IEEE Transactions on Automatic Control

Issue 5 • May 1987

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

    Publication Year: 1987, Page(s): 0
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  • Scanning the issue

    Publication Year: 1987, Page(s): 369
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  • Editoral: Outstanding AC transactions paper awards for 1984-1985

    Publication Year: 1987, Page(s): 370
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  • Euclidean condition and block relative gain: Connections, conjectures, and clarifications

    Publication Year: 1987, Page(s):405 - 407
    Cited by:  Papers (30)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (395 KB)

    Given an arbitrary nonsingular complex matrix, certain quantitative relationships between its Euclidean condition number and its associated block relative gains are established. In addition, an as yet unproven relation of this type is conjectured. The control theoretic implications of the established relations are briefly discussed, clarifying the role of the block relative gain concept in control... View full abstract»

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  • Pole assignment in a specified disk

    Publication Year: 1987, Page(s):423 - 427
    Cited by:  Papers (188)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (443 KB)

    The problem of assigning all poles of a closed-loop system in a specified disk by state feedback is considered for both continuous and discrete systems. A state feedback control law is determined by using a discrete Riccati equation. This kind of pole assignment problem is namedD-pole assignment, and its relation to the optimal control problem and its robustness properties are discussed... View full abstract»

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  • Disturbance attenuation andH^{∞}optimization: A design method based on the algebraic Riccati equation

    Publication Year: 1987, Page(s):427 - 429
    Cited by:  Papers (220)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    This note presents a method for designing a state feedback control law to reduce the effect of disturbances on the output of a given linear system. The problem under consideration involves attenuating the disturbances to a prespecified level. The construction of the state feedback control law requires the solution of a certain algebraic Riccati equation. By applying the procedure with successively... View full abstract»

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  • Controllability of generalized linear time-invariant systems

    Publication Year: 1987, Page(s):429 - 432
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB)

    This note deals with the problem ofc-controllability of generalized systems. A new criterion for determiningc-controllability of generalized systems is established. With controllability established, it is shown that it is always possible to transfer the system from the initial position to any target by a control vector-valued function whose elements are polynomials of bounded... View full abstract»

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  • Computation of minimum-time feedback control laws for discrete-time systems with state-control constraints

    Publication Year: 1987, Page(s):432 - 435
    Cited by:  Papers (150)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (450 KB)

    The problem of finding a feedback law that drives the state of a linear discrete-time system to the origin in minimum-time subject to state-control constraints is considered. Algorithms are given to obtain facial descriptions of theM-step admissible sets. These descriptions are then used to characterize the complete class of minimum-time feedback laws. Moreover, the characterization lea... View full abstract»

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  • Proof of quasi-adaptivity for the m-measurement feedback class of stochastic control policies

    Publication Year: 1987, Page(s):447 - 451
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    It is shown that them-measurement feedback (mM) policy for nonlinear stochastic control, performs as well or better than the open-loop optimal policy and hence becomes one of only a few suboptimal policies presently known to be quasi-adaptive in the sense of Witsenhausen. View full abstract»

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  • Introduction to ROBOTICS mechanics and control

    Publication Year: 1987, Page(s):463 - 464
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  • [Back cover]

    Publication Year: 1987, Page(s): 0
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  • Stability of slow adaptation for non-SPR systems with disturbances

    Publication Year: 1987, Page(s):451 - 455
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (536 KB)

    Sufficient conditions are given for the existence of a bounded uniformly asymptotically stable (u.a.s.) solution of the model reference adaptive control system. These conditions, which do not require any matching assumptions or knowledge of the order of the plant, provide an estimate of the region of attraction and a bound on the average squared tracking error for which the u.a.s. property of the ... View full abstract»

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  • On the robustness of multivariable linear feedback systems in state-space representation

    Publication Year: 1987, Page(s):407 - 410
    Cited by:  Papers (28)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    A singular values-based approach to specify the robustness of a multivariable linear feedback system in state-space representation is investigated. The robustness measure which is considered is the largest spectral norm of an additive uncertainty in the closed-loop system matrix, for which stability is guaranteed. It is shown that under the constraint of prescribed pole placement, a lower bound fo... View full abstract»

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  • A new decoupling precompensator for indirect adaptive control of multivariable linear systems

    Publication Year: 1987, Page(s):455 - 459
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    This note presents an indirect adaptive control algorithm for a class of multiple-input multiple-output (MIMO) linear systems. The controller consists of four parts. A precompensator and a feedback filter diagonalize the transfer function between a set of auxiliary control variables viand a set of auxiliary output variables xi. Each SISO system with input viand out... View full abstract»

