Publications

Search or filter publications

Filter by type:

Filter by publication type

Filter by year:

to

Results

  • Showing results for:
  • Reset all filters

Search results

  • Conference paper
    Ortner P, Astolfi A, 2009,

    Robust Observer Design for a Class of Nonlinear Systems using Filtering and Dynamic Scaling

    , Joint 48th IEEE Conference on Decision and Control (CDC) / 28th Chinese Control Conference (CCC), Publisher: IEEE, Pages: 6119-6124, ISSN: 0743-1546
  • Journal article
    Chang H, Astolfi A, 2009,

    Enhancement of the Immune Response to Chronic Myeloid Leukaemia via Controlled Treatment Scheduling

    , 2009 ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY, VOLS 1-20, Pages: 3889-3892, ISSN: 1557-170X
  • Journal article
    Tanelli M, Osorio G, di Bernardo M, Savaresi SM, Astolfi Aet al., 2009,

    Existence, stability and robustness analysis of limit cycles in hybrid anti-lock braking systems

    , INTERNATIONAL JOURNAL OF CONTROL, Vol: 82, Pages: 659-678, ISSN: 0020-7179
  • Journal article
    Angeli D, Bliman P-A, 2009,

    CONVERGENCE SPEED OF UNSTEADY DISTRIBUTED CONSENSUS: DECAY ESTIMATE ALONG THE SETTLING SPANNING-TREES

    , SIAM JOURNAL ON CONTROL AND OPTIMIZATION, Vol: 48, Pages: 1-32, ISSN: 0363-0129
  • Journal article
    Tan Y, Nesic D, Mareels IMY, Astolfi Aet al., 2009,

    On global extremum seeking in the presence of local extrema

    , AUTOMATICA, Vol: 45, Pages: 245-251, ISSN: 0005-1098
  • Journal article
    Li Z, Jaimoukha IM, 2009,

    Observer-based fault detection and isolation filter design for linear time-invariant systems

    , INTERNATIONAL JOURNAL OF CONTROL, Vol: 82, Pages: 171-182, ISSN: 0020-7179
  • Journal article
    Costa EF, Astolfi A, 2009,

    CHARACTERIZATION OF EXPONENTIAL DIVERGENCE OF THE KALMAN FILTER FOR TIME-VARYING SYSTEMS

    , SIAM JOURNAL ON CONTROL AND OPTIMIZATION, Vol: 48, Pages: 2917-2944, ISSN: 0363-0129
  • Conference paper
    Moreno R, Konstantinidis V, Pudjianto D, Strbac Get al., 2009,

    The New Transmission Arrangements in the UK

    , General Meeting of the IEEE-Power-and-Energy-Society, Publisher: IEEE, Pages: 2797-2803, ISSN: 1944-9925
  • Conference paper
    McDonald JDF, Pal BC, Lang PD, 2009,

    Significance of an Operational Measure of Distribution Network Reliability

    , General Meeting of the IEEE-Power-and-Energy-Society, Publisher: IEEE, Pages: 3935-3942, ISSN: 1944-9925
  • Conference paper
    Simfukwe D, Pal BC, Begovic M, Divan D, Song Yet al., 2009,

    Control of power system static stability using distributed static series compensators

    , General Meeting of the IEEE-Power-and-Energy-Society, Publisher: IEEE, Pages: 3994-3999, ISSN: 1944-9925
  • Conference paper
    Ahmadi AR, Green TC, 2009,

    Optimal Power Flow for Autonomous Regional Active Network Management System

    , General Meeting of the IEEE-Power-and-Energy-Society, Publisher: IEEE, Pages: 4536-4542, ISSN: 1944-9925
  • Conference paper
    Moreno R, Vasilakos C, Pudjianto D, Strbac Get al., 2009,

    A Cost-Benefit Approach for Transmission Investment with a Non-Linear Transmission Cost Function

    , Bucharest PowerTech Conference, Publisher: IEEE, Pages: 2387-2390
  • Conference paper
    Clarke FH, Vinter RB, 2009,

    Stability analysis of sliding-mode feedback control

    , Conference on 50 Years of Optimal Control, Publisher: POLISH ACAD SCIENCES SYSTEMS RESEARCH INST, Pages: 1169-1192, ISSN: 0324-8569
  • Conference paper
    Moreno R, Vasilakos C, Castro M, Pudjianto D, Strbac Get al., 2009,

