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Decision and Control including the Symposium on Adaptive Processes, 1980 19th IEEE Conference on

Date 10-12 Dec. 1980

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Displaying Results 1 - 25 of 268
  • [Front cover and table of contents]

    Publication Year: 1980, Page(s): c1
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    Freely Available from IEEE
  • Foreword

    Publication Year: 1980, Page(s): i
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    Freely Available from IEEE
  • Command control as a process

    Publication Year: 1980, Page(s):1 - 6
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (503 KB)

    Military command control is described as a process for ultimately controlling a geographic area. Some of the requirements of this process are identified and models of it suitable for developing analytic procedures are presented. Two examples which highlight possible system trade-offs are discussed. The differences in system and environmental parameters in different military scenarios are pointed o... View full abstract»

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  • Command and control - Problems and concerns

    Publication Year: 1980, Page(s):7 - 11
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    First Page of the Article
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  • System theoretic challenges and research opportunities in military C3 systems

    Publication Year: 1980, Page(s):12 - 16
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    The purpose of this paper is to discuss, in an informal way, some of the challenging research opportunities that arise in the analysis and synthesis of Command, Control, and Communications (C3) systems. It is concluded that significant advances in the theory of distributed decision theory under dynamic uncertainty are necessary to properly understand and synthesize complex military C3 systems, and... View full abstract»

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  • Newton's method and the goldstein step length rule for constrained minimization

    Publication Year: 1980, Page(s):17 - 22
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    A relaxed form of Newton's method is analyzed for the problem, min??F, with ?? a convex subset of a real Banach space X, and F:X ?? R1 twice differentiable in Fr??chet's sense. Feasible directions are obtained by minimizing local quadratic approximations Q to F, and step lengths are determined by Goldstein's rule. The results established here yield two significant extensions of an earlier theorem ... View full abstract»

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  • On the solution of singular value inequalities over a continuum of frequencies

    Publication Year: 1980, Page(s):23 - 28
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (426 KB)

    We present an algorithm for solving singular value inequalities over a continuum of frequencies. The algorithm is in two parts: a master algorithm which constructs an infinite sequence of finite sets of inequalities and a nondifferentiable optimization subalgorithm which solves these finite sets of inequalities. View full abstract»

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  • Ill-posed deconvolutions: Regularization and singular value decompositions

    Publication Year: 1980, Page(s):29 - 35
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (773 KB)

    We consider 3 procedures that have been proposed and used on the following type of ill-posed problems: Given an experimentally-measured function g, compute f knowing that g(t) = ??0 1 K(t-s)f(s)ds. The 3 procedures are (1) singular value decomposition with truncation; (2) a decomposition procedure of Ekstrom and Rhoads; and (3) the Tikhonov regularization procedure. Relationships between these 3 p... View full abstract»

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  • A cut map algorithm for design problems with parameter tolerances

    Publication Year: 1980, Page(s):36 - 38
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (204 KB)

    The design problem of choosing a set of parameters so that inequality constraints are satisfied for a specified variation of parameter values about their nominal value, is considered. Such problems occur when systems must be synthesized from components whose values are only known to a certain tolerance. Simple algorithms exist for such problems when the constraints are convex. This paper presents ... View full abstract»

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  • Efficient multivariable frequency response computations

    Publication Year: 1980, Page(s):39 - 41
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (177 KB)

    An efficient algorithm is presented for the reliable computation of frequency response matrices of the form P(j??l-A)-1Q. Efficiency is achieved through an initial reduction of A to upper Hessenberg form H so that (j??l-H) remains upper Hessenberg as ?? is varied over a desired range. Linear systems with upper Hessenberg coefficient matrices can then be solved easily and accurately. View full abstract»

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  • A tree classification of algorithms for Toeplitz and related equations including generalized Levinson and doubling type algoritms

    Publication Year: 1980, Page(s):42 - 46
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    A survey of several methods for matrix inversion currently used in linear estimation is presented. The algorithms considered belong to two classes: order recursive and function recursive. For each class a tree representation of the performed operations helps in classifying the various algorithms. Novel stochastic derivations and interpretations of the update equations are introduced that provide n... View full abstract»

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  • A gradient search algorithm for set covering problems

    Publication Year: 1980, Page(s):47 - 48
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (144 KB)

    A numerical algorithm is presented to solve set covering problems using gradient search technique. The method involves a valley seeking point scanning over the polyhedra formed by the constraint hyper surfaces. The concept is illustrated through experimental results. View full abstract»

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  • Nonlinear complementarity problems in a function space

    Publication Year: 1980, Page(s):49 - 50
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (156 KB)

    A class of nonlinear complementarity problems defined by compact operators is considered in the space of continuous functions on a compact Hausdorff space, and an existence theorem is established. The method of proof is based on Schauder's fixed-point theorem. Related topics such as a least element and indifferent opimization problems are also discussed. View full abstract»

