resistive network, and has a positive slope in the gain frequency characteristics over a certain frequency ... -
On maximally flat sharp cutoff low-pass filters
(1971)Maximally flat (MF) low-pass 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 ... -
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 Fukuma-Matsubara and circle criteria for the determination of jump resonance"
(1972)A cycloid type of critical curve for slope-limited non-linearities has been presented in Riemenschneider and Mastascusa. An alternative derivation of these critical curves, already available in the literature, is pointed ... -
Optimal smoothing for continuous-time systems with multiple time delays
(1972)Equations for the smoothed state estimate and for the error covariances of a continuous-time system with multiple time delays, based on observations involving time delays, are derived through a combination of discretization, ... -
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 ... -
Comments on
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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 ... -
Distortion of electromagnetic pulses undergoing total internal reflection from a moving dielectric half-space
(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 half-space has been ... -
Frequency-domain criteria for stability of a class of nonlinear stochastic systems
(1973)The problem of finding frequency-domain conditions that are sufficient to ensure asymptotic stability with probability one (ASWP 1) of a Lure-type system with white-noise input disturbance is considered. It is shown that, ... -
Poles of Maximally flat sharp-cutoff low-pass filters
(1973)The poles of a recently discussed [2] maximally flat sharp-cutoff low-pass filter are tabulated for various orders of the filter and various values of the parameters. Loci of these poles are also sketched for some ... -
On the computational aspects of two recent smoothing algorithms
(1973)This note is concerned with a consideration of the computational requirements of fixed-lag and fixed-point smoothing algorithms reported recently by the authors. -
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. -
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 ... -
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 ...