IEE Proceedings - Control Theory and Applications

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  • Tuning of PID controllers with fuzzy logic

    Publication Year: 2001, Page(s):1 - 8
    Cited by:  Papers (88)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (620 KB)

    The paper presents a comparison between different methods, based on fuzzy logic, for the tuning of PID controllers. Specifically considered are different control structures in which a fuzzy mechanism is adopted to improve the performances given by Ziegler-Nichols parameters. To verify the full capabilities of each controller, genetic algorithms are used to tune the parameters of the fuzzy inferenc... View full abstract»

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  • Design of PID controllers based on constrained optimisation

    Publication Year: 2002, Page(s):32 - 40
    Cited by:  Papers (45)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (746 KB)

    A new design method for PID controllers is presented, based on optimisation of load disturbance rejection with constraints on robustness to model uncertainties. The design also delivers parameters to deal with measurement noise and set-point response. Thus, the formulation of the design problem captures four essential aspects of industrial control problems, leading to a constrained optimisation pr... View full abstract»

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  • Derivative filter is an integral part of PID design

    Publication Year: 2002, Page(s):41 - 45
    Cited by:  Papers (16)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (571 KB)

    A PID controller is a second-order controller, and as such involves four parameters. However, many available tuning methods design only three parameters, and then use a default choice for the derivative filter factor. In this paper it is pointed out that for a PID controller of series form a default value for the derivative filter makes some sense, since it corresponds to a lead-lag controller. Fo... View full abstract»

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  • PID controllers: recent tuning methods and design to specification

    Publication Year: 2002, Page(s):46 - 53
    Cited by:  Papers (93)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (814 KB)

    PID control is a control strategy that has been successfully used over many years. Simplicity, robustness, a wide range of applicability and near-optimal performance are some of the reasons that have made PID control so popular in the academic and industry sectors. Recently, it has been noticed that PID controllers are often poorly tuned and some efforts have been made to systematically resolve th... View full abstract»

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  • Model predictive control of nonlinear systems: computational burden and stability

    Publication Year: 2000, Page(s):387 - 394
    Cited by:  Papers (26)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (752 KB)

    Implementation of model predictive control (MPC) or nonlinear systems requires the online solution of a nonconvex, constrained nonlinear optimisation problem. Computational delay and loss of optimality arise in the optimisation procedures. The paper presents a practical MPC scheme for nonlinear systems with guaranteed asymptotic stability. It is shown that when an initial control profile is chosen... View full abstract»

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  • Robust and optimal tuning of PI and PID controllers

    Publication Year: 2002, Page(s):17 - 25
    Cited by:  Papers (31)  |  Patents (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (763 KB)

    A general controller evaluation method based on three performance and robustness criteria is presented. It can be used to compare controllers of different structures, but also as a design method to find the optimal parameter setting for a controller of given structure. In this way optimal PI and PID controllers have been designed for a set of different plants. Clear regularities have then been not... View full abstract»

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  • Lyapunov inequality and bounded real lemma for discrete-time descriptor systems

    Publication Year: 1999, Page(s):327 - 331
    Cited by:  Papers (36)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (416 KB)

    A generalised Lyapunov inequality is described which can be reformulated as nonstrict linear matrix inequalities (LMIs), for checking the regularity, impulse immunity, and stability of discrete-time descriptor systems simultaneously. Based on this inequality, a bounded real lemma in nonstrict LMIs is obtained which characterises properties of such descriptor systems, including regularity, impulse-... View full abstract»

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  • H2 gain scheduled state feedback for LPV system with new LMI formulation

    Publication Year: 2005, Page(s):693 - 697
    Cited by:  Papers (28)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (133 KB)

    The H2 gain scheduled state feedback problem is considered by using the parameter-dependent Lyapunov function for linear parameter varying system, in which the dependent parameter is assumed to be measurable on-line in a polytope space. First, a new linear matrix inequality (LMI) representation provides a type of H2 cost computation for this system. With the introduction of the extra variable, thi... View full abstract»

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  • Estimation of parameters in a linear state space model using a Rao-Blackwellised particle filter

