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[1992] Proceedings of the 31st IEEE Conference on Decision and Control

1992

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  • Extensions of mixed- mu bounds to monotonic and odd monotonic nonlinearities using absolute stability theory. II

    Publication Year: 1992, Page(s):2820 - 2823
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  • H/sub infinity /-optimal estimation: a tutorial

    Publication Year: 1992, Page(s):2278 - 2286 vol.2
    Cited by:  Papers (45)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (846 KB)

    The different aspects of H/sub infinity / estimation of linear, time-varying processes are considered, in both the continuous- and the discrete-time cases. The connection with differential games is explained and the uniqueness and robustness issues are discussed. Four illustrative examples are given that demonstrate the various estimation schemes and compare the H/sub infinity / results with the c... View full abstract»

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  • A tutorial on chaos in control theory

    Publication Year: 1992, Page(s):2102 - 2106 vol.2
    Cited by:  Papers (4)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (377 KB)

    The author gives an overview of some applications of chaos theory that have been applied in control theory or areas related to control theory. Chaos and chaotic attractors are discussed. Other areas considered are the reconstruction of dynamics; the stability and stabilizability of control systems; control of chaos; and chaos in digital feedback systems.<> View full abstract»

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  • Signal estimation with a noisy saturating sensor

    Publication Year: 1992, Page(s):1234 - 1235 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (172 KB)

    Summary form only given. Many biological and man-made sensors saturate outside a relatively narrow range of input signal values. Although such sensors are clearly nonlinear, they often exhibit nearly linear response within their range of high sensitivity. The problem considered in this work is estimating a signal using noisy measurements from such a sensor. The sensor considered has a high-gain (o... View full abstract»

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  • On low-noise modeling: a summary

    Publication Year: 1992
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (56 KB)

    Summary form only given. It has been affirmed that the observability indices of the pair H,F and the corresponding linear dependences of the rows of the observability matrix provide a parametrization of all solutions of the exact (noiseless) linear modeling problem. Additional constraints such as complexity or stability can also be taken care of in this framework. In the present work, an attempt i... View full abstract»

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  • Proceedings of 1992 31st IEEE Conference on Decision and Control

    Publication Year: 1992
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    Freely Available from IEEE
  • Neural networks as on-line approximators of nonlinear systems

    Publication Year: 1992, Page(s):7 - 12 vol.1
    Cited by:  Papers (26)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (696 KB)

    The authors present an approximation theory perspective in the design and analysis of nonlinear system identification schemes using neural network and other online approximation models. The identification procedure considered is based on a discrete-time formulation. Depending on the location of the adjustable parameters, networks are classified into linearly and nonlinearly parametrized networks. ... View full abstract»

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  • Irregular sampling theory and scattered-center radial Gaussian networks

    Publication Year: 1992, Page(s):13 - 19 vol.1
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (774 KB)

    Several new theorems in network approximation theory indicate that the use of a regular lattice for the centers of a radial basis function expansion may be very conservative in certain situations. The need for a regular grid is relaxed in the present work by using irregular sampling theory to extend the Gaussian network construction procedure. In particular, it is shown that if the chosen sample p... View full abstract»

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  • Risk sensitive control with ergodic cost criteria

    Publication Year: 1992, Page(s):2048 - 2052 vol.2
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    Stochastic control problems on an infinite time horizon with exponential cost criteria are considered. The Donsker-Varadhan large deviation rate (1975, 1976) is used as a criterion to be optimized. The optimum rate is characterized as the value of an associated stochastic differential game, with an ergodic (expected average cost per unit time) cost criterion. By taking a small-noise limit a determ... View full abstract»

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  • Asymptotic performance evaluation of CSMA and CSMA/CD networks

    Publication Year: 1992, Page(s):1020 - 1021 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (278 KB)

    Analytical formulas for the performance evaluation of CSMA (carrier-sense multiple access) and CSMA/CD (collision detection) networks with a finite number of buffered users are presented. The asymptotic theory developed by J.-T. Lim and S.M. Meerkov (1987) is extended to local area networks in order to investigate the steady-state performance characteristics. In particular, the stabilization of CS... View full abstract»

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  • Identification of nonlinear systems using new dynamic neural network structures

    Publication Year: 1992, Page(s):20 - 25 vol.1
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (652 KB)

    The authors study the stability and convergence properties of recurrent high-order neural networks (RHONNs) as models of nonlinear dynamical systems. The overall structure of the RHONN consists of dynamical elements distributed throughout the network in the form of dynamical neurons, which are interconnected by high-order connections. It is shown that if a sufficiently large number of high-order c... View full abstract»

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  • Second order generalized linear systems arising in analysis of flexible beams

    Publication Year: 1992, Page(s):3514 - 3518 vol.4
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (424 KB)

    The analysis of a one-link flexible beam using a power series solution with respect to the spatial variable is discussed. The Euler-Bernoulli beam with payload mass and moment of inertia at the right end is clamped at the left end or driven by a torque applied by an actuator located at the base of the beam. The former case results in a second-order state-space equation, while the latter results in... View full abstract»

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  • The monotone follower problem

    Publication Year: 1992, Page(s):2053 - 2055 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (321 KB)

    The monotone follower problem is a stochastic control problem in which the state, a diffusion process, is controlled by a monotone nondecreasing process. For the 1-D case it has been shown that the optimal control is singular with respect to the Lebesgue measure as a function of time and is characterized by a region of inaction A and its complement, the free boundary ∂A bein... View full abstract»

