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Automatic Control, IEEE Transactions on

Issue 7 • Date July 2000

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Displaying Results 1 - 25 of 27
  • Comments on "Bounded real criteria for linear time-delay systems"

    Publication Year: 2000 , Page(s): 1409 - 1411
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (89 KB)  

    Xiefu Jiang et al. point out some some misleading statements in the above mentioned paper (Shaked et al., 1998) and relation results are given. Also Wen-Shyong Yu points out serious mistakes in the same paper and also untenable main results. View full abstract»

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  • Chain-scattering approach to H/spl infin/ control [Book Review]

    Publication Year: 2000 , Page(s): 1412 - 1413
    Save to Project icon | Request Permissions | PDF file iconPDF (29 KB)  
    Freely Available from IEEE
  • Corrections to random iterative models [Book Review]

    Publication Year: 2000 , Page(s): 1414
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | PDF file iconPDF (4 KB)  
    Freely Available from IEEE
  • A dual method for parameter identification under deterministic uncertainty

    Publication Year: 2000 , Page(s): 1341 - 1346
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (284 KB)  

    Proposes a numerical method for reduction of a priori bounds on the values of uncertain plant parameters. The method successively eliminates parts of the parameter domain which are inconsistent with the plant measurement. The size of the eliminated parts is determined by a measure of inconsistency evaluated with the help of the support functions of the set of feasible states and of the set of poss... View full abstract»

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  • On an optimal control problem of train operation

    Publication Year: 2000 , Page(s): 1257 - 1266
    Cited by:  Papers (72)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (412 KB)  

    This paper examines the operation of a train on a variable grade profile subject to arbitrary speed restrictions. The purpose of the study is to determine a detailed program for traction and brake applications, which minimizes energy consumption in moving the train along a given route for a given time. Stated in the form of optimal control, this problem is solved by constructing a numerical algori... View full abstract»

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  • Robust tracking: relation between the numerators, mode readability, and inverse internal model

    Publication Year: 2000 , Page(s): 1401 - 1405
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (176 KB)  

    In the robust, multivariable, asymptotic tracking problem with two-output plants, it is shown that if the numerator related to the controlled output is fixed, while the other numerator and the denominator are perturbed, then there is no solution to the problem. If, however, the whole part of the plant related to the controlled output is stable and fixed, while the other part is arbitrarily perturb... View full abstract»

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  • Successive method for general multiple linear-quadratic control problem in discrete time

    Publication Year: 2000 , Page(s): 1380 - 1385
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (272 KB)  

    A successive method is proposed for the general multiple linear-quadratic control problem in discrete time. A family of auxiliary parametric linear-quadratic control problems is constructed such that its solution sequence converges to the optimal solution of the original problem. Theoretical analysis for the computational procedure and global convergence of the successive method is provided. The s... View full abstract»

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  • Logical control of an elevator with defeasible logic

    Publication Year: 2000 , Page(s): 1347 - 1349
    Cited by:  Papers (8)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (60 KB)  

    The elevator control program of Dyck and Caines (1995) can be implemented more concisely in d-Prolog, a defeasible logic programming system developed by Nute (1992, 1996, 1997). To demonstrate this, the program is recast, first into ordinary Prolog and then into d-Prolog. In defeasible logic, more specific rules take precedence over more general ones. Thus, the d-Prolog programmer can state genera... View full abstract»

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  • Robustness of discrete periodically time-varying control under LTI unstructured perturbations

    Publication Year: 2000 , Page(s): 1370 - 1374
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (248 KB)  

    Investigates robustness of linear periodically time varying (LPTV) control of discrete linear time invariant (LTI) plants subject to LTI unstructured perturbations. The note first derives a necessary and sufficient condition for robust stability of an LPTV system subject to LTI perturbations, which is less conservative than the well known small gain condition. It then presents a quantitative analy... View full abstract»

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  • On the linearization via a restricted class of dynamic feedback

