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American Control Conference, 1998. Proceedings of the 1998

Date 26-26 June 1998

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  • 1998 American Control Conference [front matter]

    Publication Year: 1998, Page(s):0_3 - 0_15
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  • Index of Authors, Speakers, Chairs and Organizers

    Publication Year: 1998, Page(s):0_16 - 0_34
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1738 KB)

    Presents an index of the authors whose papers are published in the conference. View full abstract»

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  • Parameter subset identification by recursive least squares

    Publication Year: 1998, Page(s):3590 - 3591 vol.6
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (156 KB)

    A technique for recursive least squares (RLS) identification of only a subset of parameters of a linear model is presented. Based on the decomposition of the least squares (LS) problem, an exact solution and a recursive approximation are developed. Identification of a subset of parameters is useful in adaptive control techniques based on cost function identification View full abstract»

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  • Parameter identification for an autonomous 11th order nonlinear model of a physiological process

    Publication Year: 1998, Page(s):3585 - 3589 vol.6
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (488 KB)

    This paper sets forth and illustrates some techniques for parameter identification (PId) of a nonlinear state model that approximates the dynamical behavior of the humoral immune response of a human to Haemophilus influenzae Type-b. The natural physiological time-separation of the primary, late follicular, and secondary immune responses of this biological process allows one to divide the PId probl... View full abstract»

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  • Set-valued nonlinear estimation using the Galerkin approximation

    Publication Year: 1998, Page(s):3580 - 3584 vol.6
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (380 KB)

    A set-valued state estimator for nonlinear dynamic systems is presented. The estimator uses the Galerkin approximation to solve Kolmogorov's equation for the diffusion of a continuous-time, continuous-state nonlinear system, as well as for implementing discrete time updates of noisy measurements. This filtering of the state is accomplished for a convex set of distributions simultaneously, and a fu... View full abstract»

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  • Experimental control of a cupola furnace

    Publication Year: 1998, Page(s):3816 - 3821 vol.6
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (428 KB)

    We present some final results from a research project focused on introducing automatic control to the operation of cupola iron furnaces. The main aim of this research is to improve the operational efficiency and performance of the cupola furnace. Experimental data are used to calibrate the model, which is taken as a first-order multivariable system with time delay. Then relative gain analysis is u... View full abstract»

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  • Contour tracking of machine tool feed drive systems

    Publication Year: 1998, Page(s):3833 - 3837 vol.6
    Cited by:  Papers (9)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (472 KB)

    Summarizes the current advancement in contour tracking control of machine tool feed drive systems. Contouring performance can be improved by introducing a trajectory dependent coupling effect among the feed drive axes. We summarize various approaches to synthesize these trajectory dependent cross-coupling controllers. Advancement in synthesizing linear parameter varying (LPV) controllers provided ... View full abstract»

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  • Sufficient conditions for minimality of a nonlinear realization via controllability and observability functions

    Publication Year: 1998, Page(s):3349 - 3353 vol.6
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (496 KB)

    We develop a set of sufficient conditions in terms of controllability and observability functions under which a given state space realization of a formal power series is minimal. Specifically, it is shown that positivity of these functions, plus a few technical conditions, implies minimality. In doing so, connections are established between Hamilton-Jacobi type optimal control theory and the well ... View full abstract»

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  • Robust run-to-run control for semiconductor manufacturing: an internal model control approach

    Publication Year: 1998, Page(s):3687 - 3691 vol.6
    Cited by:  Papers (9)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (528 KB)

    This paper presents the design of run to run (RtR) controllers using the internal model control (IMC) structure. In RtR control the input recipe for a run is determined using the in-situ and ex-situ measurements of past runs. RtR controllers utilizing linear response surface models are considered. The RtR controllers are designed to be robust with respect to modeling error and incorporate measurem... View full abstract»

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  • ER fluid dampers and their application in shock mitigation

    Publication Year: 1998, Page(s):3425 - 3429 vol.6
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (396 KB)

    The objective of the paper is to investigate the application of ER fluid dampers for shock protection of shipboard equipment. Several ER fluid dampers have been considered for this purpose. Dynamic models of these ER fluid dampers have been derived and important design parameters have been identified. A preliminary parametric study has been performed to compare the performance of these ER fluid da... View full abstract»

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  • Robust model predictive control of an industrial solid phase polymerizer

    Publication Year: 1998, Page(s):3386 - 3390 vol.6
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (380 KB)

    This study presents the application of model predictive control (MPC) to regulate a continuous, solid phase, industrial polymerization reactor. Polymerization is an extremely complex process which is a function of operating conditions such as, temperature, humidity, and pressure. This solid phase polymerizer is used for re-melting and re-polymerization of the solid polymer flake. PID algorithms, a... View full abstract»

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  • Controller design for linear time varying systems by backstepping

    Publication Year: 1998, Page(s):3726 - 3727 vol.6
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (136 KB)

    A new model reference adaptive control scheme based on nonlinear backstepping approach is proposed for linear time varying systems. The main idea of this design scheme is to construct a new tracking error dynamics to perform the nonlinear backstepping design. By the proper choices of the controller parameters and the intermediate control functions, the output tracking error can be made sufficientl... View full abstract»

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  • Optimal sensor configuration for complex systems

    Publication Year: 1998, Page(s):3575 - 3579 vol.6
    Cited by:  Papers (8)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (564 KB)

