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IEEE Transactions on Automatic Control

Issue 3 • June 1976

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Displaying Results 1 - 25 of 48
  • [Front cover and table of contents]

    Publication Year: 1976, Page(s): 0
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    Freely Available from IEEE
  • On continued fraction inversion by Routh's algorithm

    Publication Year: 1976, Page(s): 394
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (93 KB)

    This note points out that the generalized algorithm proposed recently by Chao et al. for Cauer second form can be applied for inverting a continued fraction in the Cauer first form by merely writing the transfer function as a ratio of two polynomials arranged in the descending powers of "S." View full abstract»

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  • FFT calculation of a determinantal polynomial

    Publication Year: 1976, Page(s):401 - 402
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (187 KB)

    An algorithm to find the coefficients of thes-polynomialD(s) = |H(s)|is obtained, whereH(s)is an arbitrarys-polynomial square matrix. The algorithm, based on the fast Fourier transform (FFT), is of an order of magnitude faster than existing methods. View full abstract»

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  • MoreA_{1}E+EA_{2}=-DandẊ=A_{1}X+XA_{2}+D,X(0)=C

    Publication Year: 1976, Page(s):405 - 406
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (198 KB)

    The solution of the real matrix equationA_{1}E + EA_{2} = - Dis given in terms of the eigenvalues and eigenvectors ofA_{1} in R^{{n}_{1} times n_{1}}, A_{2} in R^{n_{2}} times n_{2}}, and the elements ofD. The solution is valid if the Aiare symmetric or if they do not have repeated eigenvalues. The solution can be extended to handle nonsymmetric matrices... View full abstract»

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  • On the decoupling of linear time-varying control systems

    Publication Year: 1976, Page(s):410 - 412
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB)

    Some recent results concerning the input-output decoupling problem of time-invariaut systems, for which the decoupling matrixB*is not invertible, are extended to time-varying systems. It is shown that the maximum number of input-output pairs which can be decoupled by linear state feedback is equal to rankB*(t) = r, whereris assumed to be constant over the entire ti... View full abstract»

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  • Decoupling by restricted state feedback

    Publication Year: 1976, Page(s):413 - 415
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (265 KB)

    A necessary and sufficient condition for integrator decoupling ofp-inputm-output multivariable control systems by the restricted state feedback control law,u = GFx + Gupsilon, is established. View full abstract»

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  • Extension of validity of GRG method in optimal control calculation

    Publication Year: 1976, Page(s):420 - 422
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (289 KB)

    Abadie's hypothesisHplaces severe limitations on the class of problem for which the generalized reduced gradient method may be used to calculate optimal control trajectories in the presence of state and control inequality, constraints. This correspondence indicates that calculation of the reduced state target tube enables the validity of hypothesisHto be extended; an algorith... View full abstract»

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  • [Back cover]

    Publication Year: 1976, Page(s): 0
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    Freely Available from IEEE
  • Modern Wiener-Hopf design of optimal controllers--Part II: The multivariable case

    Publication Year: 1976, Page(s):319 - 338
    Cited by:  Papers (745)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1544 KB)

    In many modern-day control problems encountered in the fluid, petroleum, power, gas and paper industries, cross coupling (interaction) between controlled and manipulated variables can be so severe that any attempt to employ single-loop controllers results in unacceptable performance. In all these situations, any workable control strategy most take into account the true multivariable nature of the ... View full abstract»

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  • Numerical methods for constrained optimization

    Publication Year: 1976, Page(s):435 - 436
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB)

    First Page of the Article
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  • Singular perturbation methods for variational problems in aircraft flight

    Publication Year: 1976, Page(s):345 - 353
    Cited by:  Papers (43)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (768 KB)

    The solution of variational problems by singular perturbation methods is discussed. In addition to the benefits of order reduction, these methods also can serve as practical devices for treating the singularities arising in problems where the control appears linearly and/or in state-constrained control problems. Furthermore, approximate feedback solutions can be derived for problem formulations th... View full abstract»

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  • Inverse Liénard-Chipart problem

    Publication Year: 1976, Page(s): 426
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (112 KB)

    An inverse Lienard-Chipart problem is posed. It is shown that, in contrast to the inverse Hurwitz problem, it is not solvable using rational formulas. View full abstract»

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  • Automated design of control systems

    Publication Year: 1976, Page(s):436 - 437
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    First Page of the Article
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  • Optimal stochastic enforcement of parking regulations

