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  • Conference paper
    Casagrande D, Astolfi A, Parisini T, 2008,

    Stabilization of a Class of Non-holonomic Systems by Means of Switching Control Laws

    , 47th IEEE Conference on Decision and Control, Publisher: IEEE, Pages: 777-782, ISSN: 0191-2216
  • Conference paper
    Astolfi A, Ortega R, 2008,

    Interconnection and Damping Assignment Passivity-Based Control: Static vs Dynamic State-Feedback

    , 47th IEEE Conference on Decision and Control, Publisher: IEEE, Pages: 1674-1677, ISSN: 0191-2216
  • Conference paper
    Angeli D, 2008,

    On modularity and persistence of chemical reaction networks

    , 47th IEEE Conference on Decision and Control, Publisher: IEEE, Pages: 13-18, ISSN: 0191-2216
  • Book
    Astolfi A, Marconi L, 2008,

    Analysis and Design of Nonlinear Control Systems. In Honor of Alberto Isidori (A. Astolfi and L. Marconi, Eds)

    , Publisher: Springer-Verlag, ISBN: 978-3-540-74357-6
  • Journal article
    Colaneri P, Geromel JC, Astolfi A, 2008,

    Stabilization of continuous-time switched nonlinear systems

    , Systems & Control Letters, Vol: 57, Pages: 95-103
  • Book
    Astolfi A, Karagiannis D, Ortega R, 2008,

    Nonlinear and Adaptive Control with Applications

    , Publisher: Communications and Control Engineering, Springer, ISBN: 978-1-84800-065-0
  • Journal article
    Jabr RA, Pal BC, 2008,

    AC Network State Estimation Using Linear Measurement Functions

    , IET Journal Generation, Transmission and Distribution, Vol: 2, Pages: 1-6

    The real/reactive power and current magnitude measurements can be accounted for in an AC network state estimator using linear measurement functions. The nonlinearity in the conventional AC state estimator equations is transferred from the measurement functions into a system of nonlinear equality constraints which is independent of the measurement set. The new format of equations entails two advantages. First, it can be easily integrated in optimisation routines which employ first- and second-order derivative functions. Second, the linear measurement functions can benefit from scaling techniques which are well documented in the linear programming literature. This research details the implementation of a least absolute value state estimator employing the new format of equations. The optimisation method is based on a primal-dual interior-point method that can accurately account for zero injection measurements and power directions. Numerical testing is used to validate the approach for networks with measurement sets that are (i) conventional and (ii) have a high proportion of current magnitude measurements and power signs.
  • Journal article
    Liu X, Hui SYR, 2008,

    Optimal Design of a Hybrid Winding Structure for Planar Contactless Battery Charging Platform

    , IEEE Transactions on Power Electronics, Vol: 23, Pages: 455-463
  • Journal article
    Skea J, Anderson D, Green T, Gross R, Heptonstall P, Leach Met al., 2008,

    Intermittent renewable generation and maintaining power system reliability

    , Generation, Transmission & Distribution, Vol: 2, Pages: 82-89, ISSN: 1751-8687

    There have been attempts, using various approaches, to assess the additional cost of running an electricity system when intermittent renewable generation is used to provide a significant proportion of the energy. The key issues are the difference, in statistical terms, between the resource availability of the intermittent source and conventional generation and the contribution the intermittent source can make to meet the system peak demand while maintaining system reliability. There is considerable agreement over the capacity credits that can be attributed to renewable energy sources, that is the amount of conventional capacity that renewables can reliablydisplace, yet the implications for costs have proved more controversial. Approaches to calculate changes in overall system cost are examined and an expression for the additional cost that intermittent generation imposes on a system that is attributable to its intermittent nature is identified. Further, it is shown that this expression can be reconciled with approaches that look at intermittent renewables on a stand-alone basis and factor in the additional costs of ‘standby’ capacity. It is shown that the main source of divergence between estimates of the cost of intermittency is the load factor implicitly assumed for the conventional plant used as a reference. There is only one consistent way to impute the costs of intermittency when the unit cost of intermittent plant is being compared with that of baseload generation plant.
  • Journal article
    Mazars E, Jaimoukha IM, Li Z, 2008,

    Computation of a reference model for robust fault detection and isolation residual generation

    , Journal of Control Science and Engineering, Vol: 2008, Pages: 1-12, ISSN: 1687-5249

    This paper considers matrix inequality procedures to address the robust fault detection and isolation (FDI) problem for linear time-invariant systems subject to disturbances, faults, and polytopic or norm-bounded uncertainties.We propose a design procedure for an FDI filter that aims to minimize a weighted combination of the sensitivity of the residual signal to disturbances and modeling errors, and the deviation of the faults to residual dynamics from a fault to residual reference model, using the H∞-norm as a measure. A key step in our procedure is the design of an optimal fault reference model. We show that the optimal design requires the solution of a quadratic matrix inequality (QMI) optimization problem. Since the solution of the optimal problem is intractable, we propose a linearization technique to derive a numerically tractable suboptimal design procedure that requires the solution of a linear matrix inequality (LMI) optimization. A jet engine example is employed to demonstrate the effectiveness of the proposed approach.
  • Conference paper
    Mei F, Pal BC, 2008,

    Modelling of doubly-fed induction generator for power system stability study

    , General Meeting of the IEEE-Power-and-Energy-Society, Publisher: IEEE, Pages: 287-294, ISSN: 1944-9925
  • Conference paper
    Toh TT, Mitcheson PD, Yeatman EM, 2008,

    Continuously Rotating Energy Harvester with Improved Power Density

    , PowerMEMS 2008, Pages: 221-224
  • Journal article
    Back J, Astolfi A, 2008,