    The paper considers the problem of sensor configuration for complex systems with the aim of maximizing the useful information about certain quantities of interest. Our approach involves: 1) definition of an appropriate optimality criterion or performance measure; and 2) description of an efficient and practical algorithm for achieving the optimality objective. The criterion for optimal sensor conf... View full abstract»

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  • On the reheat furnace control problem

    Publication Year: 1998, Page(s):3811 - 3815 vol.6
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (376 KB)

    This paper develops a model and control algorithm for the temperature control of steel blocks (slabs) passing through a furnace burner zone. The slab temperature is controlled by varying the zone temperature. A model for a single slab passing through the furnace is developed and the parameters of this model are estimated. Data from the reheat furnace no. 2 at The Danish Steel Work Ltd. are used fo... View full abstract»

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  • On receding horizon extensions and control Lyapunov functions

    Publication Year: 1998, Page(s):3276 - 3280 vol.6
    Cited by:  Papers (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (428 KB)

    Control Lyapunov functions (CLFs) are used in conjunction with receding horizon control (RHC) to develop a new class of control schemes. In the process, strong connections between the seemingly disparate approaches are revealed, leading to a unified picture that ties together the notions of pointwise min-norm, receding horizon, and optimal control. This framework is used to develop a control Lyapu... View full abstract»

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  • Improved tracking under zero preview information for SISO systems

    Publication Year: 1998, Page(s):3332 - 3333 vol.6
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (164 KB)

    We consider the problem of continuous tracking of a reference signal assumed to be a linear combination of polynomials, exponentials and sinusoids of known frequencies. As in Jayasuria and Walgama (1993), the concept of orthogonality and the Diophantine equation are used to construct a prefilter with specified preview information. For the purposes of the paper, only the zero preview case is consid... View full abstract»

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  • A new method of flatness control in cold rolling process

    Publication Year: 1998, Page(s):3828 - 3832 vol.6
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (388 KB)

    According to practical rolling condition and the requirement of shape control, an adaptive global flatness control system is designed to realize automatic shape control of strip. The set point can be provided automatically for each actuator by a set-up model, and the adjustment of each actuator is obtained using fuzzy recognition method. The self-tuning controller with pole placement is then used ... View full abstract»

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  • State realization of nonlinear systems described by input-output difference equations

    Publication Year: 1998, Page(s):3344 - 3348 vol.6
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (472 KB)

    We consider a general class of nonlinear discrete-time systems described by their input-output relationship. We first present the necessary and sufficient conditions for existence of a local observable state-space realization of the system and an explicit algorithm for computing it. We also formulate an algorithm for extracting its minimal realization whenever possible View full abstract»

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  • Robust internal model servo control with control input saturation

    Publication Year: 1998, Page(s):3685 - 3686 vol.6
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (200 KB)

    We propose a design method of anti-windup servo control based on internal model control structure by using the idea of internal perturbed model control. We consider the reason that the error offset appears in the internal model control with control input saturation. This condition is shown by the idea of absolute stability problem View full abstract»

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  • A modified internal model control scheme with simplified design and implementation

    Publication Year: 1998, Page(s):3670 - 3671 vol.6
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (168 KB)

    A modified internal model control scheme with simplified design and implementation is proposed and shown to be effective View full abstract»

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  • A computational issue in nonlinear H control

    Publication Year: 1998, Page(s):3744 - 3745 vol.6
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (192 KB)

    Ball, Helton, and Walker (BHW, 1993) derived nonlinear H controller formulas with the assumption implying that no stable mode uncontrollable from the exogenous input. In this paper, we address the numerical difficulty encountered by BHW's controller formulas when the assumption is not satisfied. Next, we propose a modified nonlinear H controller and successfully... View full abstract»

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  • Partially decentralized controller for damping interarea oscillations in power systems

    Publication Year: 1998, Page(s):3415 - 3419 vol.6
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (436 KB)

    Frequency domain techniques for analysis and design of controllers with remote feedback signals to damp out interarea oscillations in large-scale power systems are proposed. The control of power systems may require some centralization in the near future. The main purpose of the paper is the design of a controller which is neither fully decentralized nor fully centralized, making it feasible, since... View full abstract»

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  • Nonlinear model predictive control of a batch polymerization process

    Publication Year: 1998, Page(s):3381 - 3385 vol.6
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (404 KB)

    A Newton-type nonlinear model predictive control (NMPC) algorithm is applied through a simulation study to a batch reactor for polymerization of phenol-formaldehyde resole resins. The NMPC algorithm is combined with a recursive state and parameter estimation algorithm and a nonlinear state-space model, which is used both for the estimation and the prediction. The state-space process model is devel... View full abstract»

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  • Vibrational control of underactuated mechanical systems: control design through the averaging analysis

    Publication Year: 1998, Page(s):3482 - 3486 vol.6
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (360 KB)

    An open loop vibrational control for underactuated mechanical systems with amplitude and frequency modulation is investigated. Since there is no direct external input to an unactuated joint, the dynamic coupling between the actuated and unactuated joint is utilized for controlling the unactuated joint. Feedback linearization has been performed to incorporate fully the known nonlinearities of the u... View full abstract»

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  • Optimal hold functions for MDCS sampled-data problems

    Publication Year: 1998, Page(s):3704 - 3708 vol.6
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (348 KB)

    In this paper the H2 and H sampled-data problems with mixed discrete/continuous specifications (MDCS) are considered. The hold function is not fixed a priory but rather is the design parameter. The (sub-)optimal controller obtained is of the form of a serial interconnection of a (sub-)optimal digital controller and a (sub-)optimal hold function View full abstract»

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