    Publication Year: 2004, Page(s):727 - 738
    Cited by:  Papers (18)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (701 KB)

    A Rao-Blackwellised particle filter is used in the estimation of the parameters of a linear stochastic state space model. The proposed method combines the particle filtering technique with a Kalman filter using marginalisation so as to make full use of the analytically tractable structure of the model. Simulation studies are performed on a simple illustrative example and the results demonstrate th... View full abstract»

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  • Sliding-mode control for dc-dc converters with constant switching frequency

    Publication Year: 2006, Page(s):37 - 45
    Cited by:  Papers (54)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (237 KB)

    A new approach implementing the sliding-mode controller is proposed for dc-dc converters. The equivalent control input is used as the system control input, which results in a duty cycle regulation control system. As designed, equivalent control input is maintained at a value between 0 and 1, similar to the desired duty cycle value. Thus, constant switching frequency can be achieved under changes o... View full abstract»

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  • Modified anti-windup scheme for PID controllers

    Publication Year: 2003, Page(s):49 - 54
    Cited by:  Papers (19)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (117 KB)

    An anti-windup scheme for proportional-integral-derivative controllers is presented. The approach is based on the combined use of back-calculation and conditional integration anti-windup techniques. In this way, the disadvantages that can hinder previously proposed strategies are overcome. Specifically, the method can guarantee a satisfactory performance for processes with different normalised dea... View full abstract»

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  • Swing-up control problem for a self-erecting double inverted pendulum

    Publication Year: 2002, Page(s):169 - 175
    Cited by:  Papers (17)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (778 KB)

    The paper presents a procedure to swing-up a double pendulum mounted on a cart. The aim of this problem is to take the system from its stable position to the inverted position by moving the cart. A technique to design controlled trajectories for nonlinear underactuated mechanisms is developed. The reference trajectory is obtained as a result of the optimisation of an initial trajectory defined thr... View full abstract»

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  • Inverse control of systems with hysteresis and creep

    Publication Year: 2001, Page(s):185 - 192
    Cited by:  Papers (148)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (536 KB)

    Since the beginning of the 1990s, hysteresis operators have been employed on a larger scale for the linearisation of hysteretic transducers. One reason for this is the increasing number of mechatronic applications that use solid-state actuators based on magnetostrictive or piezo-electric material or shape memory alloys. All of these actuator types show strong hysteretic effects. In addition to hys... View full abstract»

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  • System identification based on closed-loop step response data

    Publication Year: 1994, Page(s):107 - 110
    Cited by:  Papers (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (264 KB)

    This paper presents a new identification algorithm for processes operating in closed-loop. The algorithm involves fitting two Laguerre models directly to the control signal and the process output signal generated by a step change in the setpoint. The algorithm does not require any prior assumptions about the structure of the process model. The method generates an estimate of the process model in t... View full abstract»

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  • Active fault-tolerant control system against partial actuator failures

    Publication Year: 2002, Page(s):95 - 104
    Cited by:  Papers (57)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (830 KB)

    A novel approach for integrated fault detection, diagnosis and reconfigurable control systems design against actuator faults is proposed. The scheme is based on a two-stage adaptive Kalman filter for simultaneous state and fault parameter estimation, statistical decisions for fault detection, and activation of controller reconfiguration. Using the information from the fault detection and diagnosis... View full abstract»

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  • Stochastic stability of the continuous-time extended Kalman filter

    Publication Year: 2000, Page(s):45 - 52
    Cited by:  Papers (24)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (292 KB)

    The error behaviour of the extended Kalman filter is analysed. It is proved that the estimation error remains bounded if the system satisfies a detectability condition and both the initial estimation error and the disturbing noise terms are small enough. Moreover, some selected cases with both bounded and unbounded estimation error are demonstrated by numerical simulations View full abstract»

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  • Modified Smith predictor and controller for processes with time delay

    Publication Year: 1999, Page(s):359 - 366
    Cited by:  Papers (39)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (392 KB)

    A modified Smith predictor and a simple but very effective controller design procedure is proposed for time delay processes. The controller has a simple structure whose high performance particularly for unstable and integrating process is clearly shown. Design of the controllers is based on standard forms of the closed-loop system response with a variable zero and on the optimum stability approach... View full abstract»

