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IEEE Transactions on Automatic Control

Issue 2 • Date April 1969

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Displaying Results 1 - 25 of 35
  • [Front cover and table of contents]

    Publication Year: 1969, Page(s): 0
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    Freely Available from IEEE
  • Comments on "Optimization of discrete-time systems with combined modulation"

    Publication Year: 1969, Page(s):214 - 215
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    A method analogous to that developed by Jordan and Polak is used to determine the optimal pulse-amplitude pulse-width open-loop control of continuous systems. Some recent results by Nardizzi and Bekey are checked and an extension to the case of nonequally spaced sampling instants is shown. View full abstract»

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  • Correction to "A note on optimal linear regulators with incomplete state feedback"

    Publication Year: 1969, Page(s): 218
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (149 KB)

    First Page of the Article
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  • [Back cover]

    Publication Year: 1969, Page(s): 0
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    Freely Available from IEEE
  • Adaptive sampling technique

    Publication Year: 1969, Page(s):200 - 201
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    An adaptive sampling technique utilizing the first three terms of a Taylor series expansion about the n th sampling instant for the error signal in an error-sampled feedback control system is presented. The necessary rules for determining the sign convention used in applying the technique are given along with an example illustrating the method. The procedure ba... View full abstract»

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  • Recursive algorithm for the calculation of the adaptive Kalman filter weighting coefficients

    Publication Year: 1969, Page(s):215 - 218
    Cited by:  Papers (52)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB)

    The optimal discrete adaptive Kalman filter, as presented by Magill, necessitates the iterative calculation of a weighting coefficient for each value of the quantized parameter space. This correspondence proposes a new recursive algorithm for the calculation of the weighting coefficients and compares it to the weighting coefficient algorithm of Magill. When there are View full abstract»

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  • Deadbeat response to parabolic inputs with minimum-squared error restrictions on ramp and step responses

    Publication Year: 1969, Page(s):199 - 200
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    A linear error-sampled control system can be designed to track inputs of the form tkwith zero error in finite time. View full abstract»

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  • On stochastic optimal control

    Publication Year: 1969, Page(s): 193
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (200 KB)

    It is shown that, for a class of stochastic systems, i.e., those in which the cost increases as the distance between the stochastic and the deterministic controls increases, the optimal stochastic control is the conditional expectation of the deterministic control, given the measurement history. View full abstract»

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  • Optimum synchronization of some saturated control systems

    Publication Year: 1969, Page(s):198 - 199
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    Optimum control theory results are applied to find a relationship among the linear region limits of the error, of the output velocity, and of the output acceleration of a typical linear system, to provide minimum time synchronization for inputs causing saturation. This relationship is extended to the case of synchronization to a reference moving at a constant velocity. View full abstract»

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  • "Manual and automatic control"

    Publication Year: 1969, Page(s):218 - 219
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

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  • Further results concerning finite-time stability

    Publication Year: 1969, Page(s):211 - 212
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    Weiss and Infante [1], [2] developed sufficient conditions for finite-time stability of a vector differential equation. It is shown here that some of their theorems actually imply the stronger property of uniform finite-time stability. A theorem is presented which gives sufficient conditions for stability but not necessarily uniform stability. It is shown that this theorem can in certain cases yie... View full abstract»

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  • Optimal linear control systems with incomplete state measurements

    Publication Year: 1969, Page(s):135 - 140
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (744 KB)

    Optimal control laws usually require the complete measurement of the plant state. However, in practice one often has available only a small number of measurements. A procedure is developed that leads to a dynamic feedback control law which is a function of any given set of measurements. The resulting closed-loop system is optimal for all initial states of the system in the sense of minimizing a qu... View full abstract»

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  • Similarity transformations involving the schwarz and companion matrices

    Publication Year: 1969, Page(s):205 - 206
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    Krylov's algorithm is used to unify and extend recent work on relating a matrix to its companion form and the companion matrix to the Schwarz form. A general solution to the "inverse problem of stability" is presented and illustrated. View full abstract»

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  • A note on error analysis in differential dynamic programming

    Publication Year: 1969, Page(s):197 - 198
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    In [1]-[4] new algorithms for determining optimal control of non-linear systems are described. This correspondence provides by means of an error analysis alternative justification for the neglect of certain terms in the derivation of those algorithms. View full abstract»