    Design of positive linear observers for positive linear systems via coordinate transformations and positive realizations

    , SIAM JOURNAL ON CONTROL AND OPTIMIZATION, Vol: 47, Pages: 345-373, ISSN: 0363-0129
  • Conference paper
    Soto D, Pena R, Wheeler P, Green TCet al., 2008,

    Regulation of the Capacitor Voltages in a Direct-like Cascade AC-AC Converter for FACTS Controllers

    , 39th IEEE Power Electronics Specialists Conference (PESC 08), Publisher: IEEE, Pages: 4110-+, ISSN: 0275-9306
  • Conference paper
    Costa EF, Astolfi A, 2008,

    On the stability of the recursive Kalman filter for linear time-invariant systems

    , American Control Conference 2008, Publisher: IEEE, Pages: 1286-1291, ISSN: 0743-1619
  • Conference paper
    Fu L, Pal BC, Cory BJ, 2008,

    Phasor Measurement Application for Power System Voltage Stability Monitoring

    , General Meeting of the IEEE-Power-and-Energy-Society, Publisher: IEEE, Pages: 4953-4960, ISSN: 1944-9925
  • Journal article
    Costa EF, Astolfi A, 2008,

    PARTIAL STABILITY FOR A CLASS OF NONLINEAR SYSTEMS

    , SIAM J CONTROL OPTIM, Vol: 47, Pages: 3203-3219, ISSN: 0363-0129
  • Journal article
    Frangos M, Jaimoukha IM, 2008,

    Adaptive rational interpolation: Arnoldi and Lanczos-like equations

    , European Journal of Control, Vol: 14, Pages: 342-354
  • Conference paper
    Tan CW, Green TC, Hernandez-Aramburo CA, 2008,

    Analysis of Perturb and Observe Maximum Power Point Tracking Algorithm for Photovoltaic Applications

    , 2nd International Power and Energy Conference (PECon 2008), Publisher: IEEE, Pages: 237-+
  • Conference paper
    Lopes AR, Constantinides GA, Kerrigan EC, 2008,

    A Floating-Point Solver for Band Structured Linear Equations

    , Pages: 353-356
  • Conference paper
    Singh R, Pal BC, Jabr RA, Lang PDet al., 2008,

    Distribution System Load Flow Using Primal Dual Interior Point Method

    , Joint International Conference on Power Systems Technology (POWERCON)/IEEE Power India Conference, Publisher: IEEE, Pages: 1404-+
  • Journal article
    Chang H, Astolfi A, 2008,

    Control of the transition to long-term nonprogressor in tristable HIV dynamics.

    , Annu Int Conf IEEE Eng Med Biol Soc, Vol: 2008, Pages: 4940-4944, ISSN: 2375-7477

    The human immunodeficiency virus (HIV) infection, that causes acquired immune deficiency syndrome (AIDS), is a dynamic process that can be modeled via differential equations. In this paper we apply a control strategy to boost the immune response for a tristable HIV dynamic model. The purpose of this control method is to steer the system to an equilibrium condition known as long-term nonprogressor, which corresponds to an infected patient that does not develop the symptoms of AIDS. The control strategy is implemented by controlled drug scheduling based on the understanding of the immune boosting mechanism. The feasibility of the methodology is illustrated via simulations.
  • Conference paper
    Chang H, Astolfi A, 2008,

    Control of the Transition to Long-Term Nonprogressor in Tristable HIV Dynamics

    , 30th Annual International Conference of the IEEE-Engineering-in-Medicine-and-Biology-Society, Publisher: IEEE, Pages: 4940-4944, ISSN: 1557-170X
  • Journal article
    Falugi P, Olaru S, Dumur D, 2008,

    Robust multi-model predictive control using LMIs

    , IFAC Proceedings Volumes, Vol: 41, Pages: 8809-8814, ISSN: 1474-6670
  • Conference paper
    Ishikawa M, Astolfi A, 2008,

    Finite-time Control of Cross-chained Nonholomic Systems by Switched State Feedback

    , 47th IEEE Conference on Decision and Control, Publisher: IEEE, Pages: 304-309, ISSN: 0743-1546
  • Conference paper
    Carnevale D, Zaccarian L, Astolfi A, Podda Set al., 2008,

    Extremum seeking without external dithering and its application to plasma RF heating on FTU

    , 47th IEEE Conference on Decision and Control, Publisher: IEEE, Pages: 3151-3156, ISSN: 0743-1546
  • Conference paper
    Tanelli M, Gragnani A, Astolfi A, Savaresi SMet al., 2008,

    Optimising the braking performance via nonlinear analysis and bifurcation theory

    , 47th IEEE Conference on Decision and Control, Publisher: IEEE, Pages: 4396-4401, ISSN: 0743-1546
  • Conference paper
    Zhang X, Polycarpou MM, Parisini T, 2008,

    Adaptive Fault-Tolerant Control of a Class of Nonlinear MIMO Systems

    , 47th IEEE Conference on Decision and Control, Publisher: IEEE, Pages: 398-403, ISSN: 0743-1546
  • Journal article
    Hui SYR, Chung HSH, Qiu DY, 2008,

    Effective Standby Power Reduction Using Non-Dissipative Single-Sensor Method

    , 2008 IEEE POWER ELECTRONICS SPECIALISTS CONFERENCE, VOLS 1-10, Pages: 678-+, ISSN: 0275-9306
  • Journal article
    Su YP, Liu X, Hui SYR, 2008,

    Mutual Inductance Calculation of Movable Planar Coils on Parallel Surfaces

    , 2008 IEEE POWER ELECTRONICS SPECIALISTS CONFERENCE, VOLS 1-10, Pages: 3475-+, ISSN: 0275-9306
    • Cite
    • Citations: 10

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