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Proceedings of the International Conference on Control Applications

18-20 Sept. 2002

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  • Proceedings of the 2002 IEEE International Conference on Control Applications (Cat. No.02CH37330)

    Publication Year: 2002
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    Freely Available from IEEE
  • Who's intelligent? Wheelchair, driver or both?

    Publication Year: 2002, Page(s):760 - 765
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (422 KB) | HTML iconHTML

    Intelligent wheelchair control has been a topic for many research projects in recent years, but few developments have been successfully transferred from the research to service or commercial domains. This paper addresses some of the reasons for the failure of technology transfer, and offers suggestions for more successful exploitation of research effort in the future. The paper illustrates the key... View full abstract»

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  • Stabilizing control design of fully linearizable systems via estimated states

    Publication Year: 2002, Page(s):1333 - 1338 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB) | HTML iconHTML

    This paper is concerned with the problem of designing stabilizing controllers for nonlinear systems using feedback linearization with estimated states. It is assumed that the systems under consideration are fully linearizable, but the full state is not completely accessible, so that an observer is included in the loop. Sufficient conditions are set to guarantee that the overall system trajectories... View full abstract»

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  • General Index of Authors, Speakers & Chairs

    Publication Year: 2002, Page(s):1345 - 1351
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    Freely Available from IEEE
  • Calibratable model-based controllers

    Publication Year: 2002, Page(s):1056 - 1057 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (254 KB) | HTML iconHTML

    Model-based, multivariable controllers can be made calibratable by using linear parameter-varying techniques. This opens the venue to use model-based controllers which outperform classical controllers in the automotive industry without changing the traditional way of designing control systems for the industry. An illustrative example is presented. View full abstract»

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  • Experimental and robustness analysis of a multivariable control for vertical dynamic of a high speed craft

    Publication Year: 2002, Page(s):1070 - 1075 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (363 KB) | HTML iconHTML

    This paper deals with post design robustness analysis of fast ferries vertical dynamic controllers, and experimental study of a PD multivariable control. First a PD multivariable control is designed, then we consider the discrepancy between the real system and the nominal design model. This discrepancy can be expressed as structured uncertainties by linear fractional transformations. These uncerta... View full abstract»

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  • Fuzzy control of a neutralization process

    Publication Year: 2002, Page(s):1032 - 1037 vol.2
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (447 KB) | HTML iconHTML

    This paper studies the control of a pH neutralization process by using a fuzzy controller. As the process to be controlled is highly nonlinear the PI-type fuzzy controller used generally is not able to control the system adequately. For this, based on prior knowledge, the pH neutralization process is divided into fuzzy regions such as high-gain, medium-gain and low-gain, and an auxiliary variable ... View full abstract»

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  • Marine course-changing manoeuvre: a comparative study of control algorithms

    Publication Year: 2002, Page(s):1064 - 1069 vol.2
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (387 KB) | HTML iconHTML

    This paper describes several control structures for steering manoeuvres in a non-linear model of the R.O.V. Zeefakkel ship. The nonlinearity of the model appears in considerable variations both the parameters of its rudder course-changing commands and the saturation of its rudder angle and speed. This nonlinear behaviour causes a greater difficulty in the adjustment of the parameters of a single c... View full abstract»

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  • How to improve control system performance using FF function blocks

    Publication Year: 2002, Page(s):1022 - 1026 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (378 KB) | HTML iconHTML

    An important process control trend is the implementation of digital communication with field control devices. Traditional distributed control systems are being augmented with smart field instruments. Foundation Fieldbus is a digital control network that interlinks such "smart" field instruments like sensors and actuators in a process control environment. In the Foundation Fieldbus all the control ... View full abstract»

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  • Robust stability of multilinear affine polynomials

    Publication Year: 2002, Page(s):1327 - 1332 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB) | HTML iconHTML

    This paper deals with the robust stability problem of multilinear affine polynomials. By multilinear affine polynomials, we mean an uncertain polynomial family consisting of multiples of independent uncertain polynomials of the form P(s, q) = l0(q)+l1(q)s+···+ln(q)sn whose coefficients depend linearly on q = [q1, q... View full abstract»

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  • Fault localization based on loop status monitoring

    Publication Year: 2002, Page(s):844 - 849 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB) | HTML iconHTML

    A problem loop in a process plant containing a number of interacting PI or PID control loops is identified by comparing the overall loop performance indices associated with each of the loops involved. These indices are derived from a number of loop performance statistics that include the qualitative loop status, which can be one of seven categories. The derivation of the index is described and its... View full abstract»

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  • An optimal control of marine propulsion system considering ship dynamics

    Publication Year: 2002, Page(s):1058 - 1063 vol.2
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (406 KB) | HTML iconHTML

    This study investigates the optimal control of a marine propulsion system consisting of an engine, a propeller and ship's parts. First, each part of the system is analytically examined and the system is mathematically modeled. Next, the performance criterion to characterize the system performance is defined and the procedure of optimal trajectory formation is developed. Then, a new control scheme ... View full abstract»

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  • A new simple and robust control strategy for wind farm reactive power regulation

    Publication Year: 2002, Page(s):880 - 885 vol.2
    Cited by:  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (482 KB) | HTML iconHTML

    Since electrical systems endowed with variable generating units are called to dominate the electrical landscape in the near future, it is necessary to develop new tools that will allow working efficiently. In this forthcoming environment. Wind power generation is becoming one of the most important renewable energy sources. In Spain and, consequently, the simulation of wind farm power performance w... View full abstract»

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  • Energy based model of a common rail injector