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  • Design of adaptive digital set-point tracking PID controllers incorporating recursive step-response matrix identifiers for multivariable plants

    Publication Year: 1987, Page(s):459 - 462
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    It is shown that, by incorporating fast on-line recursive identifiers to provide updated step-response matrices for inclusion in digital proportional-plus-integral-plus-derivative control laws, highly effective adaptive digital set-point tracking controllers can be readily designed for multivariable plants. The effectiveness of such an adaptive controller is illustrated by designing a digital set-... View full abstract»

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  • Jordan pair assignment via state feedback

    Publication Year: 1987, Page(s):421 - 423
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    This note considers the assignment of the eigenstructure of the closed-loop system via state feedback. This assignment is achieved by assigning the Jordan pair of the denominator matrix polynomial of the controllable MIMO system via state feedback. It turns out that for proper assignment one must take into account the almost forgotten infinite eigenstructure of the system, even though they are inv... View full abstract»

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  • Adaptive control of ARMA plants using worst-case design by semi-infinite optimization

    Publication Year: 1987, Page(s):388 - 396
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (976 KB)

    This paper presents a new approach to on-line control system tuning, based on worst-case design using semi-infinite optimlzation, together with a plant uncertainty identification scheme which this approach requires. View full abstract»

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  • Continuous-time model reference adaptive control based on weighting functions

    Publication Year: 1987, Page(s):442 - 444
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB)

    This note presents a model reference adaptive control for a plant with unknown system degree. A continuous-time observer based on the weighting function is introduced, instead of a finite-dimensional state variable filter which needs an upper bound of the plant degree. The state is reconstructed by a sum of convolution integrals in a finite span of time. View full abstract»

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  • Eigenvalue-generalized eigenvector assignment by output feedback

    Publication Year: 1987, Page(s):417 - 421
    Cited by:  Papers (78)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    This note generalizes the previous results of the closed-loop eigenstructure assignment via output feedback in linear multivariable systems. Necessary and sufficient conditions for the closed-loop eigenstructure assignment by output feedback are presented. Some known results on entire eigenstructure assignment are deduced from this result. View full abstract»

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  • A robust optimal model matching control

    Publication Year: 1987, Page(s):410 - 414
    Cited by:  Papers (25)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    A deductive design approach is proposed to develop an optimal feedback control, while preserving quantitative robustness and noise rejection properties. The design procedure involves the minimization of a suitably selected performance index to reflect a required model matching (following) objective. Gradient projection schemes, applied to the performance index and feasible constraints, are used to... View full abstract»

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  • Discrete-time adaptive control of deterministic fast time-varying systems

    Publication Year: 1987, Page(s):444 - 447
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    In this note, the earlier work of Xie and Evans on discrete-time adaptive control for deterministic time-varying systems is extended to the case of approximating the plant parameters by the truncated Taylor series. When the plant parameters are polynomials of time, the algorithm will ensure that the closed-loop system is globally convergent and globally stable. It is shown that this scheme is able... View full abstract»

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  • An algorithm to assign eigenvalues in a Hessenberg matrix: Single input case

    Publication Year: 1987, Page(s):414 - 417
    Cited by:  Papers (39)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    We propose a conceptually simple algorithm to assign eigenvalues in a Hessenberg matrix. The method is based on the evaluation of a simple recursive relation and it is extremely easy to program on a computer. Numerical experiments compare favorably to those of other methods recently proposed for the problem. View full abstract»

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  • An exact penalty function algorithm for control problems with state and control constraints

    Publication Year: 1987, Page(s):380 - 387
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (768 KB)

    This paper describes an exact penalty function algorithm for solving control problems with state, control, and terminal constraints and establishes its convergence properties. A convex optimal control problem is defined whose solution yields a search direction which satisfies the control constraints and reduces a first-order estimate of the exact penalty function. Step length is determined using a... View full abstract»

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  • Variable structure controller design for spacecraft nutation damping

    Publication Year: 1987, Page(s):435 - 438
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    Variable structure systems theory is used to design an automatic controller for active nutation damping in momentum biased stabilized spacecraft. Robust feedback stabilization of roll and yaw angular dynamics is achieved with prescribed qualitative characteristics which are totally independent of the spacecraft defining parameters. View full abstract»

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  • Feedback linearizing control of switched reluctance motors

    Publication Year: 1987, Page(s):371 - 379
    Cited by:  Papers (327)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (904 KB)

    Motivated by technological advances in power electronics and signal processing, and by the interest in using direct drives for robot manipulators, we investigate the control problem of high-performance drives for switched reluctance motors (SRM's). SRM's are quite simple, low cost, and reliable motors as compared to the widely used dc motors. However, the SRM presents a coupled nonlinear multivari... 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