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IEEE Transactions on Automatic Control

Issue 6 • December 1978

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Displaying Results 1 - 25 of 43
  • [Front cover and table of contents]

    Publication Year: 1978, Page(s): 0
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    Freely Available from IEEE
  • Editorial: Some thoughts after two years on the information dissemination committee

    Publication Year: 1978, Page(s):973 - 974
    Cited by:  Papers (1)
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    Freely Available from IEEE
  • Shift Walsh matrix and delay-differential equations

    Publication Year: 1978, Page(s):1023 - 1028
    Cited by:  Papers (43)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (420 KB)

    Shift Walsh matrix is first introduced. Them times mshift Walsh matrix is formed from them times mWalsh matrix by shifting the columns of the Walsh matrix to the right, dropping the lastk(m geq k > O)columns and assigning firstkcolumns of the new matrix as zero elements. Delay Walsh functions can be expanded in terms of Walsh functions using shift Wal... View full abstract»

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  • Output deadbeat controllers with stability for discrete-time multivariable linear systems

    Publication Year: 1978, Page(s):1036 - 1043
    Cited by:  Papers (26)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (651 KB)

    This short paper Treats the problem of designing output deadbeat controllers having the property that the control input to the system converges to zero as time goes to infinity, for discrete-time multivariable linear systems. Two configurations of controllers are considered: one is of state feedback; the other is a dynamic controller using an observer. The existence of such controllers is examined... View full abstract»

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  • Greatest common divisor via generalized Sylvester and Bezout matrices

    Publication Year: 1978, Page(s):1043 - 1047
    Cited by:  Papers (121)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (540 KB)

    We present new methods for computing the greatest common right divisor of polynomial matrices. These methods involve the recently studied generalized Sylvester and generalized Bezoutian resultant matrices, which require no polynomial operations. They can provide a row proper greatest common right divisor, test for coprimeness and calculate dual dynamical indices. The generalized resultant matrices... View full abstract»

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  • The existence and uniqueness of Volterra series for nonlinear systems

    Publication Year: 1978, Page(s):1090 - 1095
    Cited by:  Papers (84)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (532 KB)

    Given an input-output map described by a nonlinear control systemdot{x}=f(x,u)and nonlinear outputy=h(x), we present a simple straightforward means for obtaining a series representation of the outputy(t)in terms of the inputu(t). When the control enters linearly,dot{x} =f(x)+ ug(x), the method yields the existence of a Volterra series represen... View full abstract»

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  • Stable proper nth-order inverses

    Publication Year: 1978, Page(s):1104 - 1106
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    A stable proper right (left)nth-order inverse of a given linear time-invariant system of orderncan always be constructed, via a simple algorithm, if a proper right (left) inverse exists and the zeros of the given system are stable. Furthermore, it is shown that all of the poles of this inverse can be arbitrarily assigned except those which equal the zeros of the given system. View full abstract»

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  • Author's reply

    Publication Year: 1978, Page(s): 1116
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    First Page of the Article
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  • Comments on "New estimation algorithms for nonlinear continuous systems with multiple delays"

    Publication Year: 1978, Page(s):1116 - 1117
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (213 KB)

    This technical note points out certain inaccuracies in the results presented in the above correspondence. View full abstract»

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  • Comments on "A note on the Routh-Hurwitz criterion"

    Publication Year: 1978, Page(s): 1116
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (112 KB)

    In a recent note, it was pointed out that the "ε method" in the application of Routh-Hurwitz criterion fails when the characteristic equation has an arbitrarily small coefficient In this correspondence it is shown that the cause of such a failure is the wrong interpretation of the arbitrariness of ε. View full abstract»

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  • Correction to "An invalid norm appearing in control and estimation"

    Publication Year: 1978, Page(s):1117 - 1118
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (210 KB)

    Two counterexamples are presented in the above correspondence [1] to demonstrate that|A|_{3},the minimum of the standard column-sum norm(|A|_{1})and the row-sum norm(|A|_{2}), is not a valid norm. While these observations are correct, there is an error in [1] in the argument used to justify the use of|A|_{3}as a convergence test. This error is corrected ... View full abstract»

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  • [Back cover]

    Publication Year: 1978, Page(s): 0
    Cited by:  Papers (1)
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    Freely Available from IEEE
  • An iterative coordination approach to decentralized decision problems

    Publication Year: 1978, Page(s):1031 - 1036
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (688 KB)

    Splitting methods are examined for the iterative solution of the classical linear least-squares problem in Hilbert space. Conditions for convergence of the class of iterations studied generalize existing conditions in the literature. Throughout, the emphasis is on an organization-theoretic interpretation of the algorithm, thereby clarifying certain questions of decentralization of information and ... View full abstract»

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  • On minimum energy control of commutative bilinear systems

    Publication Year: 1978, Page(s):1020 - 1023
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    A minimum energy control problem is considered for commutative bilinear systems with and without terminal constraints. Optimal controls are shown to be constant vectors determined by the boundary conditions. Sufficient conditions are derived for uniqueness of the optimal control in the absence of a terminal constraint. A class of physical bilinear systems is discussed which possesses the commutati... View full abstract»

