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IEEE Transactions on Automatic Control

Issue 5 • Date May 1986

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Displaying Results 1 - 25 of 27
  • [Front cover and table of contents]

    Publication Year: 1986, Page(s): 0
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    Freely Available from IEEE
  • Scanning the issue

    Publication Year: 1986, Page(s): 385
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  • Editorial: Reviewer quide revisited

    Publication Year: 1986, Page(s): 386
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    Freely Available from IEEE
  • Large scale systems modeling [Book Reviews]

    Publication Year: 1986, Page(s): 480
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    Freely Available from IEEE
  • [Back cover]

    Publication Year: 1986, Page(s): 0
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  • On undershoot and nonminimum phase zeros

    Publication Year: 1986, Page(s): 440
    Cited by:  Papers (29)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (128 KB)

    In this note we derive a simple necessary and sufficient condition for a stable system to exhibit an undershooting step response. Specifically, we show that undershoot occurs if and only if the plant has an odd number of real right-half plane zeros. View full abstract»

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  • The constrained Lyapunov problem and its application to robust output feedback stabilization

    Publication Year: 1986, Page(s):410 - 419
    Cited by:  Papers (49)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (872 KB)

    Given a dynamical system whose description includes time-varying uncertain parameters, it is often desirable to design an output feedback controller leading to asymptotic stability of a given equilibrium point. When designing such a controller, one may consider static (i.e., memoryless) or dynamic compensation. In this paper, we show that solvability of various output feedback design problems is i... View full abstract»

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  • Determining continuous-time state equations from discrete-time state equations via the principal q th root method

    Publication Year: 1986, Page(s):454 - 457
    Cited by:  Papers (31)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    Fast computational methods are developed for finding the equivalent continuous-time state equations from discrete-time state equations. The computational methods utilize the direct truncation method, the matrix continued fraction method, and the geometric-series method in conjunction with the principal q th root of the discrete-time system matrix for quick dete... View full abstract»

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  • Decentralized control using quasi-block diagonal dominance of transfer function matrices

    Publication Year: 1986, Page(s):420 - 430
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (944 KB)

    The purpose of this paper is to present a generalization of the Nyquist array method to blockwise decompositions, which is based upon a new version of block diagonal dominance. An additional flexibility of the proposed method is in partitioning of the system matrices into disjoint as well as overlapping submatrices, which increases considerably the class of control systems which can be designed vi... View full abstract»

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  • Identification of multivariable errors in variable models with dynamics

    Publication Year: 1986, Page(s):467 - 471
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (552 KB)

    This note considers the task of identifying a causal, linear, dynamic, multivariable system excited by stationary, zero-mean noise of unknown spectrum, and given measurements of the system inputs and outputs contaminated by independent, additive noise also of unknown spectra. Although the solution is in general not unique, finite-dimensional parameterizations of the solution set are given, even th... View full abstract»

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  • Simultaneous partial pole placement: A new approach to multimode system design

    Publication Year: 1986, Page(s):440 - 443
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    Simultaneous partial pole placement of a family of single-input single-output plants is proposed as a generalization of the classical pole placement and stabilization problems. This problem finds application in the design of a compensator for a family of linear dynamical systems. In this note we show that the proposed problem is equivalent to a new class of transcendental problem using stable, min... View full abstract»

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  • First-order corrections in optimal feedback control of singularly perturbed nonlinear systems

    Publication Year: 1986, Page(s):387 - 393
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (680 KB)

    In this paper first-order correction terms, developed by using the method of matched asymptotic expansions, are incorporated in the feedback solution of a class of singularly perturbed nonlinear optimal control problems frequently encountered in aerospace applications. This improvement is based on an explicit solution of the integrals arising from the first-order matching conditions and leads to c... View full abstract»

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  • Stable discrete adaptive control with unknown high-frequency gain

    Publication Year: 1986, Page(s):477 - 479
    Cited by:  Papers (26)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB)

    This note presents a globally stable adaptive control algorithm applicable to discrete-time single-input single-output linear time-invariant systems. A priori knowledge of neither the sign of the system's high-frequency gain nor an upper bound on its magnitude is needed to prove global stability. View full abstract»

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  • A multivariable generalized self-tuning controller with decoupling design

    Publication Year: 1986, Page(s):474 - 477
    Cited by:  Papers (31)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    This note describes a multivariable generalized self-tuning controller with decoupling which combines the classical pole-zero placement strategy with the optimal strategy for self-tuning control. The controller uses techniques of updating weighting polynomial matrices on line and eliminating the tracking errors without use of an integrator, and decouples the multivariable system. View full abstract»

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  • Fundamental equivalence of generalized state-space systems

