Browsing Electrical Engineering by Issue Date
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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 ... 
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 ... 
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 ... 
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 ... 
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 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, ... 
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
(1972) 
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 ... 
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, ... 
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 ... 
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. 
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. 
A note on continued fraction inversion by Routh's algorithm
(1974)This correspondence presents an algorithm for finding continued fraction inversion by Routh's algorithm. A recursive relation is given to implement the algorithm in a very simple way. This approach requires less computation ... 
Finite lag receivers for analog communication
(1975)The problem of designing optimum receivers with a finite builtin delay, for a class of stochastic signals, is considered. The approach used here is based on the socalled fixedlag smoothing techniques. Specific cases of ... 
Leastsquares state estimation in timedelay systems with colored observation noise: An innovations approach
(1975)the method of innovations approach has been applied to develop an algorithm for the leastsquares state estimation of a nonstationary linear discrete system with multiple timedelays, based on observations involving ... 
On optimal stationary control of systems with state dependent noise
(1975)This note proposes a simplified existence criterion for the linear quadratic optimal control law for systems with state dependent noise.