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  • Chattering-free and fast-response sliding mode controller

    Publication Year: 1999, Page(s):171 - 177
    Cited by:  Papers (42)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (576 KB)

    A new chattering-free and fast-response sliding-mode controller with a smooth control law (SMCS) is proposed. Unlike the conventional sliding-mode controller, or sliding-mode controller with boundary layer (SMCB), which obeys the variable-structure control principle by adopting a switching control term, the proposed SMCS uses a continuously varying term instead which takes the distance of the syst... View full abstract»

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  • Design of a stable sliding-mode controller for a class of second-order underactuated systems

    Publication Year: 2004, Page(s):683 - 690
    Cited by:  Papers (78)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (296 KB)

    A stable hierarchical sliding-mode control method for a class of second-order underactuated systems is presented. The ideas behind the method are as follows. First, the underactuated system is divided into two subsystems. For each part a first-level sliding surface is defined. For these two first-level sliding surfaces, a second-level sliding surface is defined. The sliding-mode control law is der... View full abstract»

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  • Identification of continuous-time systems

    Publication Year: 2006, Page(s):185 - 220
    Cited by:  Papers (45)  |  Patents (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1052 KB)

    System identification is a well-established field. It is concerned with the determination of particular models for systems that are intended for a certain purpose such as control. Although dynamical systems encountered in the physical world are native to the continuous-time domain, system identification has been based largely on discrete-time models for a long time in the past, ignoring certain me... View full abstract»

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  • Iterative learning control for discrete-time systems with exponential rate of convergence

    Publication Year: 1996, Page(s):217 - 224
    Cited by:  Papers (85)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (724 KB)

    An algorithm for iterative learning control is proposed based on an optimisation principle used by other authors to derive gradient-type algorithms. The new algorithm is a descent algorithm and has potential benefits which include realisation in terms of Riccati feedback and feedforward components. This realisation also has the advantage of implicitly ensuring automatic step-size selection and hen... View full abstract»

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  • Analogue realisation of fractional-order integrator, differentiator and fractional PI/spl lambda/D/spl mu/ controller

    Publication Year: 2006, Page(s):714 - 720
    Cited by:  Papers (18)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (173 KB)

    The fractional-order differentiator sm, integrator s -m (0<m<1) and the fractional PIlambdaD mu controller are studied. A very simple method, useful in system and control theory, which consists of approximating, for a given frequency band, these fractional-order operators by a rational function, is presented. Simple analogue circuits that can serve... View full abstract»

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  • Nonlinear PID predictive controller

    Publication Year: 1999, Page(s):603 - 611
    Cited by:  Papers (58)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (736 KB)

    A class of nonlinear PID controllers is derived for nonlinear systems using a nonlinear generalised predictive control (NGPC) approach. First, the disturbance decoupling ability of the NGPC is discussed. For a nonlinear system where the disturbance cannot be decoupled, a nonlinear observer is designed to estimate the offset. By selecting the nonlinear gain function in the observer, it is shown tha... View full abstract»

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  • Bearings-only tracking using a set of range-parameterised extended Kalman filters

    Publication Year: 1995, Page(s):73 - 80
    Cited by:  Papers (54)  |  Patents (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (484 KB)

    Bearings-only tracking using the extended Kalman filter (EKF) configured in Cartesian and modified polar coordinate systems is reviewed. A new tracking approach is proposed which consists of a set of weighted EKFs each with a different initial range estimate and this is referred to as the range-parameterised (RP) tracker. This new approach overcomes the problems exhibited with existing EKF tracker... View full abstract»

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  • Networked control system: a brief survey

    Publication Year: 2006, Page(s):403 - 412
    Cited by:  Papers (200)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (194 KB)

    A survey on networked control systems (NCSs), published in a previous paper, is updated and extended. A simple framework and some general formulations for the study of NCSs are proposed. In addition to the survey on NCSs, the impact of NCSs on traditional large-scale system control methodologies with a related application is also reviewed. View full abstract»

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  • Dynamic sliding mode control design