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  • Some approximation methods in nonlinear filtering

    Publication Year: 1980, Page(s):51 - 56
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (390 KB)

    Several approximation techniques which have been developed in scattering theory are adapted to the treatment of a nonlinear filtering problem involving weak parametric noise. Formal asymptotic expansions are presented for certain averages of the un-normalized conditional density of the signal conditioned on the parametric noise and the observations. These are validated by an analysis of the associ... View full abstract»

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  • Ito, stratonovich and other limits

    Publication Year: 1980, Page(s):57 - 61
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    The Wong-Zakai approximation theorem is valid when a specific sequence is chosen to approximate the white noises. By taking other sequences, one can obtain different limits. We study the class of these limits. View full abstract»

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  • A class of infinite dimensional filters

    Publication Year: 1980, Page(s):62 - 65
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (197 KB)

    First Page of the Article
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  • On the relationship between lie algebras and nonlinear estimation

    Publication Year: 1980, Page(s):66 - 71
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (490 KB)

    A Lie algebra L(??) can be associated with each nonlinear filtering problem, and the realizability of L(??) or quotients of L(??) with vector fields on a finite dimensional manifold is related to the existence of finite dimensional recursive filters. In this paper the structure and realizability properties of L(??) are analyzed for several interesting classes of problems. It is shown that, for cer... View full abstract»

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  • Group invariance methods in nonlinear filtering of diffusion processes

    Publication Year: 1980, Page(s):72 - 79
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (630 KB)

    Given two "nonlinear filtering problems" described by the processes dx (t)i = fi (xi(t)) dt+gi (xi(t))dwi(t) i=1,2, dx (t)i = hi (xi(t)) dt+dvi(t), we define a notion of strong equivalence relating the solutions to the corresponding Mortensen-Zakai equations dui (t,x) = Lui i(t,x)dt + Li iui (t,x)dyt i, i=1,2, which allows solution of one problem to be obtained easily from solutions of the other. ... View full abstract»

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  • The ergodic theory of chaotic feedback systems

    Publication Year: 1980, Page(s):80 - 82
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  • A viable suboptimal controller for robotic manipulators

    Publication Year: 1980, Page(s):83 - 87
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (267 KB)

    A simple algebraic solution is obtained to an optimal control problem in joint space for a general robotic manipulator. Open loop and closed loop control laws are obtained. The resulting control algorithm is similar in form to a commonly used heuristic controller using cubic polynomial trajectories. View full abstract»

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  • Manipulator compliance based on joint torque control

    Publication Year: 1980, Page(s):88 - 94
    Cited by:  Papers (49)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (817 KB)

    The application of robot manipulators to batch manufacturing product assembly requires the control and monitoring of both robot force and position. A good force sensing technique is imperative to increase the robot's capabilities in this area. A fast reliable force servo system based on the proper sensing technique is also needed to increase the speed of robot operations. This paper analyzes curre... View full abstract»

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  • Active stiffness control of a manipulator in cartesian coordinates

    Publication Year: 1980, Page(s):95 - 100
    Cited by:  Papers (379)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (661 KB)

    A method of actively controlling the apparent stiffness of a manipulator end effecter is presented. The approach allows the programmer to specify the three transnational and three rotational stiffness of a frame located arbitrarily in hand coordinates. Control of the nominal position of the hand then permits simultaneous position and force control. Stiffness may be changed under program control to... View full abstract»

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  • On linguistic decision making devices

    Publication Year: 1980, Page(s):101 - 106
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (339 KB)

    This paper describes the development of a new, hierarchical, linguistic based, learning control structure for Complex systems. The complete system will be able to interact with a human operator in a limited natural language at the highest level of the hierarchy, but will be able to control detailed motions of some complex physical system at the lowest level of the hierarchy. Each level of the hier... View full abstract»

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  • Application of nonlinear, disturbance-accommodating controllers in power plant control system design

    Publication Year: 1980, Page(s):107 - 112
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (606 KB)

    A controller for a power plant feedwater system incorporating 49 different modes of control is described. A nonlinear observer which contains both continuous and Boolean variables is used in the design. The Boolean variables are included so that process structure changes, such as pumps being taken off-line and valves failing locked, may be handled. View full abstract»

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  • Current applications of optimal estimation and control theory to the LOFT reactor plant

    Publication Year: 1980, Page(s):113 - 120
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (662 KB)

    Two advanced estimation and control systems being developed for the LOFT reactor plant are described and evaluated. The advanced protection system, based on a Kalman filter estimator is capable of providing on-line estimates of such critical variables as fuel and cladding temperature, DNBR, and LHGR. The steam generator LQG control system provides stable, closed-loop, zero steady state error contr... View full abstract»

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