IEEE Transactions on Automatic Control

Issue 5 • May 1985

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Displaying Results 1 - 24 of 24
  • [Front cover and table of contents]

    Publication Year: 1985, Page(s): 0
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    Freely Available from IEEE
  • Editorial: Outstanding AC Transactions Paper Awards for 1982-1983

    Publication Year: 1985, Page(s): 417
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    Freely Available from IEEE
  • Extensions of the multiarmed bandit problem: The discounted case

    Publication Year: 1985, Page(s):426 - 439
    Cited by:  Papers (107)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1157 KB)

    There areNindependent machines. Machine i is described by a sequence{X^{i}(s), F^{i}(s)}whereX^{i}(s)is the immediate reward and F^{i}(s) is the information available before i is operated for the sth lime. At each time one operates exacfiy one machine; idle machines remain frozen. The problem is to schedule the operation of the machines so as to maximize the expect... View full abstract»

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  • On polynomial matrix spectral factorization by symmetric extraction

    Publication Year: 1985, Page(s):453 - 464
    Cited by:  Papers (64)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1259 KB)

    We revise the 1963 Davis algorithm [2] for the spectral factorization of a para-Hermitian nonnegative polynomial matrixPhi, by symmetric factor extraction: this algorithm is careless about zeros at infinity. By introducing the notion of diagonal reducedness ofPhi, we obtain an easy sufficient test for the absence of zeros at infinity. We show then how to getPhi, di... View full abstract»

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  • A dominance concept for optimal control with partially unknown initial conditions

    Publication Year: 1985, Page(s):491 - 494
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (394 KB)

    The problems considered here have costv(x_{o}, u), a quadratic in(x_{o}, u), wherexois interpreted as an initial condition anduas an unconstrained control variable. The aim is to chooseurationally when the only measurement available is the partial linear measurementy_{o} = Cx_{o}and whenushould be desirable for every x View full abstract»

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  • Dynamics of nonrigid articulated robot linkages

    Publication Year: 1985, Page(s):499 - 502
    Cited by:  Papers (38)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    This paper presents the kinematic and dynamic analysis of ann-link manipulator with flexible members. The deformation of a link from its rigid body position is modeled by a homogeneous transformation. The dynamic equations are obtained using Euler-Lagrange formulation. These equations are compared to those describing a rigid link mechanism. View full abstract»

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  • Fundamental, reachability, and observability matrices for discrete descriptor systems

    Publication Year: 1985, Page(s):502 - 505
    Cited by:  Papers (42)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (355 KB)

    This paper uses the fundamental matrix of a regular discrete descriptor system to derive expressions for descriptor reachability and observability matrices. Reachable and unobservable subspaces are defined. It is shown that the natural space for analyzing descriptor system properties isR^{2n}(wherenis the dimension of the system), not Rnas is the case for state-spa... View full abstract»

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  • A general stability theorem for linear discrete-time systems

    Publication Year: 1985, Page(s):505 - 507
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (234 KB)

    The strongest sufficient conditions for constraining zeros to be on or within a circular region in thezplane in terms of weighted absolute norms are derived using elementary geometry. It is shown that the weighted L1norm yields the strongest result. View full abstract»

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  • [Back cover]

    Publication Year: 1985, Page(s): 0
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    Freely Available from IEEE
  • Convergence properties of an optimal filter design with correlated output noise

    Publication Year: 1985, Page(s):487 - 488
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (216 KB)

    This note studies the convergence and stability properties of an optimal filter for systems with Markov measurement noise. The convergence and stability conditions for the design analyzed are the same as those for the optimal f'dter when the measurement noise is assumed to be a nonsingular white noise process. View full abstract»

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  • Measuring decision flexibility in production planning

    Publication Year: 1985, Page(s):447 - 452
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (600 KB)

    We present a measure of decision flexibility for production planning problems. The flexibility of a decision is related to the size of the choice set associated with this decision. In production planning problems this set is a convex polyhedron in an n-dimensional space. Our measure of flexibility is the volume of this set with additional information about the shape. By using a new method recently... View full abstract»

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  • On the complexity of decentralized decision making and detection problems

    Publication Year: 1985, Page(s):440 - 446
    Cited by:  Papers (209)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (896 KB)

    We study the computational complexity of the discrete versions of some simple but basic decentralized decision problems. These problems are variations of the classical "team decision problem" and include the problem of decentralized detection whereby a central processor is to select one of two hypotheses, based on l-bit messages from two noncommunicating sensors. Our results point to the inherent ... View full abstract»

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  • A new approach to synthesis problems in linear system theory