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  • A self-tuning regulator for adaptive overload control in communication networks

    Publication Year: 1992, Page(s):1022 - 1023 vol.1
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (319 KB)

    The author considers overload control mechanisms that dynamically regulate the rate of data flow or call arrival into a network based on feedback information about the network state. Such mechanisms are used in a wide variety of both circuit- and packet-switched networks. The author interprets the design of these mechanisms as an adaptive feedback control problem. He uses this analog to design and... View full abstract»

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  • μ-synthesis of an electromagnetic suspension system

    Publication Year: 1992, Page(s):2574 - 2579 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (565 KB)

    The authors discuss the μ-synthesis of an electromagnetic suspension system. The issue of modeling a real physical electromagnetic suspension system is discussed. A nominal model as well as a set of models in which the real system is assumed to reside is derived. Different model structures and possible model parameter values are fully employed to determine unstructured additive plant perturbati... View full abstract»

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  • Feedback symmetrization of nonlinear systems

    Publication Year: 1992, Page(s):102 - 103 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (279 KB)

    The feedback symmetrization problem for nonlinear systems is studied. It is shown that this problem is solvable if and only if certain equations are solvable. Once the solutions of the equations are available, a feedback law which solves the problem can easily be constructed View full abstract»

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  • For neural networks, function determines form

    Publication Year: 1992, Page(s):26 - 31 vol.1
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (622 KB)

    It is proved that, generically on nets, the I/O (input-output) behavior uniquely determines the internal form, up to simple symmetries. The sets where this conclusion does not hold are thin in the sense that they are included in sets defined by algebraic equalities. It is shown that, under very weak genericity assumptions, the following is true: assume given two nets, whose neurons all have the sa... View full abstract»

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  • On adaptive control of infinite dimensional systems

    Publication Year: 1992, Page(s):3519 - 3520 vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    The problem of self-tuning control of a class of linear infinite dimensional systems is considered. A method is presented to design a stabilizing finite dimensional discrete time compensator for a known infinite dimensional system. To reduce the error in the parameter estimates due to unmodeled dynamics, an adaptive low pass filter is proposed to be used prior to the parameter estimator. Condition... View full abstract»

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  • Solving combinatorial optimization problems by gradient flows

    Publication Year: 1992, Page(s):1494 - 1496 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (271 KB)

    The relationship between certain NP-hard combinatorial optimization problems and gradient flows on the special orthogonal group is examined. It is shown that there is a correspondence between the local minima of a heuristic local search algorithm and the local minima of the gradient flow on the group View full abstract»

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  • A neurocomputing algorithm for linear state estimation

    Publication Year: 1992, Page(s):2702 - 2705 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (353 KB)

    A linearized Hopfield neural network (HNN) is used as a computing tool to solve a continuous-time linear state estimation problem. The estimation problem is treated as a dynamic optimization problem, where the objective is to find the system state that optimizes a performance measure. It is shown that, by appropriate choice of the weights of the HNN, the optimal state can be obtained as the sealed... View full abstract»

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  • A new bias partitioned square-root information filter and smoother for aircraft flight state and parameter estimation

    Publication Year: 1992, Page(s):741 - 742 vol.1
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (259 KB)

    A novel bias partitioned square-root information filter (PSRIF) with an associated partitioned square-root information smoother (PSRIS) for aircraft flight state and parameter estimation is proposed. This algorithm not only can improve the numerical robustness and precision of flight state estimation but can also make the computation more efficient than the augmented extended Kalman filter or the ... View full abstract»

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  • Covariance averaging in the analysis of uncertain systems

    Publication Year: 1992, Page(s):1842 - 1849 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (801 KB)

    To analyze the effects of parametric uncertainty in state space systems, the state covariance is averaged over the statistics of the uncertain parameters. For natural frequency uncertainty, this computation is shown to be related to the Fourier transform of the probability density function of the uncertain parameter. In the case of a single mode oscillator, the average covariance exhibits both equ... View full abstract»

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  • Ergodic control applied to car suspension design

    Publication Year: 1992, Page(s):2056 - 2061 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    Stochastic ergodic control is used to compute feedback laws for semiactive vehicle suspensions. The authors present an overview of a study supported by Renault and conducted by J. Alanoly and S. Sankar (1988). For the practical implementation, the Hamilton-Jacobi-Bellman equation can be numerically solved, which gives an approximation of the optimal law. Another possibility is to seek for the best... View full abstract»

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  • Combining forecasts using recursive equal weighting and linear programming

    Publication Year: 1992, Page(s):3705 - 3706 vol.4
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (321 KB)

    Two combining methods, called recursive equal weighting (REW) and linear programming (LP), respectively, are introduced. Their forecasting performance is compared with other combining methods. The proposed REW method not only reaches a forecasting accuracy comparable to that of the theoretically optimal combining methods, but also provides some valuable insights into the methodology of combination... View full abstract»

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  • Communication delays in connections of input/output discrete event processes

    Publication Year: 1992, Page(s):3374 - 3379 vol.4
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (638 KB)

    An input/output interpretation of supervision of discrete event systems is proposed. New concepts must be introduced in order to describe the behavior of the closed-loop system of a plant and supervisor subject to communication delays. The class of supervisors allowed under delays for the general case and for additional assumptions on the plant language are characterized View full abstract»

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