    Publication Year: 2000 , Page(s): 1385 - 1391
    Cited by:  Papers (8)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (308 KB)  

    We deal with the problem of linearization of nonlinear systems using a restricted class of dynamic compensator which is composed of chains of integrators, followed by static feedback in the vector field formulation. We present an upper bound on the number of integrators to linearize nonlinear systems, and show that the bound is sharp when n-2⩾m⩾2. This results in the checkable necessary an... View full abstract»

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  • Properties of a combined adaptive/second-order sliding mode control algorithm for some classes of uncertain nonlinear systems

    Publication Year: 2000 , Page(s): 1334 - 1341
    Cited by:  Papers (35)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (308 KB)  

    In this paper, a combined adaptive/variable structure control approach is presented that exploits the good properties of the backstepping procedure and of a second-order sliding-mode control algorithm. This algorithm enables one to attain the conditions S=0, S˙=0 (second-order sliding mode) in a finite time, S=0 being a predefined sliding manifold. The combined approach retains the stability a... View full abstract»

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  • Sufficient conditions for almost sure stability of jump linear systems

    Publication Year: 2000 , Page(s): 1325 - 1329
    Cited by:  Papers (8)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (220 KB)  

    This paper derives less conservative conditions for almost-sure stability of jump linear systems by using the stochastic version of Lyapunov's second method. To ensure the required stability, the Lyapunov function is only required to be nonincreasing along each of the specially organized subsequences of “jumgings”. This allows one to handle the case where some or even all subsystems ar... View full abstract»

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  • Robust H-compensator design for time-delay systems with norm-bounded time-varying uncertainties

    Publication Year: 2000 , Page(s): 1363 - 1369
    Cited by:  Papers (11)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (276 KB)  

    Considers robust H-compensator design for linear systems that involve unknown time delays both in states and controls and time-varying norm-bounded parameter uncertainties. Sufficient conditions for designing robust compensators are obtained in terms of two Riccati inequalities which are not mutually coupled, through which a full-order robust H-compensator can b... View full abstract»

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  • Persistent identification of systems with unmodeled dynamics and exogenous disturbances

    Publication Year: 2000 , Page(s): 1246 - 1256
    Cited by:  Papers (18)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (660 KB)  

    In this paper, a novel framework of system identification is introduced to capture the hybrid features of systems subject to both deterministic unmodeled dynamics and stochastic observation disturbances. Using the concepts of persistent identification, control-oriented system modeling and stochastic analysis, we investigate the central issues of irreducible identification errors and time complexit... View full abstract»

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  • H state feedback control for discrete singular systems

    Publication Year: 2000 , Page(s): 1405 - 1409
    Cited by:  Papers (61)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (176 KB)  

    Deals with the problem of state feedback H control for discrete singular systems. It is not assumed that the singular system under consideration is necessarily regular. The problem we address is the design of a state feedback controller, such that the resulting closed-loop system is not only regular, causal, and stable, but also satisfies a prescribed H-norm-bou... View full abstract»

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  • On stabilizing receding horizon controls for linear continuous time-invariant systems

    Publication Year: 2000 , Page(s): 1329 - 1334
    Cited by:  Papers (14)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (216 KB)  

    In this paper, new matrix inequality conditions on the terminal weighting matrices are proposed for linear continuous time-invariant systems under which nonincreasing or nondecreasing monotonicities of the optimal cost are guaranteed. It is shown that the proposed terminal inequality conditions guarantee the closed-loop stability of the receding horizon control with additional conditions of observ... View full abstract»

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  • Quantized feedback stabilization of linear systems

    Publication Year: 2000 , Page(s): 1279 - 1289
    Cited by:  Papers (491)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (600 KB)  

    This paper addresses feedback stabilization problems for linear time-invariant control systems with saturating quantized measurements. We propose a new control design methodology, which relies on the possibility of changing the sensitivity of the quantizer while the system evolves. The equation that describes the evolution of the sensitivity with time (discrete rather than continuous in most cases... View full abstract»