    Publication Year: 2005, Page(s):392 - 396
    Cited by:  Papers (33)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (167 KB)

    Dynamic sliding mode control and higher order sliding mode are studied. Dynamic sliding mode control adds additional dynamics, which can be considered as compensators. The sliding system with compensators is an augmented system. These compensators (extra dynamics) are designed for achieving and/or improving the system stability, hence obtaining desired system behaviour and performance. Higher orde... View full abstract»

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  • LMI-based sliding-mode observer design method

    Publication Year: 2005, Page(s):113 - 115
    Cited by:  Papers (18)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (456 KB)

    In an LMI-based sliding-mode observer design method for a class of multivariable uncertain systems the switching surface is set to be the difference between the observer and system output. In terms of LMIs, a necessary and sufficient condition is derived for the existence of a sliding-mode observer guaranteeing a stable sliding motion on the switching surface that is insensitive to matched uncerta... View full abstract»

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  • Formation feedback control for multiple spacecraft via virtual structures

    Publication Year: 2004, Page(s):357 - 368
    Cited by:  Papers (71)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (368 KB)

    Formation control ideas for multiple spacecraft using the virtual structure approach are presented. If there is no formation feedback from the spacecraft to the virtual structure, the spacecraft will get out of formation when the virtual structure moves too fast for the spacecraft to track due to spacecraft control saturation or the total system must sacrifice convergence speed in order to keep th... View full abstract»

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  • Stability considerations in quaternion attitude control using discontinuous Lyapunov functions

    Publication Year: 2004, Page(s):253 - 258
    Cited by:  Papers (26)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (275 KB)

    Unit quaternions are a powerful tool for singularity free analysis and the control of arbitrary amplitude motion in a three-dimensional space. The authors present the use of proportional derivative quaternion feedback stabilisation for relative motion attitude control. Global asymptotic stability is guaranteed by defining a particular Lyapunov function and formal requirements are established. Cond... View full abstract»

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  • Power control of a photovoltaic array in a hybrid electric generation system using sliding mode techniques

    Publication Year: 2001, Page(s):448 - 455
    Cited by:  Papers (32)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (687 KB)

    A variable structure controller to regulate the output power of a standalone hybrid generation system is presented. The system comprises photovoltaic and wind generation, a storage battery bank and a variable monophasic load. The control law admits two modes of operation. The first takes place when the insolation regime is sufficient to satisfy the power demand. The second mode of operation takes ... View full abstract»

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  • Optimal tuning of PID controllers for integral and unstable processes

    Publication Year: 2001, Page(s):180 - 184
    Cited by:  Papers (32)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (340 KB)

    Tuning formulas for PID controllers applied to integral and unstable processes are presented. In particular, the controller parameters are determined, based on the process model, to minimise integral squared error performance criteria. Results have been obtained by means of genetic algorithms, in order to avoid local minima in the optimisation procedure. Both the set-point following and the load d... View full abstract»

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  • Delay-dependent stability criteria for linear systems with multiple time delays

    Publication Year: 2006, Page(s):447 - 452
    Cited by:  Papers (18)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (153 KB)

    The problem of the delay-dependent stability of linear systems with multiple time delays is discussed. A new method is first presented for a system with two time delays, in which free weighting matrices are used to express the relationships among the terms of the Leibniz-Newton formula. Next, this method is used to show the equivalence between a system with two identical time delays and a system w... View full abstract»

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  • New modified Smith predictor scheme for integrating and unstable processes with time delay

    Publication Year: 2005, Page(s):238 - 246
    Cited by:  Papers (23)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (582 KB)

    The paper extends a recently published Smith predictor scheme for controlling integrating and unstable processes with time delay, which results in a simpler control structure and improved tuning capacities for reference inputs and load disturbances. In the proposed scheme, a proportional controller is subtly employed to stabilise the setpoint response, and then an H2 optimal controller ... View full abstract»

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  • Design of decoupled PI controllers for two-by-two systems

    Publication Year: 2002, Page(s):74 - 81
    Cited by:  Papers (23)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (758 KB)

