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IEEE Transactions on Automatic Control

Issue 6 • Date December 1979

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Displaying Results 1 - 25 of 37
  • [Front cover and table of contents]

    Publication Year: 1979, Page(s): 0
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  • In memoriam: Giorgio Quazza

    Publication Year: 1979, Page(s): 833
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  • Factorization methods for discrete sequential estimation [Book reviews]

    Publication Year: 1979, Page(s):990 - 992
    Cited by:  Papers (1)
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  • Dynamical systems and their applications: Linear theory [Book reviews]

    Publication Year: 1979, Page(s):992 - 993
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  • Managerial planning: An optimum and stochastic control approach [Book reviews]

    Publication Year: 1979, Page(s): 993
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  • [Back cover]

    Publication Year: 1979, Page(s): 0
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  • A transformation for necessary optimality conditions for systems with polynomial nonlinearities

    Publication Year: 1979, Page(s):983 - 985
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    This work shows a new formulation means to obtain the optimal control for systems having polynomial nonlinearities by using functional analytic methods. The polynomic system is reduced to a quadratic form by introducing a set of pseudostate variables and the structure of the system is characterized by a set of matrices. A new set of optimizing equations is obtained and the necessary and sufficient... View full abstract»

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  • On the irreducibility condition in the structural controllability theorem

    Publication Year: 1979, Page(s):963 - 966
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    It is known that the structural system (A,B) is structurally controllable if and only if the corresponding matrix [A B] is generically full rank and irreducible. In this paper it is shown that the irreducibility condition alone implies that every nonzero mode of (A,B) is generically controllable. This result provides an easy proof to the structural controllability theorem stated above. In addition... View full abstract»

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  • Three-phase induction motor impulse drive method

    Publication Year: 1979, Page(s):834 - 842
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (776 KB)

    A three-phase induction motor is successfully driven in a stepwise motion, that is, one small rotating angle of the motor shaft at a time. This is accomplished by applying a three-phase power source voltage in pulse form through thyristors to the primary winding of the motor. The drive method based on this entirely new principle is dubbed "impulse drive." It is classified into six types with somew... View full abstract»

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  • Optimal filters for bilinear systems with nilpotent Lie algebras

    Publication Year: 1979, Page(s):948 - 953
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    We consider a bilinear signal process driven by a Gauss-Markov process which is observed in additive, white, Gaussian noise. An exact stochastic differential equation for the least squares filter is derived when the Lie algebra associated with the signal process is nilpotent. It is shown that the filter is also bilinear and moreover that it satisfies an analogous nilpotency condition. Finally, som... View full abstract»

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  • Robust solution of perturbed dynamical equations from within a convex restraint set

    Publication Year: 1979, Page(s):921 - 926
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (600 KB)

    In [1] and [2], the notion of "robust solution" was defined for a system of perturbed linear dynamical equations. Heuristically speaking, a robust solution (input) x(\cdot) is one for which the dependent variable (output) can be guaranteed to lie in a certain interval-independently of nature's choice of perturbation within given bounds. In this paper, we go b... View full abstract»

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  • A new tracker for air-to-air missile targets

    Publication Year: 1979, Page(s):900 - 905
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (640 KB)

    An extended Kalman filter is developed to aid the tracking of an air-to-air missile from a maneuvering target aircraft. The filter exploits knowledge of the dominant aerodynamically induced lift and drag forces of a nonthrusting missile employing proportional navigation guidance, and it also accounts for the dynamic lag and bandwidth effects of the missile seeker, guidance, and control systems. In... View full abstract»

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  • Multipartitioning linear estimation algorithms: Continuous systems

    Publication Year: 1979, Page(s):937 - 944
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (784 KB)

    The partitioned estimation algorithms of Lainiotis for the linear continuous-time state estimation problem have been generalized in this paper in two important ways. First, the initial condition of the estimation problem can, using the results of this paper, be partitioned into the sum of an arbitrary number of jointly Gaussian random variables; and second, these jointly Gaussian random variables ... View full abstract»

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  • A Hessenberg-Schur method for the problem AX + XB= C