    Impact of Wind Generation Intermittency on Transmission Expansion Models

    , CIGRE/IEEE PES Joint Symposium on Integration of Wide-Scale Renewable Resources into the Power Delivery System, Publisher: IEEE, Pages: 110-116
  • Conference paper
    Pezzini P, Gomis-Bellmunt O, Gonzalez-de-Miguel C, Junyent-Ferre A, Sudria-Andreu Aet al., 2009,

    FACTS location using Genetic Algorithm to increase energy efficiency in distribution networks

    , 13th European Conference on Power Electronics and Applications (EPE 2009), Publisher: IEEE, Pages: 1308-1315
  • Conference paper
    Gomis-Bellmunt O, Junyent-Ferre A, Sumper A, Sudria-Andreu A, Mata M, Sala Met al., 2009,

    Control of a doubly-fed induction generator under unbalanced conditions considering the converter limits

    , 13th European Conference on Power Electronics and Applications (EPE 2009), Publisher: IEEE, Pages: 1718-+
  • Journal article
    Jabr RA, Pal BC, 2009,

    Intermittent Wind Generation in Optimal Power Flow Dispatching

    , IET Generation, Transmision and Distribution, Vol: 3, Pages: 66-74
  • Journal article
    Angeli D, Sontag ED, 2009,

    Oscillations in I/O Monotone Systems Under Negative Feedback

    , IEEE T AUTOMAT CONTR, Pages: 166-176, ISSN: 0018-9286

    Oscillatory behavior is a key property of many biological systems. The small-gain theorem (SGT) for input/output monotone systems provides a sufficient condition for global asymptotic stability of an equilibrium, and hence its violation is a necessary condition for the existence of periodic solutions. One advantage of the use of the monotone SGT technique is its robustness with respect to all perturbations that preserve monotonicity and stability properties of a very low-dimensional (in many interesting examples, just one-dimensional) model reduction. This robustness makes the technique useful in the analysis of molecular biological models in which there is large uncertainty regarding the values of kinetic and other parameters. However, verifying the conditions needed in order to apply the SGT is not always easy. This paper provides an approach to the verification of the needed properties and illustrates the approach through an application to a classical model of circadian oscillations, as a nontrivial "case study," and provides a theorem in the converse direction of predicting oscillations when the SGT conditions fail.
  • Conference paper
    Lopes AR, Shahzad A, Constantinides GA, Kerrigan ECet al., 2009,

    More FLOPS or More Precision? Accuracy Parameterizable Linear Equations Solvers for Model-Predictive Control
  • Conference paper
    He C, Arora A, Kiziroglou ME, Yates DC, O'Hare D, Yeatman EMet al., 2009,

    MEMS Energy Harvesting Powered Wireless Biometric Sensor

    , Wearable and Implantable Body Sensor Networks, 2009. BSN 2009. Sixth International Workshop on, Pages: 207-212

    One of the main challenges in developing wireless biometric sensors is the requirement for integration of various systems into a very compact device. Such systems include sensing units, conditioning electronics, transmitters and power supplies. In this work, a novel system integration architecture is presented. A unique feature of this new architecture is that the sub-systems are selected and designed for direct output-to-input connection. An array of active pH sensors is used to transform a pH level to an electrical potential in the range of 0 - 2 Volts. This signal is amplified by an electrostatic energy harvester suitable for human motion operation. The amplified signal drives a custom LC transmitter specially designed to suit the harvester output. A system of notable simplicity is achieved and may serve as a demonstrator for other wireless sensors.
  • Conference paper
    Laila DS, Larsson M, Pal BC, Korba Pet al., 2009,

    Nonlinear damping computation and envelope detection using Hilbert transform and its application to power systems wide area monitoring

    , 2009 IEEE Power and Energy Society General Meeting
  • Conference paper
    Dicken J, Mitcheson PD, Stoianov I, Yeatman EMet al., 2009,

    Increased Power Output from Piezoelectric Energy Harvesters by Pre-Biasing

    , PowerMEMS 2009, Pages: 75-78, ISSN: 2151-3155

    This paper presents, for the first time, experimental results demonstrating a new approach to increasing the power output of piezoelectric energy harvesters by applying a bias charge at the beginning of each half cycle of motion. Ultimate power limits of inertial energy harvesters depend only on the device size and nature of the excitation, rather than on the transduction mechanism. However, practical devices generally perform well below the theoretical limit, often because a sufficiently high transducer damping force cannot be achieved. For suchcases, we show that the generator effectiveness is improved by a pre-biasing technique, and present simulationresults with experimental verification. These results show that the effectiveness of the piezoelectric generator isimproved by more than 10 times compared to an optimised purely resistive load. In practice our gains were limited by the voltage breakdown of the components used.
  • Conference paper
    Zhang Z, Jaimoukha IM, 2009,