    Publication Year: 1976, Page(s):354 - 358
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    Effective enforcement of no parking regulations, an essential operation in urban areas, is labor intensive and thus costly. Efficient, implementable enforcement strategies that can raise and keep compliance at a desired high level are needed. It is the objective of this work to determine such strategies. First a model relating enforcement (input) to compliance (output) was obtained on the basis of... View full abstract»

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  • An eigenvalue sensitivity study of a high temperature gas-cooled reactor system

    Publication Year: 1976, Page(s):422 - 423
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (208 KB)

    This correspondence discusses the application of an eigenvalue sensitivity method [1] to a linear, time-invariant model of the high-temperature gas-cooled reactor (HTGR) manufactured by General Atomic. It is shown that for this type of system with distinct eigenvalues, a relation can be obtained between the solutions to the classical sensitivity. equation and the eigenvalue and eigenvector sensiti... View full abstract»

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  • Minimal realization of a transfer function matrix in canonical form

    Publication Year: 1976, Page(s):399 - 401
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB)

    An algorithm is presented to obtain a minimal-order realization of a linear time invariant multivariable system from a given rational transfer function matrix. The procedure yields the dynamical equations directly in a canonical form, and it is computationally very efficient. View full abstract»

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  • Numerical solution of the state dependent noise problem

    Publication Year: 1976, Page(s):419 - 420
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (208 KB)

    A numerical technique is given for solving the matrix quadratic equation that arises in the optimal stationary control of linear systems with state (and/or control) dependent noise. The technique exploits fully existing, efficient algorithms for the matrix Lyapunov and Ricatti equations. The computational requirements are discussed, with an associated example. View full abstract»

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  • Modal matching in time-delay control systems

    Publication Year: 1976, Page(s):426 - 428
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB)

    The problem of matching a linear time-delay system to a given time-delay model is considered and solved in state-space form. The system under control is assumed in its phase-variable form. A two-dimensional example is worked out to illustrate the solution method. View full abstract»

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  • Extremum controller design

    Publication Year: 1976, Page(s):388 - 391
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    An extremum "on-off" controller whose detailed description is given here is designed to continuously operate an industrial process at the extreme value of the process output. The process investigated consists of the following in cascade: a pure time delay, a parabolic function, and a first-order lag. A simple method is presented for selection of the three controller parameters, a gain, a velocity ... View full abstract»

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  • A note on the single-input optimal regulator problem

    Publication Year: 1976, Page(s):430 - 431
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB)

    A simple method for obtaining the optimal control law for single-input systems without solving the Riccati equation is presented. View full abstract»

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  • Decentralized feedback controls for the brakeless operation of multilocomotive powered trains

    Publication Year: 1976, Page(s):358 - 363
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (616 KB)

    This short paper presents an application of linear regulator theory to the control of multilocomotive powered unit trains. Locomotives are taken to be situated at the front, middle, and end of the train. Their feedback controls are linear functions of the deviations in locomotive schedule velocity and the coupler forces around the locomotive. The controls are designed by assuming that various loco... View full abstract»

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  • An adaptive terminal guidance scheme based on an exponential cost criterion with application to homing missile guidance

    Publication Year: 1976, Page(s):371 - 375
    Cited by:  Papers (52)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    For a linear stochastic system minimizing the expected value of an exponential function of a quadratic yields a control law for the terminal guidance problem which operates linearly on the estimated states. The control gains are explicit functions of the error variance in estimating the state. It is shown that the control gains can be calculated by combining a precalculated matrix determined by a ... View full abstract»

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  • Necessary conditions for a class of smooth second-order distributed systems

    Publication Year: 1976, Page(s):424 - 426
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (232 KB)

    Necessary conditions are derived for the optimum control of a class of smooth second-order distributed systems subject to general boundary conditions of the Neumann type. View full abstract»

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  • Asymptotic root loci of multivariable linear optimal regulators

    Publication Year: 1976, Page(s):378 - 382
    Cited by:  Papers (74)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (568 KB)

    The asymptotic loci of the closed-loop poles of the multivariable time-invariant linear regulator are considered as the weight on the input in the criterion approaches zero. It is proved that those poles that go to infinity group into several Butterworth configurations of different orders and with different radii. It is furthermore shown that the first-order patterns are easily explicitly determin... View full abstract»

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  • On lumped state-space models of a diffusion process

    Publication Year: 1976, Page(s):408 - 410
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    Finite-difference methods are used to derive lumped state-space models of a diffusion process. The accuracy of the lumped models is primarily determined by the number of intervals used. A refinement of the approximations to the partial derivatives only improves this accuracy to a certain extent. The study also shows that it is important to use smaller intervals near the ends of the rod. 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