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Date 18-20 June 1986

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Displaying Results 1 - 25 of 388
  • Proceedings of the 1986 American Control Conference

    Publication Year: 1986, Page(s): 1
    IEEE is not the copyright holder of this material | PDF file iconPDF (27 KB)
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  • Copyright page

    Publication Year: 1986, Page(s): 2
    IEEE is not the copyright holder of this material | PDF file iconPDF (20 KB)
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  • AACC Awards

    Publication Year: 1986, Page(s): 3
    IEEE is not the copyright holder of this material | PDF file iconPDF (116 KB)
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  • Operating Committee

    Publication Year: 1986, Page(s): 4
    IEEE is not the copyright holder of this material | PDF file iconPDF (47 KB)
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  • Program Committee

    Publication Year: 1986, Page(s): 4
    IEEE is not the copyright holder of this material | PDF file iconPDF (47 KB)
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  • Program

    Publication Year: 1986
    Request permission for commercial reuse | PDF file iconPDF (1144 KB)
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  • Foreword

    Publication Year: 1986, Page(s): 1
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  • Design of the IMC Filter by using the Structured Singular Value Approach

    Publication Year: 1986, Page(s):1 - 6
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (407 KB)

    The Internal Model Control (IMC) structure has been widely recognized as very useful in clarifying the issues related to the mismatch between the model used for controller design and the actual process. The structure also gives rise to a two step controller synthesis procedure, of which the second step deals with the design of a low pass filter such that robustness with respect to model-plant mism... View full abstract»

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  • Spectral Radius Design for Robust Multivariable Control

    Publication Year: 1986, Page(s):7 - 10
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (334 KB)

    A sufficient condition for robust stability and disturbance rejection in multivariable control systems is presented. The condition is a bound on the spectral radius of a weighted set of closed loop transfer function matrices. Frequency dependent weighting matrices are determined from structured bounds on plant uncertainties and performance specifications. For certain clases of robust control probl... View full abstract»

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  • The Dynamic Block Relative Gain and its Role in the Design of Robust Decentralized Control

    Publication Year: 1986, Page(s):11 - 16
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (308 KB)

    The major criticism related to the use of the Block Relative Gain (BRG) (and for that matter The Relative Gain) as a closed-loop interaction measure is the fact that it is developed under the assumption of perfect control in the complementary subsystem(s). View full abstract»

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  • Toward the Development of Prudent and Robust Self-Tuning Adaptive Controllers for Process Control

    Publication Year: 1986, Page(s):17 - 24
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (609 KB)

    The practical requirements for the routine application of adaptive controllers in the process industry are stringent and demand a comprehensive approach to adaptive controller design and implementation. Some of the key issues involved in the development of a prudent and robust self-tuning controller are reviewed. Examples with a proto-type controller are used as illustrations. View full abstract»

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  • Impact of Modeling Decisions on the Robustness of Tubular Reactors

    Publication Year: 1986, Page(s):25 - 30
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (338 KB)

    A robustness analysis procedure is applied to the control of tubular fixed-bed reactors. The analysis utilizes a generalized uncertainty description to allow for zero or pole migration across the imaginary axis, in an attempt to reduce conservatism associated with such robustness tests. The tubular reactor control consists of critical modeling steps which have to be accounted for during the contro... View full abstract»

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  • The Equivalence of Non-Interacting Control System Design Methods in Distillation

    Publication Year: 1986, Page(s):31 - 38
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (531 KB)

    Singular Value Analysis has been used to design structural compensators for the material balance control scheme in distillation. The control system obtained is similar to (1) column profile control, (2) implicit decoupling, (3) modal control, (4) output decoupling and, under some conditions, (5) extensive variable control. The material balance control scheme does not require an input compensator b... View full abstract»

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  • Robust Controller Design for Linear Stochastic Systems with Uncertain Parameters

    Publication Year: 1986, Page(s):39 - 44
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (404 KB)

    In this paper we address the problem of robust control of linear time-invariant stochastic systems with parametric uncertainties under two different approaches namely minimum sensitivity and minimax. We first develop the necessary mathematical framework for such an analysis, and then conduct a comparative study of performance attained by controllers of different orders, derived under these two app... View full abstract»

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  • Stochastic Teams with Nonclassical Information Revisited: When is an Affine Law Optimal?

