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IEEE Transactions on Automatic Control

Issue 10 • October 1987

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Displaying Results 1 - 23 of 23
  • [Front cover and table of contents]

    Publication Year: 1987, Page(s): 0
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    Freely Available from IEEE
  • Scanning the issue

    Publication Year: 1987, Page(s): 849
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    Freely Available from IEEE
  • Editorial: Why H-infinity?

    Publication Year: 1987, Page(s): 850
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    Freely Available from IEEE
  • L^{1}-optimal compensators for continuous-time systems

    Publication Year: 1987, Page(s):889 - 895
    Cited by:  Papers (146)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (581 KB)

    Previous work has been concerned with minimizing thel^{1}-norm of an error pulse response for discrete-time SISO [1] and MIMO [2] systems. In this paper we study the problem of minimizing the L1-norm of the error impulse response for SISO continuous-time systems. This problem is quite different from the discrete-time problem in that irrational solutions are obtained even when... View full abstract»

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  • Fast computation of achievable feedback performance in mixed sensitivityH^{∞}design

    Publication Year: 1987, Page(s):896 - 906
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (894 KB)

    The computational bottleneck of theH^{infty}design has been recognized to be the "ε-iteration," a computationally demanding direct search of the minimum achievableH^{infty}performance. Verma and Jonckheere showed that the optimalH^{infty}performance can be characterized as the spectral radius of the so-called "Toeplitz plus Hankel" operator. Even before the ap... View full abstract»

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  • On robust Hurwitz polynomials

    Publication Year: 1987, Page(s):909 - 913
    Cited by:  Papers (86)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    In this note, Kharitonov's theorem on robust Hurwitz polynomials is simplified for low-order polynomials. Specifically, forn = 3, 4, and 5, the number of polynomials required to check robust stability is one, two, and three, respectively, instead of four. Furthermore, it is shown that forn geq 6, the number of polynomials for robust stability checking is necessarily four, thu... View full abstract»

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  • Divisors of polynomial matrices: Theory and applications

    Publication Year: 1987, Page(s):916 - 920
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (492 KB)

    In this note divisorsG(s)of a given polynomial matrixN(s)are discussed. The note deals with the following problems: extraction of a greatest right (left) divisor ofN(s), computation for a given state-space system(C, A, B)a state-space feedback making the system(C, A + BF, B)maximally or appropriately observable, and determination for a given s... View full abstract»

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  • Solution of the Zakai equation by separation of variables

    Publication Year: 1987, Page(s):941 - 943
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (310 KB)

    An exact expression for the unnormalized conditional density is derived for certain nonlinear estimation problems. The basic method is to solve the Zakai equation using separation of variables. The new filter is a generalization of the Kalman-Bucy filter, the Benes̆ filter, and other nonlinear filters within a unified framework. View full abstract»

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  • [Back cover]

    Publication Year: 1987, Page(s): 0
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    Freely Available from IEEE
  • Smoothed (conditional) perturbation analysis of discrete event dynamical systems

    Publication Year: 1987, Page(s):858 - 866
    Cited by:  Papers (127)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (856 KB)

    A new sample path analysis approach based on the smoothing property of conditional expectation for estimating the performance sensitivity of discrete event dynamical systems is proposed. Several examples are presented to show how this approach overcomes a difficulty of the ordinary infinitesimal perturbation analysis. The basic message is that one can get more knowledge about the system performanc... View full abstract»

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  • Basis factorization method for multistage linear programming problems with an application to optimal energy plant operation

    Publication Year: 1987, Page(s):851 - 857
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB)

    An algorithm based on the basis factorization method for solving multistage linear programming problems is presented. In applying linear programming for optimal dynamic-plant operation, the constraint appears in the form of a staircase structure. When pivotings occur within each stage, the inversion of the basis matrix is easily obtained using inversions of small square diagonal blocks. In general... View full abstract»

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  • Feedback linearization families for nonlinear systems

    Publication Year: 1987, Page(s):935 - 940
    Cited by:  Papers (60)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (552 KB)

    Characterizations are developed for parameterized, linear, dynamic feedback control laws that can arise when linearizing a nonlinear, dynamic feedback control law for a specified nonlinear system about a family of constant operating points. Such characterizations are important in applying the recently-developed extended linearization design approach to various types of control problems. To illustr... View full abstract»

