IEEE Transactions on Automatic Control

Issue 6 • December 1980

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Displaying Results 1 - 25 of 54
  • [Front cover and table of contents]

    Publication Year: 1980, Page(s): 0
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  • Editorial: Short papers: A denouement

    Publication Year: 1980, Page(s):1025 - 1026
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  • Announcement: Student paper competition

    Publication Year: 1980, Page(s): 1026
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  • Parameter space design of robust control systems

    Publication Year: 1980, Page(s):1058 - 1072
    Cited by:  Papers (198)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1266 KB)

    Find a state or output feedback with fixed gains such that nice stability (defined by a region in the eigenvalue plane) is robust with respect to large plant parameter variations, sensor failures, and quantization effects in the controller. Keep the required magnitude of control inputs small in this design. A tool for tackling such problems by design in the controller parameter spaceKis... View full abstract»

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  • Control of constrained systems of controllability index two

    Publication Year: 1980, Page(s):1102 - 1111
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (671 KB)

    Many natural and man-made systems satisfy a strong controllability hypothesis which results from a natural partition of the state space into "position" and "velocity" coordinates. In particular, plane linkage systems used as biped locomotion models satisfy these conditions. Systems satisfying this hypothesis admit linear state-variable feedback, which can be used to position not only the poles of ... View full abstract»

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  • Compensator synthesis using (C,A,B)-pairs

    Publication Year: 1980, Page(s):1133 - 1138
    Cited by:  Papers (139)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (671 KB)

    This paper gives a general framework (in the geometric style) for the design of compensators for linear multivariable systems. Basic is the notion of a "(C,A,B)-pair of subspaces." This concept is newly defined here, and we give its simplest application (to the problem of disturbance decoupling by observation feedback). We then formulate a general compensator synthesis principle and sho... View full abstract»

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  • A time-stepping procedure for Ẋ=A1X+XA2+D, X(0)=C

    Publication Year: 1980, Page(s):1138 - 1141
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (446 KB)

    We develop an expression for the exact solution of the matrix differential problemdot{X} = A_{1} X + XA_{2} + D, X(0) = Cbased on variation of parameters and use this to devise the time-stepping relationX(t+h)=e^{A_{1}h}{X(t)+intliminf{0}limsup{h}e^{-A_{1}s}De^{-A_{2}s}ds}e^{A_{2}h}. We modify a procedure of Van Loan to effect efficient computation of all the terms necessary ... View full abstract»

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  • An adaptive d-step ahead predictor based on least squares

    Publication Year: 1980, Page(s):1161 - 1165
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    This paper examines the asymptotic properties of a least squares algorithm for adaptively calculating ad-step ahead prediction of a time series. It is shown that, with probability one, the sample mean-square difference between time recursive prediction and the optimal linear prediction converges to zero. Relatively weak assumptions are required regarding the underlying model of the time... View full abstract»

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  • Asymptotic holdability

    Publication Year: 1980, Page(s):1196 - 1198
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB)

    Given an autonomous linear control system and a linear subspaceS subset R^{n}, we say that an initial state is asymptotically holdable inSif the trajectory can be held arbitrarily nearSon any specified compact initial interval, subject to an L1bound on input energy which depends on the initial state and the interval. It is shown that asymptotic holdabili... View full abstract»

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  • On the dimensions of the supremal (A,B)-invariant and controllability subspaces

    Publication Year: 1980, Page(s):1223 - 1225
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    The dimensions of the supremal output-nulling (A,B)- invariant and controllability subspaces of a system are explicitly determined. The role of the input and output decoupling zeros is also discussed. View full abstract»

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  • Null controllability of a nonlinear system with variable time delay

    Publication Year: 1980, Page(s):1234 - 1236
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (257 KB)

    For the nonlinear control system View full abstract»

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  • Asymptotic pole locations and nonlinear controllers

    Publication Year: 1980, Page(s):1240 - 1241
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (204 KB)

    This note generalizes a recently introduced method which produces nonlinear controllers by assigning suitable state dependence to a scalar parameter in an existing stable controller. The form of state dependence is guided by properties of the original controller. For example, variations inTof the modified receding horizon controller are guided by the fact, proved here, that the poles as... View full abstract»