    Publication Year: 1986, Page(s):45 - 50
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (470 KB)

    In this paper we consider a parameterized family of two-stage stochastic control problems with nonclassical information patterns, which includes the famous 1968 counterexample of Witsenhausen. We show that the parameter region can be partitioned into two regions, in one of which the optimal solution is linear whereas in the other it is inherently nonlinear. In the latter, the best piecewise-consta... View full abstract»

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  • Constrained Variance Design using State Covariance Assignment

    Publication Year: 1986, Page(s):51 - 56
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (403 KB)

    Performance objectives which are expressed as upper bounds on the variances of the outputs and inputs are common in stochastic control problems. Unfortunately, all of the control methods which are currently used to attempt to satisfy these constraints deal with the actual objectives indirectly. The purpose of this paper is to provide an alternative methodology which deals more directly with the ac... View full abstract»

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  • Decoupling Stochastic Systems under Plant and Controller Parameter Variation

    Publication Year: 1986, Page(s):57 - 62
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (319 KB)

    This paper presents an algorithm for decoupling a stochastic system which has parameter variation in the plant as well as the controller. The compensator is based upon a constant or dynamic output feedback structure. By minimizing a performance measure incorporating trajectory sensitivity and optimal tracking, a controller is constructed which decouples the system in spite of noise and parameter v... View full abstract»

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  • Feedback and Feedforward LQG Controller Design

    Publication Year: 1986, Page(s):63 - 69
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (442 KB)

    A solution for the LQG stochastic optimal control problem is obtained in the z-domain for systems where both feedforward and feedback control may be used. A two degrees of freedom feedback structure is employed and the system includes both coloured measurement noise and both measurable and unmeasurable disturbances The solution is obtained in a simple form which is particularly appropriate in self... View full abstract»

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  • Stochastic Recursive Algorithm with Modified SPR Condition

    Publication Year: 1986, Page(s):70 - 76
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (351 KB)

    A new adaptive stochastic algorithm is introduced which guarantees the convergence when the passivity condition fails without a priori information about the unknown model. The proposed algorithm consists of three stages. In the first stage an autoregressive model is fitted to estimate the parameters of the autoregressive polynomial. In the second stage, a white noise dither signal is used to estim... View full abstract»

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  • Stabilizing Uncertain Systems: Recovering Full State Feedback Performance via an Observer

    Publication Year: 1986, Page(s):77 - 81
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    This paper is concerned with the stabilization of uncertain systems via output feedback. The principal result demonstrates that if an uncertain system can be stabilized via linear static state feedback, then one can stabilize uncertain systems via dynamic output feedback which are "arbitrarily close" to the original system. Most importantly, these results are achieved under relatively weak assumpt... View full abstract»

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  • Asymptotic and Transient Decomposition in the Design of Robust Controllers for Uncertain Nonlinear Systems

    Publication Year: 1986, Page(s):82 - 85
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (203 KB)

    A set of analytical procedures and numerical criteria for the design of robust controllers yielding quantitative reference tracking and disturbance rejection is outlined. A preliminary result that extends servomechanism notions to the uncertain, nonlinear case is given in conjunction with simulation evidence. View full abstract»

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  • Stability/Instability Analysis of Continuous-Time Adaptive Controllers for Pure Delay Systems

    Publication Year: 1986, Page(s):86 - 90
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (329 KB)

    In the paper we are concerned with the problem of adaptively controlling pure delay systems. we are firstly interested in determining the conditions underwhich stability is lost due the umodeled time delay. To address this problem we consider the case of periodic signals and derive: i) Necessary and sufficient conditions for stability when the signals are of specified frequences, ii) Stability/ins... View full abstract»

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  • Stability of Reduced-Order Adaptive Control Systems

    Publication Year: 1986, Page(s):91 - 96
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (501 KB)

    -In this paper we derive, in a single framework, conditions encompassing those for both local and global BIBO stability of a linear multivariable discrete-time reduced-order direct or indirect adaptive (or general time-varying) control system. These conditions indicate that the system will be BIBO stable if the norm of the system parameter error matrix is bounded by an l1 function super... View full abstract»

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  • Stability of Slow Adaptation for Non-SPR Systems with Disturbances

    Publication Year: 1986, Page(s):97 - 102
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (460 KB)

    Using the theory of integral manifolds, followed by the method of averaging. 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 boun... View full abstract»

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  • Adaptive Control of Partially Known Systems

    Publication Year: 1986, Page(s):103 - 108
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (301 KB)

    We present schemes for both continuous and discrete time adaptive control of linear time invariant systems. which are partially known, along with analysis of their convergence properties. View full abstract»

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