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Showing papers in "IFAC Proceedings Volumes in 1972"


Journal ArticleDOI
TL;DR: It is shown that the optimal measurement policy and the associated “matched” Kalman-type filter can be precomputed, i.e., specified before the measurements actually occur.

128 citations


Journal ArticleDOI
TL;DR: In this article, the authors present the results obtained in stability study of large-scale systems based upon the comparison principle and vector Liapunov functions, with emphasis on recent innovations which utilize explicit information about the system structure.

69 citations


Journal ArticleDOI
TL;DR: In this article, an algorithm is given to estimate the noise covariance matrices for a linear, discrete, time-varying stochastic system, and it is found that the lagged products of the innovations sequence is also linear in these parameters.

62 citations


Journal ArticleDOI
TL;DR: In this paper, a computer-aided procedure whereby a succession of singleloop designs, using Nyquist loci, yield a multivariable design which is stable and strongly attenuates disturbances is described.

32 citations


Journal ArticleDOI
TL;DR: In this article, the problem of finding all nonnegative definite solutions to the Riccati algebraic equation PA + A'P - PBB'P + C'C = 0 is solved in general.

23 citations


Journal ArticleDOI

20 citations


Journal ArticleDOI
TL;DR: In this article, an algorithm is presented for the recursive determination of certain lumped linear models that when driven by a white-noise sequence yield outputs whose covariances match increasing sections of a given covariance sequence.

16 citations



Journal ArticleDOI
TL;DR: In this article, a load-frequency control problem for interconnected operation of power systems is considered from the viewpoint of the optimal control theory, and a new design procedure is developed as an extension of optimal linear regulator theory, which comprises all principal features of the solutions based on combination of conventional and optimal control design.

14 citations


Journal ArticleDOI
TL;DR: This paper discusses algorithms that combine the steps of identification and control and states that if the algorithm converges it will in fact converge to a minimum variance regulator.

14 citations


Journal ArticleDOI
D. Schröder1
TL;DR: In this paper, the authors have developed a new method for the mathematical treatment of large-signal behavior, in order to demonstrate dynamic characteristics, which up to now were unknown.

Journal ArticleDOI
TL;DR: In this article, a stabilizing feedback control for Haldane-Monod model of microbial growth is designed for stabilizing the growth of a set of microorganisms, which is optimal in the sense that it approaches the maximum production steady state from any initial state.

Journal ArticleDOI
TL;DR: A computer aided design system developed at the Division of Automatic Control, Technical University of Norway is described and an example illustrates the use of the system.

Journal ArticleDOI
Azmi Kaya1
TL;DR: The research provides a method for control access to the freeway by switching of signal lights on entrance ramps to optimally space the entering stream of vehicles using present sensor, signal and computer technology.


Journal ArticleDOI
TL;DR: In this article, the authors demonstrate how a hierarchical structure can also lead to the effective control of discrete manufacturing systems and how the control tasks organize naturally into a multilayer hierarchical structure.

Journal ArticleDOI
TL;DR: In this article, the authors presented the results of a study of the dynamics of a spinning Skylab space station and investigated the stability of motion of several simplified models with flexible appendages.

Journal ArticleDOI
TL;DR: A unified contirbued fraction theory which can be considered as a generalized feedback theory is established and a multiple cycle model consisting many feedback constant matrices and many feedforward integral matrices is constructed.

Journal ArticleDOI
TL;DR: In this paper, a mathematical model using state space notation is developed, describing how the movement of a school of fish is related to natural and artificial stimuli, and different ways of determination of direction in scalar and vector fields of stimuli are described.




Journal ArticleDOI
TL;DR: In this article, Luenberger's minimal-order observer is considered as an alternate to the Kalman filter for obtaining state estimates in linear discrete-time stochastic systems.

Journal ArticleDOI
TL;DR: In this paper, the authors describe the application of linear stochastic optimal control theory to the design of the control system for the air intake (inlet) of a supersonic air-breathing propulsion system.

Journal ArticleDOI
TL;DR: The recently introduced approach of Inners to some problems of system theory is further extended to stability, relative stability and aperiodicity conditions for both linear time-invariant continuous and discrete systems.

Journal ArticleDOI
TL;DR: In this article, an optimum planning and control of a regional sewage treatment system is investigated to minimize total construction and operation cost, an optimum allocation of plants and their sizes are first decided.

Journal ArticleDOI
TL;DR: This tutorial commentary presents a discussion of modern estimation theory and system identification and interrelates the current work represented by the papers in this session with other contemporary work in this area and indicates some new directions for future research.

Journal ArticleDOI
TL;DR: This procedure is algebraic, and realization is accomplished with feedback control, and a number of compatibility conditions on design specifications can be checked by elementary calculations, and specifications on required compensation filters are determined.

Journal ArticleDOI
TL;DR: In this paper, the problem of a tandem cold rolling mill to achieve correct output gauge, and satisfactory shape, and surface finish is considered, and the scheduling problem is formulated as a constrained two point boundary value problem, solved using conjugate gradient and projection techniques developed for optimal control problems.

Journal ArticleDOI
TL;DR: A few possible directions for developing a practical control theory for distributed systems which takes these difficulties into consideration are presented and some of the ideas are illustrated by simple examples.