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  • Further comments on "On the numerical solution of the discrete time algebraic Riccati equation"

    Publication Year: 1980, Page(s):1252 - 1253
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (201 KB)

    First Page of the Article
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  • Comments on "On the selection of the dominant poles of a system to be retained in a low-order model"

    Publication Year: 1980, Page(s): 1253
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (109 KB)

    A limitation of the model order selection criterion as proposed in the above correspondence is pointed out. It is shown that the results obtained from the criterion are not generally unique and acceptable. View full abstract»

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  • Authors' reply

    Publication Year: 1980, Page(s): 1253
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (109 KB)

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  • Stochastic optimal control: The discrete time case [Book reviews]

    Publication Year: 1980, Page(s):1254 - 1255
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  • [Back cover]

    Publication Year: 1980, Page(s): 0
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  • Instability of optimal-aim control

    Publication Year: 1980, Page(s):1250 - 1252
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    It is shown that the so-called optimal-aim control strategy [1] might destabilize a controllable linear time-invariant system. This raises a serious question about the efficacy of this strategy when applied to a more complicated nonlinear power system. View full abstract»

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  • A new configuration for linear filtering problems

    Publication Year: 1980, Page(s):1206 - 1207
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (176 KB)

    A filter configuration which is distinctly different from the conventional Kalman-Bucy type filter is presented. It is shown that the performance of this filter is identical to the conventional Kalman filter. View full abstract»

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  • A new algorithm for model reference adaptive control with variable adaptation gains

    Publication Year: 1980, Page(s):1245 - 1248
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    Most of the model reference adaptive control (MRAC) systems use constant gains for the adaptation algorithms. In this paper a variable gain adaptation algorithm is presented for continuous-time systems. The property of global asymptotic stability of the closed-loop adaptive system is perserved. View full abstract»

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  • Frequency domain conditions for disturbance rejection

    Publication Year: 1980, Page(s):1211 - 1213
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    The solvability conditions for the problems of nulling the disturbance transfer function in a linear time-invariant multivariable system by: 1) linear state feedback and 2) linear state feedback and disturbance feedforward control are known in geometric terms. In this paper it is shown that alternative necessary conditions for solvability are that the order of each row of the open-loop control tra... View full abstract»

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  • Generalization of results on multivariable adaptive control

    Publication Year: 1980, Page(s):1241 - 1245
    Cited by:  Papers (47)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (424 KB)

    This paper shows that previous results on multiinput multi-output discrete-time adaptive control can be extended to a wider class of systems. It is shown that global convergence can be established for an adaptive control algorithm applied to the general class of stably invertible system. View full abstract»

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  • Determination of generic dimensions of controllable subspaces and its application

    Publication Year: 1980, Page(s):1192 - 1196
    Cited by:  Papers (42)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    The controllable subspace and its dimension of a structured linear system vary as a function of the free parameters. However, the dimension is stable in the sense that it takes, for almost any system parameters, some maximal constant which is the generic rank of the controllability matrix. In this paper, this maximal constant is called the generic dimension of the controllable subspace. Two simple... View full abstract»

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  • Identification and model approximation for continuous-time systems on finite parameter sets

    Publication Year: 1980, Page(s):1202 - 1206
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB)

    Almost-sure convergence of the maximum likelihood and the maximum a posteriori probability estimates of unknown parameters of continuous-time stochastic dynamical linear time-invariant systems is investigated. The unknown parameter set is assumed to be finite. The situation where the ture parameter does not belong to the unknown parameter set is considered, as well as the situation where the true ... View full abstract»

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  • Team decision theory for linear continuous-time systems

    Publication Year: 1980, Page(s):1154 - 1161
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (768 KB)

    This paper develops a team decision theory for linear-quadratic (LQ) continuous-time systems. First, a counterpart of the well-known result of Radner on quadratic static teams is obtained for two-member continuous-time LQ static team problems when the statistics of the random variables involved are not necessarily Gaussian. An iterative convergent scheme is developed, which in the limit yields the... 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