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  • Reduced-order model feedback control design: numerical implementation in a thin shell model

    Publication Year: 2000 , Page(s): 1312 - 1324
    Cited by:  Papers (24)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (676 KB)  

    Reduced-order models employing the Lagrange and popular proper orthogonal decomposition (POD) reduced-basis methods in numerical approximation and feedback control of systems are presented and numerically tested. The system under consideration is a thin cylindrical shell with surface-mounted piezoceramic actuators. Donnell-Mushtari equations, modified to include Kelvin-Voigt damping, are used to m... View full abstract»

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  • On the optimal unbiased functional filtering

    Publication Year: 2000 , Page(s): 1374 - 1379
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (208 KB)  

    Presents a simple solution to the optimal unbiased reduced-order (or functional) filtering problem for linear time-varying systems. Necessary and sufficient conditions for the existence of the obtained filter are given. Stability and convergence conditions are developed for the time-invariant systems. Both continuous- and discrete-time cases are considered View full abstract»

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  • Periodic Riccati difference equations: approaching equilibria by implicit systems

    Publication Year: 2000 , Page(s): 1391 - 1396
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (308 KB)  

    A parameterization of solutions to the periodic Riccati difference equation (RDE) is given. By using behavioral tools the moving equilibria of the periodic RDE are encompassed among the trajectories of the implicit AR model associated to the symplectic pencil of the corresponding Hamiltonian equations. This allows a parameterization of solutions of periodic RDEs even in the case the dynamic matrix... View full abstract»

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  • Identification of Riccati dynamics under perspective and orthographic observations

    Publication Year: 2000 , Page(s): 1267 - 1278
    Cited by:  Papers (28)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (540 KB)  

    The problem of identifying motion and shape parameters of a planar object undergoing a Riccati motion, from the associated optical flow generated on the image plane of a single CCD camera, is studied. The optical flow is generated by projecting feature points on the object onto the image plane via perspective and orthographic projections. An important result we show is that, under perspective proj... View full abstract»

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  • Robustification of backstepping against input unmodeled dynamics

    Publication Year: 2000 , Page(s): 1358 - 1363
    Cited by:  Papers (12)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (244 KB)  

    We present two redesigns to robustify backstepping control laws against dynamic uncertainties in the input of the plant. In the first redesign we construct a passivating control law from a control Lyapunov function obtained by backstepping. The second redesign is a simplification of the first, useful for high-order systems. We also compare the stability margins of the two main versions of backstep... View full abstract»

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  • Robust adaptive regulation of linear time-varying systems

    Publication Year: 2000 , Page(s): 1301 - 1311
    Cited by:  Papers (17)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (736 KB)  

    Given reference signals generated by a stable, linear time-invariant exosystem, to be tracked by the output, the problem of robust adaptive regulation by output feedback is addressed for single-input, single-output linear systems with unknown time-varying parameters and unmodeled bounded additive disturbances. Without requiring parameters or disturbances to be slowly varying or to have known bound... View full abstract»

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  • Nash equilibria in risk-sensitive dynamic games

    Publication Year: 2000 , Page(s): 1397 - 1401
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (232 KB)  

    Dynamic games in which each player has an exponential cost criterion are referred to as risk-sensitive dynamic games. In this note, Nash equilibria are considered for such games. Feedback risk-sensitive Nash equilibrium solutions are derived for two-person discrete time linear-quadratic nonzero-sum games, both under complete state observation and shared partial observation View full abstract»

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  • Input-output modeling of nonlinear systems with time-varying linear models

    Publication Year: 2000 , Page(s): 1355 - 1358
    Cited by:  Papers (18)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (124 KB)  

    Time varying ARMA (autoregressive moving average) and ARMAX (autoregressive moving average with exogenous inputs) models are proposed for input-output modeling of nonlinear deterministic and stochastic systems. The coefficients of these models are estimated by a random walk Kalman filter (RWKF). This method requires no prior assumption on the nature of the model coefficients, and is suitable for r... 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