    Publication Year: 1979, Page(s):909 - 913
    Cited by:  Papers (102)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    One of the most effective methods for solving the matrix equation AX+XB=C is the Bartels-Stewart algorithm. Key to this technique is the orthogonal reduction of A and B to triangular form using the QR algorithm for eigenvalues. A new method is pro... View full abstract»

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  • Parametric sensitivity of a statistical experiment

    Publication Year: 1979, Page(s):982 - 983
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (232 KB)

    We describe a general procedure for evaluating the parametric sensitivity of a Monte Carlo experiment and illustrate its effective applications. View full abstract»

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  • A filter for separating time-limited modal signals

    Publication Year: 1979, Page(s):926 - 932
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB)

    A two-stage deterministic filter is derived which can separate two sets of modal signals when presented with their arbitrary mixed sum on a fixed finite time interval. The assumptions are 1) that the mode locations in the complex plane are known for one set (for example, a finite Fourier series has known modes relative to a given time interval) and 2) the two sets of modes are disjoint. Using inte... View full abstract»

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  • Linear recursive state estimators under uncertain observations

    Publication Year: 1979, Page(s):944 - 948
    Cited by:  Papers (79)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    For linear systems with uncertain observations, we investigate the existence of recursive least-squares state estimators. The uncertainty in the observations is caused by a binary switching sequence γk, which is specified by a conditional probability distribution and which enters the observation equation as ... View full abstract»

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  • An example of the impact of information structure on decentralized multicriterion control problems

    Publication Year: 1979, Page(s):978 - 980
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    In noncooperative decentralized decision making, the information available to the controllers has a far more significant role than in the case of a centralized, or even a decentralized, single objective control problem. In order to illustrate a significant aspect of the role of the information structure, this paper presents and discusses an example of a differential game in which a decision maker ... View full abstract»

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  • Adaptive control of Markov chains, I: Finite parameter set

    Publication Year: 1979, Page(s):953 - 957
    Cited by:  Papers (35)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    Consider a controlled Markov chain whose transition probabilities depend upon an unknown parameter α taking values in finite set A . To each α is associated a prespecified stationary control law \phi(\alpha ) . The adaptive control law selects at each time t the control actio... View full abstract»

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  • Maximum-likelihood estimation of a process with random transitions (failures)

    Publication Year: 1979, Page(s):932 - 937
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB)

    A process with random transitions is represented by the difference equation x_{n} = x_{n-1}+ u_{n} where unis a nonlinear function of a Gaussian sequence w_{n}. The nonlinear function has a threshold such that ... View full abstract»

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  • Eigenvalues of a matrix inside an ellipse and Chebyshev filter

    Publication Year: 1979, Page(s):986 - 987
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (160 KB)

    The conditions for a matrix to have all its eigenvalues inside an ellipse are obtained and explained in terms of a vector norm. A set of functions orthogonal on the ellipse is obtained and the relation between the Chebyshev filter and these functions is presented. The Butterworth filter is derived as a particular case. View full abstract»

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  • Teams with variable precision information structures: A model for organizational form

    Publication Year: 1979, Page(s):988 - 990
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    Motivated by considerations of optimal organizational form for a firm, a model is constructed that describes an organization as a team, each of whose members has access to the same basic information seen through noisy channels. The precision of the information received through the channels are the control parameters of the problem and serve to characterize the organization. A general linear-quadra... View full abstract»

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  • The convergence of AML

    Publication Year: 1979, Page(s):958 - 962
    Cited by:  Papers (77)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    In this work it is shown that provided a certain positive real condition is satisfied, the AML recursion for the parameters of a scalar ARMAX time series model converges with probability one without the need of monitoring. Previous proofs of convergence had effectively required that the recursion be monitored. View full abstract»

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  • Controllability of a discrete-time bilinear system

    Publication Year: 1979, Page(s):974 - 975
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (168 KB)

    In this note we examine the controllability of a discrete-time bilinear system characterized by an nth order difference equation. View full abstract»

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  • Positive definiteness of a quadratic functional

    Publication Year: 1979, Page(s):970 - 974
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    In a 1975 paper, Molinari [1] proved that under certain continuity and controllability hypotheses, the infinum of a quadratic linear functional subject to linear differential equations constraints and a linear terminal constraint, is a quadratic function of the initial state. We show here how to constructively find this quadratic form under the addition of a positivity assumption. We also show tha... 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