    The design of PI controllers for systems with interacting loops is discussed. It is advantageous to deal with the interaction at the loop level, because supervisory control seldom has sufficient bandwidth. A new scheme based on modified scalar PI design and static decoupling is developed, in which the frequency characteristic of the coupling between the lower-level loops is taken into account. Thi... View full abstract»

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  • Haar wavelet method for solving lumped and distributed-parameter systems

    Publication Year: 1997, Page(s):87 - 94
    Cited by:  Papers (25)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (628 KB)

    An operational matrix of integration based on Haar wavelets is established, and a procedure for applying the matrix to analyse lumped and distributed parameter dynamic systems is formulated. The technique can be interpreted from the incremental multiresolution viewpoint. Crude as well as accurate solutions can be obtained by changing the parameter m; in the mean time, the main features of the solu... View full abstract»

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  • Passivity-based integral control of a boost converter for large-signal stability

    Publication Year: 2006, Page(s):139 - 146
    Cited by:  Papers (33)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (242 KB)

    This paper presents a new integral control law for a boost converter that ensures the stability of large-signal operation. The integral controller is derived in two steps by means of passivity-based control theory. First, a static law, which ensures global stability, is obtained. Secondly, a combination of the storage function of this static law and a new positive semidefinite storage function res... View full abstract»

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  • Robust compensator design for exploiting existing control systems

    Publication Year: 2000, Page(s):71 - 79
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (348 KB)

    Simple design methods are proposed for attaching compensators to improve the robustness of previously designed control systems in use. Robust model matching (RMM) is a practical approach to designing robust compensators. First, RMM is generalised and its standard design procedure is presented. Then, by considering the configuration of RMM, design methods for attachable robust compensators are sugg... View full abstract»

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  • Output feedback discrete-time sliding mode control for time delay systems

    Publication Year: 2006, Page(s):387 - 396
    Cited by:  Papers (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (199 KB)

    Several algorithms for discrete-time quasi-sliding mode control of time-delay systems with different delay and disturbance structures are proposed. Four different delay structures are considered. All the algorithms are based on multirate output feedback. Hence, they are more practical than state feedback and are less complex compared with observer-based control strategies. View full abstract»

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  • Solution of two-stage Kalman filter

    Publication Year: 2005, Page(s):152 - 156
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (493 KB)

    Some extensions to the results of Hsieh's and Ignagni's work for the two-stage Kalman filter are given, in which the bias vector is expressed by a first-order auto-regressive model. Two new results are obtained. The first is the derivation of an equivalent expression for the covariance of process noise of the modified bias-free filter, where the state noise is correlated with that of the bias. Thi... View full abstract»

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  • Sampled-data stabilisation of networked control systems with nonlinearity

    Publication Year: 2005, Page(s):609 - 614
    Cited by:  Papers (41)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (163 KB)

    A new approach to robust stabilisation of a class of sampled-data systems with nonlinear uncertainties is proposed. The case that the plant and the controller are connected via a network channel, which may be subjected to data packet dropout and communication delays is of particular interest. Such systems as continuous-time nonlinear systems with delayed input are modelled. Sufficient conditions o... View full abstract»

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  • Output feedback sliding mode design for linear uncertain systems

    Publication Year: 1997, Page(s):209 - 216
    Cited by:  Papers (35)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (784 KB)

    The paper considers the development of output feedback sliding mode controllers for a class of uncertain linear systems. The presence of stable invariant zeros and matched uncertainty is incorporated in the design procedure. The sufficient conditions for developing static output feedback sliding mode controllers are first reviewed. If `Kimura-Davison' conditions are satisfied, it is shown that it ... View full abstract»

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  • Multiloop PI/PID controller design based on Gershgorin bands

    Publication Year: 2002, Page(s):68 - 73
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (577 KB)

    A new definition of the ultimate point is proposed for diagonally dominant, MIMO systems. Analytical formulas are developed for the new ultimate gains and ultimate frequencies based on the system frequency response and Gershgorin bands. Decentralised PI and PID controllers with set-point weighting factors can be tuned by using a modified version of the Ziegler-Nichols (ZN) relations. The proposed ... View full abstract»

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  • Backstepping-based adaptive PID control