    Publication Year: 2002, Page(s):1195 - 1200 vol.2
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (479 KB) | HTML iconHTML

    In order to develop a precise control of the fuel injection in diesel engines as a means to reduce noise and fuel consumption, while improving torque and power performances, a model of the fuel injection system is required. This paper proposes a simple energy-based model of a common rail injector, one of the most complex and important part of the injection system. The injector model has been valid... View full abstract»

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  • Convex optimization for control analysis application to the steam generator water level

    Publication Year: 2002, Page(s):1016 - 1021 vol.2
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (451 KB) | HTML iconHTML

    In this paper a convex synthesis methodology is applied to a benchmark problem. The objective is to control the water level in the steam generator of a Pressurized Water Reactor. Both robustness and performance constraints are specified for this benchmark. The proposed approach explicitly takes into account constraints in both time and frequency domains. In this method, specifications are expresse... View full abstract»

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  • On the design of sampled-data model-reference control systems

    Publication Year: 2002, Page(s):886 - 891 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB) | HTML iconHTML

    Design rules for a sampled-data controller which forces a linear continuous-time SISO system to track the output of a reference model while minimizing the influence of stochastic disturbance based on the LQG problem formulation are presented, and its advantages against GPC are illustrated on examples. View full abstract»

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  • Output stabilisation in multiple model approach to modelling

    Publication Year: 2002, Page(s):1315 - 1320 vol.2
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (411 KB) | HTML iconHTML

    In this paper, the separation principle for discrete nonlinear systems in multiple model representation is investigated. The separation principle deals with a property which allows the multiple observer and the multiple controller to be designed separately. Using the quadratic Lyapunov technique and LMIs (Linear Matrix Inequalities) formulation, sufficient conditions for the global exponential sta... View full abstract»

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  • Application and evaluation of DNA computing simulation by list based processing

    Publication Year: 2002, Page(s):825 - 829 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (302 KB) | HTML iconHTML

    DNA computing methods based on complementary characteristics and massive parallelism facilitate the solution of complex large-scale problems such as NP-complete problems. In this paper, we design a computer simulation system that corresponds to a basic DNA computing algorithm using list processing. Using the proposed simulation system we are able to predict a scale problem of biochemical calculati... View full abstract»

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  • PI loop status monitoring

    Publication Year: 2002, Page(s):838 - 843 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (355 KB) | HTML iconHTML

    Loop status monitoring involves the declaration of deterministic trends, such as oscillations and drifting in process plant control loops. By analysing various time domain statistics associated with PI control loops, a trend can be associated as one of seven categories. The basis for doing this is given and the categorisation process is described. View full abstract»

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  • Zoom-based head tracker in complex environment

    Publication Year: 2002, Page(s):725 - 730 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (555 KB) | HTML iconHTML

    In this paper, we establish a nearly real-time surveillance tracking system, which is able to detect any person who intrudes to a prohibited area and lock his head image at the scene center. The entire underlying algorithm consists of a motion detector, an elliptical head tracking algorithm, auto-zooming ability, and a VPDA filter which is modified by probabilistic data association filter (PDA fil... View full abstract»

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  • Design of a controller for a steam generator of a power plant using robust control and genetic algorithm

    Publication Year: 2002, Page(s):1050 - 1055 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (467 KB) | HTML iconHTML

    This paper presents a concrete approach to design a structured controller for a steam generator of a power plant while taking into account industrial specifications like, for example, the set-time of a step response or robustness margins. This approach combines the minimization of the H norm of the closed-loop system and genetic algorithm. It is flexible enough to design control ... View full abstract»

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  • Nonlinear identification of thermoacoustic instabilities with limit cycles in a Rijke tube

    Publication Year: 2002, Page(s):1147 - 1152 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (468 KB) | HTML iconHTML

    This paper deals with the development of a model of thermoacoustic instabilities, observed in a laboratory scale Rijke tube. The model is built via a thorough description of both the gas dynamics and the heat release process, which is concisely outlined. The validation is carried out on the basis of real experimental data, and it is founded on a mixed linear/nonlinear identification method with th... View full abstract»

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  • Controller design for linear unstable systems with position and rate actuator saturation

    Publication Year: 2002, Page(s):874 - 879 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (435 KB) | HTML iconHTML

    This paper focuses on the stabilization problem of linear systems subject to control amplitude and rate saturation. The considered saturating actuator is a first order system subject to input saturation and speed saturation. Some conditions for the stability of the closed-loop system despite the occurrence of saturations are formulated in terms of matrix inequalities. The closed-loop performances ... View full abstract»

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  • Stabilization of time-varying pseudo-Hamiltonian systems

    Publication Year: 2002, Page(s):954 - 959 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (355 KB) | HTML iconHTML

    In this note, the problem of stability and stabilization of time-varying pseudo-Hamiltonian control systems is investigated. First, we show a stability result for time-varying pseudo-Hamiltonian dynamic systems. The relationships among the Lyapunov function, storage function and the Hamiltonian function are revealed. Roughly speaking, they are essentially equivalent. Then a new development on the ... View full abstract»

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  • Direct control in bond graph by state estimated feedback for MIMO LTI systems

    Publication Year: 2002, Page(s):1183 - 1188 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (365 KB) | HTML iconHTML

    A state estimated feedback based on Bond Graphs for Multivariable Linear Time Invariant (LTI) Systems is proposed. A direct graphical technique (Bond Graph) to obtain the closed loop system in state variables using the open loop graph is presented. Structures for the controller and the observer directly in closed loop axe presented. Therefore, the control in the physical or in the Bond Graph domai... View full abstract»

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