    Publication Year: 1985, Page(s):465 - 473
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1016 KB)

    We consider a rational nonlinear equation which is involved in the general synthesis (design) problem of linear multivariable systems. The complete solution of this equation, subject to causality, stability, and minimality constraints, is provided. Formal power series and, in particular, the theory of partial realizations, prove of central importance for the design problem. View full abstract»

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  • A note on the control of uncertain linear dynamical systems with constrained control input

    Publication Year: 1985, Page(s):484 - 486
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (216 KB)

    A method is presented to design a stabilizing saturated state feedback controller for linear continuous-time systems with bounded uncertainty acting via the input channel. View full abstract»

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  • Triangular decoupling for a binary distillation column under pressure control

    Publication Year: 1985, Page(s):474 - 477
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    The possibility of attaining complete decoupling of a distillation column under pressure control is studied using the state space model. It is shown that under the situation where the distillation column is under pressure control by the manipulation of the condenser duty, the complete decoupling using constant state feedback may not be attained, while the triangular decoupling can be attained with... View full abstract»

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  • Discretizing a multivariable continuous system with pure integration

    Publication Year: 1985, Page(s):510 - 512
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (216 KB)

    A multiinput multioutput linear time-invariant control system with a singular system matrix can be transformed in such a way that the integral of the state transition matrix can easily be calculated. Application of this transformation to the problem of discretization of a continuous-time plant and to the calculation of the time response between sampling instants of the plant with digital controlle... View full abstract»

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  • Optimal constant feedback with time-multiplied performance index for discrete-time linear systems

    Publication Year: 1985, Page(s):497 - 499
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB)

    The design problem of optimal output feedback controller for discrete-time linear time-invariant systems is investigated with a class of time-multiplied quadratic performance indexes. Necessary conditions for optimality are derived. It is shown via example that the design method using such a time-multiplied quadratic performance index improves the transient response of the system. View full abstract»

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  • Distributed estimation algorithms for nonlinear systems

    Publication Year: 1985, Page(s):418 - 425
    Cited by:  Papers (81)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (640 KB)

    In this paper, we consider the problem of combining the local conditional distributions of a random variable which have been generated by local observers having access to their private information. Sufficient statistics for the local distributions are communicated to a coordinator, who attempts to reconstruct the global centralized distribution using only the communicated statistics. We obtain a d... View full abstract»

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  • Sampling of a system with a time delay

    Publication Year: 1985, Page(s):507 - 510
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    This note deals with the problem of sampling a continuous-time system which contains a time delay. It is shown that the infinite-dimensional continuons-time system can be represented by a finite-dimensional sampled data system. It is shown that there are simple expressions for the sampled data state-space representations. View full abstract»

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  • Minimal-order estimation of multivariable continuous time stochastic linear systems

    Publication Year: 1985, Page(s):483 - 484
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (208 KB)

    Minimal-order state estimation of continuous time, multiinput, multioutput stochastic linear systems is considered. A necessary and sufficient condition for order minimality is obtained in terms of the internal system structure. View full abstract»

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  • On input-dependent system identification by Monte Carlo approach

    Publication Year: 1985, Page(s):480 - 483
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    The problem of a weighted least-squares approximation of a memoryless system within a given class of models is discussed, and an identification algorithm leading to the best model when only input-output data are accessible is derived using a concept of random choice of inputs. View full abstract»

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  • Model reduction: Identifying partitions for structured aggregates

    Publication Year: 1985, Page(s):478 - 480
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    Reduced-order state vectors formed by partitioning the state and summing or averaging components in each partition group are considered. Evidence of reducibility in the form of invariant response is shown to propagate through ordered families of partitions, making it possible to identify reducible partitions from very coarsely lumped system responses. View full abstract»

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  • An explicit formula for the suboptimal control of linear systems

    Publication Year: 1985, Page(s):488 - 491
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    The suboptimal control of a linear system can be expressed in terms of the system parameters by a simple, explicit formula. At the same time, the suboptimal state (trajectory) is obtained. An example is worked out to illustrate the accuracy as compared to the Riccati solution. View full abstract»

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  • Discrete-time optimal feedback controllers with time-multiplied performance indexes

    Publication Year: 1985, Page(s):494 - 496
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB)

    A class of optimal state and output feedback control laws for discrete-time time-invariant linear systems which minimizes a class of discrete-time time-multiplied performance indexes is presented. A necessary condition, an existence condition, and a sufficient condition for the control laws are derived. A simple example is given to illustrate the effectiveness of the proposed control laws. 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