    Publication Year: 2002, Page(s):54 - 59
    Cited by:  Papers (16)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (492 KB)

    This paper addresses analysis and design issues in adaptive PID control for linear second-order minimal phase processes using the backstepping algorithm. The first step consists in adding an integral action to the basic backstepping algorithm to obtain a zero static error.. An integrator is therefore added to the plant model and is then slid back to the controller equation at the end of the design... View full abstract»

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  • Convolved and simultaneous two-mode input shapers

    Publication Year: 1997, Page(s):515 - 520
    Cited by:  Papers (32)  |  Patents (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (580 KB)

    Input shaping is a method of reducing residual vibrations in computer controlled machines. Vibration is eliminated by convolving a sequence of impulses with a desired system command to produce a shaped input that is then used to drive the system. Techniques for designing the impulse sequence for two-mode systems are presented. Properties of the various techniques are compared as a function of the ... View full abstract»

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  • Adaptive fuzzy sliding-mode control for PM synchronous servo motor drives

    Publication Year: 1998, Page(s):63 - 72
    Cited by:  Papers (55)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (816 KB)

    An adaptive fuzzy sliding-mode control system, which combines the merits of sliding-mode control, the fuzzy inference mechanism and the adaptive algorithm, is proposed. First a sliding-mode controller with an integral-operation switching surface is designed. Then a fuzzy sliding-mode controller is investigated in which a simple fuzzy inference mechanism is used to estimate the upper bound of uncer... View full abstract»

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  • Pole-placement for SISO linear systems by state-derivative feedback

    Publication Year: 2004, Page(s):377 - 385
    Cited by:  Papers (19)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (312 KB)

    A procedure for solving the pole-placement problem for a linear single-input/single-output (SISO) systems by state-derivative feedback is described. This pole-placement problem is always solvable for controllable systems if all eigenvalues of the original system are nonzero. Then any arbitrary closed-loop poles can be placed to achieve the desired system performance. The solution procedure results... View full abstract»

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  • Application of a full-order extended Luenberger observer for a position sensorless operation of a switched reluctance motor drive

    Publication Year: 1996, Page(s):401 - 408
    Cited by:  Papers (26)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (708 KB)

    Switched reluctance motors (SRMs) are rapidly becoming more popular in industrial applications where variable speed is required because of their simple construction, ease of maintenance, low cost and high efficiency. However, the operation of the SRM is heavily dependent upon precise information about rotor position, measurement of which may be very expensive or prohibited because of the nature of... View full abstract»

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  • Autotuning and controller design for processes with small time delays

    Publication Year: 1999, Page(s):415 - 425
    Cited by:  Papers (37)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (604 KB)

    A set of general expressions is derived from a single asymmetrical relay feedback test for online plant identification. The expressions also remain valid for an odd symmetrical limit cycle test method. Using the expressions, the exact parameters of open-loop stable and unstable first-order plus time delay (FOPDT) and second-order plus time delay (SOPDT) transfer function models may be obtained fro... View full abstract»

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  • Robust neural network controller for variable airflow volume system

    Publication Year: 2003, Page(s):112 - 118
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (444 KB)

    The HVAC industry expects the automation and control systems to perform well throughout the year without the requirement to re-tune the system and to conserve energy. To satisfy these requirements it is necessary to provide a basic control algorithm that will respond well to the presence of nonlinear behaviour in HVAC equipment. The PID algorithm has to be enhanced to handle the highly nonlinear f... View full abstract»

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  • Robust control of cars with front and rear wheel steering

    Publication Year: 2002, Page(s):394 - 404
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (869 KB)

    A steering performance enhancement system for a 4WS car designed to improve the ability of the driver to keep the vehicle on the desired path is described. The system is commanded by the driver to control the front and rear wheel steering. The system is developed on the basis of a single-gain design approach having three goals: first, to guarantee that the lateral acceleration follows the driver's... View full abstract»

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Aims & Scope

Published from 1994-2006, IEE Proceedings - Control Theory and Applications contained significant and original contributions on control theory and its applications. It was devoted to control systems in the broadest sense, covering new theoretical results and the applications of new and established control methods.

Full Aims & Scope