    Fault detection and isolation for linear discrete-time systems using input/output measurement analysis

    , IEEE Conference on Decision and Control, Publisher: IEEE, Pages: 4908-4913, ISSN: 0191-2216

    In this work, a new approach to fault detection and isolation is proposed for linear discrete-time systems subject to faults and bounded additive disturbances using a system model, together with input/output measurements over a finite estimation horizon. We use the proposed method to compute upper and lower bounds on the faults. These bounds are the tightest possible given the system model, input/output measurements and the bounds on the initial state and disturbances. Linear programming optimization techniques are used to obtain the bounds. Moreover, a subsequent-state-estimation technique, together with an estimation horizon update procedure are given to allow the fault detection and isolation process to be repeated in an iterative procedure. Finally, the approach is verified using a numerical example.
  • Conference paper
    Li ZH, Zolotas A, Jaimoukha I, Grigoriadis Ket al., 2009,

    Integrated Design of Dynamic Controller with Fault Diagnosis and Tolerance

    , MEDITERRANEAN CONFERENCE ON CONTROL & AUTOMATION, Publisher: IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA, Pages: 694-699

    Fault detection capability tends to become an integral part of control system design procedures for practical engineering systems. It is thus desirable fault diagnosis/tolerance functions to also be included in the controller design. In this context, we develop a generic observer-based feedback controller where the observer-part can also generate a residual signal for fault detection purposes. The design objectives is a mixture of H-infinity, control and H-infinity, fault detection and isolation. This multi-objective optimization problem is then formulated using Bilinear Matrix In-equalities (BMI) and a sub-optimal solution is achieved via transformation to Linear Matrix Inequalities (LMI). The developed approach and algorithm are verified in study of an application to a railway suspension system of ride quality maintenance.
  • Journal article
    Strbac G, 2008,

    Demand side management: Benefits and challenges

    , ENERGY POLICY, Vol: 36, Pages: 4419-4426, ISSN: 0301-4215
  • Conference paper
    Falugi P, Olaru S, Dumur D, 2008,

    Robust multi-model predictive control using LMIs

    , ISSN: 1474-6670

    This paper proposes a novel robust predictive control synthesis technique for constrained nonlinear systems based on linear matrix inequalities (LMIs) formalism. Local discrete-time polytopic models have been exploited for prediction of the system behavior. This design strategy can be applied to a wide class of nonlinear systems provided a suitable embedding is available. The devised procedure guarantees constraint satisfaction and asymptotic stability. The proposed result extends previous works by allowing different local descriptions of nonlinearity and uncertainty and by handling less conservative input constraints. The multimodel prediction shows significant improvements in terms of closed-loop performance and estimation of the feasibility domain. Copyright © 2007 International Federation of Automatic Control All Rights Reserved.
  • Conference paper
    Walton C, Green T, Woods T, 2008,

    Supergen futurenet and flexnet

    The paper outlines the work and conclusions of the four year Supergen FutureNet consortium of eight UK universities and many industrial sponsors that concluded in summer 2007. It then sets out the research program and objectives of the follow-on four year £7m FlexNet consortium and its implications for Smart Grids.
  • Conference paper
    Xu Z, Green T, 2008,

    A Singular Value Decomposition Approach to Similarity Evaluation Between Servo Loops of CNC Machine Tools

    , ASME International Mechanical Engineering Congress and Exposition, Publisher: ASME, ISSN: 1087-1357
  • Journal article
    Gomis-Bellmunt O, Junyent-Ferre A, Sumper A, Bergas-Jane Jet al., 2008,

    Ride-Through Control of a Doubly Fed Induction Generator Under Unbalanced Voltage Sags

    , IEEE TRANSACTIONS ON ENERGY CONVERSION, Vol: 23, Pages: 1036-1045, ISSN: 0885-8969
  • Journal article
    Astolfi A, Karagiannis D, Ortega R, 2008,

    Towards applied nonlinear adaptive control

    , ANNUAL REVIEWS IN CONTROL, Vol: 32, Pages: 136-148, ISSN: 1367-5788

This data is extracted from the Web of Science and reproduced under a licence from Thomson Reuters. You may not copy or re-distribute this data in whole or in part without the written consent of the Science business of Thomson Reuters.

Request URL: http://wwwtest.imperial.ac.uk:80/respub/WEB-INF/jsp/search-t4-html.jsp Request URI: /respub/WEB-INF/jsp/search-t4-html.jsp Query String: id=955&limit=30&page=40&respub-action=search.html Current Millis: 1759640221171 Current Time: Sun Oct 05 05:57:01 BST 2025