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IEEE Transactions on Automatic Control

Issue 6 • Date 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
  • Greatest common divisor via generalized Sylvester and Bezout matrices

    Publication Year: 1978, Page(s):1043 - 1047
    Cited by:  Papers (65)
    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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  • Author's reply

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

    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 (1)
    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 u... 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
  • 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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  • An algorithm for obtaining the minimal realization of a linear time-invariant system and determining if a system is stabilizable-detectable

    Publication Year: 1978, Page(s):1048 - 1054
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB)

    A definition of centralized fixed modes of a system, which is an adoption of the definition of fixed modes for a decentralized system [1], is made. It is shown that the centralized fixed modes of a system can be easily and efficiently calculated in terms of the eigenvalues of the system, and that the calculation of such fixed modes enables one to determine, in a numerically efficient way, whether ... 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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  • Design optimization of microprocessor-based remote multiplexing systems

    Publication Year: 1978, Page(s):975 - 986
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (808 KB)

    A physical model of a microprocessor-based remote multiplexing system is constructed, based on the physical layout of the plant and the distribution of input/output variables. A cost index is generated based on the above model, which when maximized, yields a maximum solution that defines the cost optimal number, location and load of the remote systems. The optimal solution is determined by simulat... View full abstract»

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  • Design of sensitivity-reducing compensators using observers

    Publication Year: 1978, Page(s):1058 - 1062
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    In this paper the design of compensators for output feedback systems which satisfy a sensitivity, reduction criterion is considered for the case when the dynamic compensator is an observer. Using the conditions for comparison sensitivity design of output feedback systems derived by Naeije and Bosgra [4], it is shown that for arbitrary stable state-observers (full or reduced order) there exist feed... View full abstract»

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  • Guaranteed ultimate boundedness for a class of uncertain linear dynamical systems

    Publication Year: 1978, Page(s):1109 - 1110
    Cited by:  Papers (39)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (200 KB)

    We consider a class of linear dynamical systems with uncertainty in the system matrix, input matrix, input, and state measurement. Based solely on the knowledge of the uncertainty bounds, we give a measured state feedback control that guarantees uniform boundedness and ultimate boundedness in a certain neighborhood of the zero state. 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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  • Shift Walsh matrix and delay-differential equations

    Publication Year: 1978, Page(s):1023 - 1028
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB)

    Shift Walsh matrix is first introduced. The m \times m shift Walsh matrix is formed from the m \times m Walsh matrix by shifting the columns of the Walsh matrix to the right, dropping the last k(m \geq k > O) columns and assigning first k column... View full abstract»

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  • Optimal scheduling of thermal generating units

    Publication Year: 1978, Page(s):1000 - 1005
    Cited by:  Papers (32)  |  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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  • Calculation of Pareto-optimal solutions to multiple-objective problems using threshold-of-acceptability constraints

    Publication Year: 1978, Page(s):1114 - 1115
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    A technique is presented for the calculation of Pareto-optimal solutions to a multiple-objective constrained optimization problem by solving a series of single-objective problems. Threshold-of-acceptability constraints are placed on the objective functions at each stage to both limit the area of search and to mathematically guarantee convergence to a Pareto optimum. View full abstract»

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  • Approximate state recovering of a distributed parameter system

    Publication Year: 1978, Page(s):1067 - 1074
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB)

    In this paper the problem of recovering the initial state of time-invariant distributed parabolic systems on the basis of a localized noisy observation is considered, and a criterion for the optimal selection of the measurement point is proposed which takes care of the statistical assumptions about the components of the initial state and of the class of approximating functions describing the spati... View full abstract»

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  • A scheme for determining stepsizes for unconstrained optimization methods

    Publication Year: 1978, Page(s):987 - 995
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (784 KB)

    We present a new scheme for determining stepsizes for iterative unconstrained minimization methods. This scheme provides a stepsize estimate for the efficient Armijo-type stepsize determination rule and improves its performance. As examples for the new scheme, we also present a new gradient algorithm and a new conjugate gradient algorithm. These two algorithms are readily implementable and eventua... View full abstract»

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  • Elimination of the real positivity condition in the design of parallel MRAS

    Publication Year: 1978, Page(s):1015 - 1020
    Cited by:  Papers (51)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    All the algorithms developed hitherto in order to obtain a global asymptotically stable "parallel" MRAS (model reference adaptive system) require that a certain transfer function should be made strictly positive real. This condition is restrictive in the case of parallel MRAS used as identifiers or as adaptive state observers, because part of the unknown parameters of the plant to be identified ap... 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 (4)
    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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  • On the optimal and suboptimal nonlinear filtering problem for discrete-time systems

    Publication Year: 1978, Page(s):1062 - 1067
    Cited by:  Papers (25)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (664 KB)

    This paper examines optimal and suboptimal algorithms for the state filtering problem in discrete-time nonlinear systems. The optimal equations of sequential filtering are analyzed and conditions are obtained which ensure a multimodal character for the a posteriori densities. This analysis is utilized in the discussion of the performance of suboptimal linearized filters, and suggestions are made f... 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 (664 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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  • On the state-space realizations of matrix fraction descriptions for multivariable systems

    Publication Year: 1978, Page(s):1054 - 1058
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB)

    A new representative of the state is introduced. This makes a connection between the input/output description of the system (in terms of module theory) and the state-space description (in terms of abstract linear algebra) via the transfer function methods of Rosenbrock and the operator-form realization of Fuhrmann. The state and the realization are both expressed explicitly in terms of a minimal m... 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

Full Aims & Scope

Meet Our Editors

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