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  • Optimal control

    Publication Year: 1987, Page(s): 944
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (144 KB)

    First Page of the Article
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  • Local LQG/LTR controller design for decentralized systems

    Publication Year: 1987, Page(s):926 - 930
    Cited by:  Papers (28)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    The LQG/LTR design methodology for decentralized control systems is considered. Upper bounds on the norm of the multiplicative error matrix, that accounts for the interactions between the subsystems, are calculated. A total error function, which may represent the error between the design model and the true system, is defined. A decentralized design methodology, which uses only local models, is pre... View full abstract»

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  • On the stability of discrete-time sliding mode control systems

    Publication Year: 1987, Page(s):930 - 932
    Cited by:  Papers (388)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    The stability of discrete-time sliding mode control systems is investigated and a new sliding mode condition is suggested. It is shown that the control must have upper and lower bounds. A numerical example is discussed as an illustration. View full abstract»

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  • On admissibility of pseudoobservability and pseudocontrollability indexes

    Publication Year: 1987, Page(s):920 - 922
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    It has been shown recently that a given MIMO system may be represented by several equivalent state-space representations, referred to as overlapping or pseudocanonical forms, instead of the unique observability (controllability) canonical form. The structure of a pseudocanonical form is determined by a set of pseudoobservability (-controllability) indexes, analogous to the observability (controlla... View full abstract»

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  • Strong consistency of ML estimators using partial fraction and elementary subsystem representation of multivariable systems

    Publication Year: 1987, Page(s):867 - 876
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (984 KB)

    The strong consistency of ML estimators for partial fraction matrix (PFM) and elementary subsystem (ESS) representations of vector ARMA processes will be discussed for the case when the structure is overestimated. The main results of the paper are the off-line strong consistency theorems of ML estimators for PFM representation, when the number of poles is overestimated and for the ESS representati... View full abstract»

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  • A simple computational procedure for optimization problems with functional inequality constraints

    Publication Year: 1987, Page(s):940 - 941
    Cited by:  Papers (26)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (216 KB)

    In this note, a simple computational procedure is given for solving a class of optimization problems, where an objective function is to be minimized subject to conventional inequality constraints as well as to inequality constraints of the functional type. View full abstract»

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  • Exact design manifold control of a class of nonlinear singularly perturbed systems

    Publication Year: 1987, Page(s):933 - 935
    Cited by:  Papers (31)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    The integral manifold approach captures from a geometric point of view the intrinsic two-time-scale behavior of singularly perturbed systems. An important class of nonlinear singularly perturbed systems considered in this note are fast actuator-type systems. For a class of fast actuator-type systems, which includes many physical systems, an explicit corrected composite control, the sum of a slow c... View full abstract»

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  • Invariance of a strict Hurwitz property for uncertain polynomials with dependent coefficients

    Publication Year: 1987, Page(s):907 - 909
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    This note is concerned with the invariance of strict Hurwitz property for uncertain polynomials having dependent coefficients. A feasible test criterion is provided which reduces the conservatism of the Kharitonov theorem. View full abstract»

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  • Frequency domain conditions for the stability of perturbed polynomials

    Publication Year: 1987, Page(s):913 - 916
    Cited by:  Papers (47)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (424 KB)

    New necessary and sufficient conditions for the stability of perturbed polynomials of continuous systems are given in the frequency domain. The conditions are equivalent and in some respects more powerful than the well-known Kharitonov conditions. The new conditions allow considerable freedom in distributing the available uncertainty margin among the different coefficients of a polynomial and prov... View full abstract»

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  • Controllability and linearized regulation

    Publication Year: 1987, Page(s):877 - 888
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1272 KB)

    A nonlinear controllable plant, under mild technical conditions, admits a precompensator with the following property: along control trajectories joining pairs of states, the composite system (precompensator plus plant) is, up to first order, isomorphic to a parallel connection of integrators. View full abstract»

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  • Numerical aspects of disturbance decoupling by measurement feedback

    Publication Year: 1987, Page(s):922 - 926
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB)

    A numerically stable algorithm is given to determine orthogonal similarity transformations such that the system attains a certain condensed form. Using this condensed form, solvability of disturbance decoupling by measurement can be decided by inspection, and controllers can be computed by solving linear equations. 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