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  • On the optimum colored noise Kalman filter

    Publication Year: 1969, Page(s):194 - 196
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    A set of equations is presented for designing an optimum Kalman filter for a continuous linear dynamic system with colored measurement noise only. Included are the optimum Kalman filter variance, gain, and mechanization equations in a form which can be computerized easily and requires a minimum of engineering effort. View full abstract»

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  • Compensator design for multivariable linear systems

    Publication Year: 1969, Page(s):130 - 134
    Cited by:  Papers (69)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (784 KB)

    The problem of the specification of the order and structure of a linear dynamic compensator in order to obtain arbitrary pole placement in a closed-loop linear system comprised of the compensator in cascade with a linear plant is discussed. A significant application of the theory is to the design of optimal systems in those cases where not all the state variables of the plant can be measured. Thes... View full abstract»

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  • Generation of Liapunov functions for time-varying nonlinear systems

    Publication Year: 1969, Page(s): 211
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB)

    A procedure for the generation of Liapunov functions for time-varying nonlinear systems is described. A composite differential one-form is derived from the basic system equations. A line integral of the one-form, with t held constant, produces the candidate for a Liapunov function. An example is included. View full abstract»

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  • On the stability of linear discrete-time systems

    Publication Year: 1969, Page(s):207 - 208
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    In Anderson a connection of two types of stability: Liapunov stability, reflecting the internal stability of a system, and bounded-input bounded-output stability, reflecting the external stability of a system, has been established for time-varying linear finite-dimensional dynamic systems which may be represented in a special canonical form. This correspondence extends the connection to time-varyi... View full abstract»

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  • Specific optimal estimation

    Publication Year: 1969, Page(s):183 - 186
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (608 KB)

    The goal of the specific optimal estimation problem is to achieve near-optimal (minimum variance) estimation using a structure that is easier to implement than the optimal solution. One chooses a reasonable configuration for the filter in which certain parameters are unspecified and then selects the parameters so that its performance is optimized. The problem is formulated as a two-point boundary-... View full abstract»

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  • Discrete systems with delays in control

    Publication Year: 1969, Page(s):196 - 197
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    The problem of finding an optimal control in linear discrete systems with time delays in both the state variables and control variables is studied. View full abstract»

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  • Asynchronous quenching of the van der Pol oscillator

    Publication Year: 1969, Page(s):212 - 214
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB)

    Results of analog computer experiments are presented which indicate that the phenomenon known traditionally as asynchronous quenching is actually synchronization at large values of the detuning parameter, as had been proposed earlier by Pengilley and Milner. The relationship of these results to earlier analyses of van der Pol and Kobzarev is discussed and certain shortcomings of the Minorsky strob... View full abstract»

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  • Unbiased estimator for identification of constant linear discrete systems

    Publication Year: 1969, Page(s):193 - 194
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    An unbiased estimator for real-time parameter identification and state estimation for constant linear discrete systems is presented. Bias correction is accomplished by taking account of the mean value of second-order terms which are generally neglected. The inclusion of the bias correction results in better performance for a quadratic cost criterion. View full abstract»

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  • Issue in brief

    Publication Year: 1969, Page(s):121 - 122
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB)

    First Page of the Article
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  • Generation of sensitivity functions for linear systems using low-order models

    Publication Year: 1969, Page(s):123 - 130
    Cited by:  Papers (32)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1072 KB)

    New proofs are given for the recently demonstrated total symmetry and complete simultaneity properties for the companion canonic form for single-input linear time-invariant controllable systems. These proofs result in a convenient closed-form expression for the complete simultaneity property. The use of these properties to generate by one n th-order sensitivity... View full abstract»

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  • Invertibility of linear time-invariant dynamical systems

    Publication Year: 1969, Page(s):141 - 149
    Cited by:  Papers (263)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1368 KB)

    The question of inverting linear time-invariant dynamical systems has been of interest to control engineers for many years. An example of the nonstate-variable approach and application of this concept is the very well known work of Bode and Shannon in 1950. With the integration of state-variable descriptions and techniques into systems problems, the question has recently reappeared in a somewhat 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