    Publication Year: 1986, Page(s):431 - 439
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (784 KB)

    This paper defines a fundamental form of equivalence between two generalized state-space systems in terms of mappings of the solution sets of the describing differential equations together with mappings of the sets of restricted initial conditions. Properties of this equivalence relation are discussed and it is shown to be an alternative characterization of the system matrix relationship of comple... View full abstract»

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  • Performance of digital linear regulators which use logarithmic arithmetic

    Publication Year: 1986, Page(s):394 - 400
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (624 KB)

    This paper analyzes the performance of digital linear regulators which use finite-precision logarithmic arithmetic. A linear equation is derived which describes the steady-state covariance matrix of such a closed-loop regulator system. The utility of this covariance matrix in designing regulators which use logarithmic arithmetic is illustrated through several numerical examples and the presentatio... View full abstract»

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  • Tracking and classifying multiple targets without a priori identification

    Publication Year: 1986, Page(s):401 - 409
    Cited by:  Papers (68)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1056 KB)

    Based on a general target/sensor model which allows dependence among targets and state-dependent target detection, a Bayesian solution to the multitarget multisensor tracking problem is derived for cases where targets do not have a priori identification, i.e., targets are not labeled a priori. When this solution is applied to a class of independent target models, a more implementable class of algo... View full abstract»

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  • Convergence of an algorithm to find maximal state constraint sets for discrete-time linear dynamical systems with bounded controls and states

    Publication Year: 1986, Page(s):457 - 459
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    In [1] an algorithm was presented to find an approximant to the maximal state constraint set for a linear discrete-time dynamical system with polyhedral state and input hounds. Here it is shown that the algorithm will yield an approximant arbitrarily close to the maximal state constraint set and the number of iterations is given as a function of the prescribed precision of the approximant. View full abstract»

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  • On almost sure convergence of adaptive algorithms

    Publication Year: 1986, Page(s):471 - 474
    Cited by:  Papers (16)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    We present an extension of the Furstenberg-Kesten theorem on the convergence of random matrices. This extension is applied to the study of almost sure convergence of certain adaptive algorithms. In particular, we establish that the NLMS algorithm is almost surely convergent under extremely weak necessary and sufficient conditions. We also discuss the relationship of sufficient conditions that have... View full abstract»

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  • On time scaling for nonlinear systems: Application to linearization

    Publication Year: 1986, Page(s):459 - 462
    Cited by:  Papers (54)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    In this note, we propose a method to analyze systems in a time scale which is varied depending on the state such as dt/d\tau = s(x) (where t and τ are the actual time scale and that of new one, respectively, and s(x) is the function which we call time scaling function). Analysis... View full abstract»

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  • Robust linear filtering for multivariable stationary time series

    Publication Year: 1986, Page(s):462 - 466
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    We consider the problem of asymptotic noncausal linear filtering for multivariable second-order stationary time series, under spectral uncertainty in both the signal and the noise processes. The spectral uncertainty is modeled by ε-contaminated and p -point classes. For the case where both the signal and noise spectra are ε-contaminated, we assume th... View full abstract»

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  • On the order reduction of linear function observers

    Publication Year: 1986, Page(s):447 - 449
    Cited by:  Papers (24)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    This note analyzes a new algorithm presented in [1] for designing a linear function observer with a minimum number of arbitrary poles. It shows that the maximum order of the observer of [1] is \nu + ... + \nu_{p} - p for p \leq q and n - q for p ...
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  • On finding eigenvalue distribution of a matrix in several regions of the complex plane

    Publication Year: 1986, Page(s):445 - 447
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    A direct method is proposed for determining eigenvalue distribution of a matrix with respect to several important regions of the complex plane. These regions include half planes, shifted half planes, hyperbolas, sectors, quadrants, imaginary axis, region contained within two straight lines that pass through the orgin, etc. The method neither requires computation of the characteristic polynomial of... View full abstract»

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  • On robust Wiener signal estimation

    Publication Year: 1986, Page(s):466 - 467
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB)

    A minimax formulation is considered for the problem of designing robust linear causal estimators of continuous-time signals in noise. It is shown that the minimax estimation problem can generally be reduced to finding a least favorable pair of spectra. In particular, robust predictors, filters, and finite-lag smoothers are shown to be just the optimal predictors, filters, and smoothers, respective... View full abstract»

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  • Optimal control of deterministic systems via shifted Legendre polynomials

    Publication Year: 1986, Page(s):451 - 454
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    The synthesis of an optimal control function for deterministic systems described by integrodifferential equations is investigated. By using the elegant operational properties of shifted Legendre polynomials, a direct computational algorithm for evaluating the optimal control and trajectory of deterministic systems is developed. An example is given to illustrate the utility of this method. 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