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  • Three important matrix inequalities currently impacting control and estimation applications

    Publication Year: 1978, Page(s):1110 - 1111
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (224 KB)

    This correspondence traces the origin of three simple but powerful matrix inequalities that have arisen in many diverse control and estimation studies. The purpose of this slightly critical discussion is to stimulate an awareness of the variety of applications for these inequalities and by so doing, hopefully, to reduce the period for their reappearance in the control and estimation theory literat... View full abstract»

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  • Stabilized suboptimal periodic control of a chemical reactor

    Publication Year: 1978, Page(s):1005 - 1008
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    The suboptimal periodic state of a chemical reactor which is unstable under open-loop control is realized and stabilized by applying a simple closed-loop relay control. The method of return state difference in which the computer simulation technique is effectively utilized is developed and used for the stability analysis of the relay control systenm. View full abstract»

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  • Global asymptotic stability of a nonlinear parabolic equation

    Publication Year: 1978, Page(s): 1114
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (136 KB)

    Necessary and sufficient conditions are derived for the asymptotic stability of a nonlinear parabolic equation. Spatial Fourier transformation converts the stability determination to that for an infinite system of ordinary differential equations, and facilitates approximate to exact solutions, depending on the boundary conditions, the nonlinearities, and the harmonic content of the steady-state di... View full abstract»

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  • Optimal scheduling of thermal generating units

    Publication Year: 1978, Page(s):1000 - 1005
    Cited by:  Papers (56)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (616 KB)

    Scheduling the operation of thermal generating units involves the selection of units to be placed in operation and the allocation of the load among them- These two decisions must be taken so as to minimize the sum of tile startup, banking, and expected riming costs subject to the demand, spinning-reserve, and minimum down-time and up-time constraints and, sometimes, to the following two additional... View full abstract»

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  • Continuous-time observers with delayed sampled data

    Publication Year: 1978, Page(s):1107 - 1109
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB)

    A theory and design procedure for continuous-time full-order observers driven by delayed sampled data is presented. An example is included to illustrate the advantage of this method. View full abstract»

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  • Design-performance-measure statistics for stochastic linear control systems

    Publication Year: 1978, Page(s):1085 - 1090
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (552 KB)

    Formulas for statistics of the standard integral quadratic performance measure used in stochastic linear control system design are derived. The formulas are expressed in terms of dynamical variables under the usual assumptions on noise, plant, and admissibility of control. All of these dynamical variables are expressed as linear transformations of plant state estimates. The practicality of this wo... View full abstract»

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  • A study of frequency prediction for power systems

    Publication Year: 1978, Page(s):996 - 1000
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (560 KB)

    A frequency predictor is identified from simulated measurements of power and frequency on a power system. An on-line Ieast-squares algorithm is used along with a new system structure test for model order identification. A comparison of this system structure test with other model order identification tests is also included. The performance of the resultant predictor is then determined as a function... View full abstract»

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  • On the stabilization of closed-loop stabilizable systems

    Publication Year: 1978, Page(s):1103 - 1104
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB)

    The question of stabilizing unity feedback linear systems through the employment of proper feedforward compensators is important in many aspects of control theory. Although it appears to be well-known that a large class of linear systems, namely those which might be termed "closed-loop stabilizable," can be so stabilized, it is difficult to find a definitive reference which establishes this observ... View full abstract»

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  • A note on commutative bilinear optimal control

    Publication Year: 1978, Page(s): 1111
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (128 KB)

    For optimal control problems with bilinear dynamics and quadratic cost, the assumption of commutativity is extremely strong and reduces the problem to the classical one of least action. View full abstract»

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  • Time-optimal feedback control for small disturbances

    Publication Year: 1978, Page(s):1095 - 1099
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    This paper introduces a new technique for the analysis of time-optimal systems having multidimensional inputs. The method provides a cellular decomposition of the controllable set for small response times for a new generic class of systems called "minimally controllable systems." The decomposition permits a complete study of the time-optimal flow near the origin and forms the basis for the synthes... View full abstract»

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  • Design of variable structure model-following control systems

    Publication Year: 1978, Page(s):1079 - 1085
    Cited by:  Papers (94)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (640 KB)

    A new design concept for adaptive model-following control systems capable of shaping the error transient responses is developed using the theory of variable structure systems and sliding mode. It is shown that the resulting model-following control system exhibits adaptive properties inherent in adaptive model-following systems designed by existing methods. An aircraft control problem which has bee... View full abstract»

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Aims & Scope

In the IEEE Transactions on Automatic Control, the IEEE Control Systems Society publishes high-quality papers on the theory, design, and applications of control engineering.  Two types of contributions are regularly considered

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Meet Our Editors

Editor-in-Chief
P. J. Antsaklis
Dept. Electrical Engineering
University of Notre Dame