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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  • Analysis of nonlinear stochastic systems with wide-band inputs

    Publication Year: 1980, Page(s):1072 - 1078
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (696 KB)

    A general method for approximating systems with wide-band inputs by diffusion processes is discussed. The input noise itself can be processed nonlinearly by elements of the system. One particular case is examined in detail, that of a hard limiter just after the input. The results suggest that the limiter can actually improve performance if the noise intensity is small. The development illustrates ... View full abstract»

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  • Sensitivity analysis and optimal control theory applied to corona charging of electrographic films

    Publication Year: 1980, Page(s):1078 - 1085
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (696 KB)

    Multiple-wire ac corona chargers are designed to charge film to a final voltage which is well regulated with respect to parameter variations. These low-sensitivity designs are optimal in the sense that they minimize a performance index which penalizes high dc bias voltages. To obtain low sensitivity to film capacitance, velocity, and charging efficiency, the film must be charged so that its surfac... View full abstract»

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  • Bounds on estimation errors of discrete-time filters under modeling uncertainty

    Publication Year: 1980, Page(s):1115 - 1121
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (568 KB)

    The performance of Kalman-type linear discrete-time filters in the presence of modeling errors is considered, and bounds are obtained for the performance index, the mean-squared error of estimates for suboptimal filters. The computation of these bounds requires information on only the model matrices and the range of errors for these matrices. Consequently, a designer can easily evaluate the perfor... View full abstract»

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  • Estimating workpiece pose using the feature points method

    Publication Year: 1980, Page(s):1027 - 1041
    Cited by:  Papers (14)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1560 KB)

    The ability of a robot to estimate workpiece pose is necessary for many industrial tasks. An automatic method of visually estimating the pose of a workpiece in a robot hand has been investigated. This method is applicable to workpieces that have six continuous unknown degrees of freedom. Furthermore, partial occlusion of the workpiece by the robot hand is allowed. Workpiece pose was estimated usin... View full abstract»

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  • Analysis of stochastic approximation schemes with discontinuous and dependent forcing terms with applications to data communication algorithms

    Publication Year: 1980, Page(s):1042 - 1058
    Cited by:  Papers (56)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1280 KB)

    A general convergence result is given for stochastic approximation schemes with (or without) equality constraints. The following features are taken into account. The forcing term is a strongly dependent sequence and may be discontinuous. Many examples are given to illustrate the applicability of the convergence theorem, both classical (recursive least squares scheme) and nonclassical ones (arising... 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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  • On the control and evaluation of uncertain processes

    Publication Year: 1980, Page(s):1182 - 1187
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (552 KB)

    The tools discussed in this paper provide a numerical way to deal with ill-posed problems in the control and evaluation of uncertain processes. Although the idea of modeling fuzzy systems may appear somewhat elusive, it is shown that it is n perfectly tractable mathematical concept. This paper has grown from our conviction that many scientists today are potential users of uncertain models, and thu... View full abstract»

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  • Failure of a parallel adaptive identifier with adaptive error filtering

    Publication Year: 1980, Page(s):1248 - 1250
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (320 KB)

    The possible stall of a parallel adaptive identifier using adaptive error filtering is heuristically predicted and then verified by simulalion. 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