Proceedings of 2003 IEEE Conference on Control Applications, 2003. CCA 2003.

25-25 June 2003

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  • Proceedings of 2003 IEEE Conference on Control Applications - CCA 2003 [front matter]

    Publication Year: 2003, Page(s):i - xxxii
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  • A nonlinear output feedback control method for magnetic bearing systems

    Publication Year: 2003, Page(s):960 - 965 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (294 KB) | HTML iconHTML

    In this paper, a nonlinear output feedback control method is proposed for a magnetic bearing system which has a strong nonlinearity in the magnetic bearing system which has a strong nonlinearity in the magnetic actuator. The basic idea is to make full use of the feature that the dynamics part is linear and hence can be stabilized by output of the actuator is regarded as a virtual input. Then it is... View full abstract»

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  • Energy preserving control of a hopping robot based on hybrid port-controlled Hamiltonian modeling

    Publication Year: 2003, Page(s):1136 - 1141 vol.2
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (424 KB) | HTML iconHTML

    In this paper, we propose an energy-based approach to feedback control problem for a hopping robot on an elastic ground. In order that the system behaves in a periodic hopping motion, we make an attempt to keep the system's total energy (Hamiltonian) to a certain specified value. Since our target is inherently a hybrid system that has discontinuous and discrete event dynamics, we suggest a suitabl... View full abstract»

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  • Author index

    Publication Year: 2003, Page(s):1493 - 1500
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  • Stabilization of inertia wheel pendulum using output feedback back-stepping

    Publication Year: 2003, Page(s):977 - 982 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (407 KB) | HTML iconHTML

    The main contribution of the paper is an output-feedback application in the inertia wheel pendulum (IWP). Due to the absence of a separation principle, it is necessary to design control laws that guarantee robustness against the observer error. We present a design, which renders the system iISS with respect to the observer error and, hence, ensures robustness when the error is exponentially decayi... View full abstract»

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  • A study on recursive algorithm of moving horizon estimation

    Publication Year: 2003, Page(s):972 - 976 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (347 KB) | HTML iconHTML

    A recursive algorithm of moving horizon estimation (MHE) with the convergence property is presented in this paper. In this work, we formulate the state estimation problem as a quadratic program problem with fixed-size estimation window and a recursive formula for prior state estimation and covariance matrix is established. The proposed algorithm can improve the performance of MHE and offers advant... View full abstract»

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  • Speed regulation of DC motors using intelligent controllers

    Publication Year: 2003, Page(s):925 - 930 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB) | HTML iconHTML

    In this paper we propose several new methods in order to control the speed regulation of a DC motor. These methods are fuzzy auto tuning, gas-based PID controller, gas-based fuzzy PID controller and fuzzy PID controller using neural network. All the control strategies utilize the output speed error and its derivative as feedback damping signals. View full abstract»

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  • Research on lift feedback fin stabilizer system and its intelligence controller

    Publication Year: 2003, Page(s):966 - 971 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (351 KB) | HTML iconHTML

    A lift feedback fin stabilizer is a new kind of fin stabilizer, which is the most effective ship roll reducing equipment. The defects of a fin angle feedback fin stabilizer are discussed, the control principle and an improved design of lift feedback fin stabilizer are given, and finally, the PID neural network controller is proposed in this paper. View full abstract»

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  • Transfer function evaluation in MRAC for synchronous machine speed

    Publication Year: 2003, Page(s):920 - 924 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB) | HTML iconHTML

    In this paper, model reference adaptive control (MRAC) with adjustable reference model parameters is presented. The adjustable MRAC can force the controlled plant to follow as closely as possible a desired reference model whose parameters can be adjusted online through fuzzy logic easily and properly, ensuring that the error between the outputs of the real system and the reference model approaches... View full abstract»

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  • Fault tolerant liveness analysis for a class of Petri nets

    Publication Year: 2003, Page(s):1046 - 1051 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB) | HTML iconHTML

    Although Petri nets have been widely used in the analysis of manufacturing systems, real systems usually suffer from failure prone resources, which makes it difficult to apply existing Petri net analysis methods to control manufacturing systems based on Petri net theory. Existing Petri net theory is deficient in analyzing the liveness property for systems with unreliable resources. Reachability an... View full abstract»

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  • Controller design for integrating processes using user-specified gain and phase margin specifications and two degree-of-freedom IMC structure

    Publication Year: 2003, Page(s):898 - 902 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (390 KB) | HTML iconHTML

    In real industrial practice, controller designs are usually performed based on an approximate model. Furthermore, the parameters of the physical systems can vary with operating conditions and time. Therefore, it is essential to design a control system, which will show a robust performance in the case of aforementioned situations. Gain and phase margins are well known measures for maintaining the r... View full abstract»

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  • Simple counting rule for optimal data fusion

    Publication Year: 2003, Page(s):1186 - 1191 vol.2
    Cited by:  Papers (8)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (353 KB) | HTML iconHTML

    In the problem of optimal decision fusion, the data fusion center receives the information sent independently by each detector. Z. Chair and P.K. Varshney et al., (1986) showed that, the optimal decision rule is a weighted sum of local decisions, and the weight is a function of the probability of detection (PD) and the probability of false alarm (PF).PD and PF... View full abstract»

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  • Actuator fault compensation for a helicopter model

    Publication Year: 2003, Page(s):1372 - 1374 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (250 KB) | HTML iconHTML

    A fault-tolerant system is the one that can continue its operation without significant impact on performance in the presence of hardware and/or software errors. In this paper, the design of a fault-tolerant flight controller to control UH-60 helicopter is investigated. A 9th-order state space representation of the helicopter model operating at the forward mode with 80 knots is presented; then a fa... View full abstract»

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  • A modern control system application in metals processing and technological progress

    Publication Year: 2003, Page(s):865 - 869 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (341 KB) | HTML iconHTML

    In this article, networks and automation structures, which are used in continuous galvanizing line (CGL), is the last project of Cold Mill Lines in Eregli Iron and Steel Works Co., has researched. Network structure is necessary due to complex structure of continuous lines. Server-client system, producer-consumer system and leader/follower-synchronization system which are used in ODS configurations... View full abstract»

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  • State estimation of induction motor using unscented Kalman filter

    Publication Year: 2003, Page(s):915 - 919 vol.2
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (354 KB) | HTML iconHTML

    In this paper, a new estimation technique unscented Kalman filter (UKF) is applied to state observation in field oriented control (FOC) of induction motor. UKF, a recent derivative-free nonlinear estimation tool, is used for estimating rotor speed and fluxes using sensed stator current and voltages. In the simulations, UKF, whose several intrinsic properties suggest its use over EKF in highly nonl... View full abstract»

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  • New perspectives in time(d) Petri nets and their analysis

    Publication Year: 2003, Page(s):1041 - 1045 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (358 KB) | HTML iconHTML

    Time(d) Petri nets (PNs) modify the basic PN semantics to model temporal relations and constraints of a system. This paper shows how to model these relations without modifying the basic definition of PNs, and is an extension of another paper, where time is represented as a state of a system, to improve its analysis methods. Temporal and logical relations are naturally intertwined, enabling the con... View full abstract»

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  • Bit streams: an alternative approach to digital controller implementation

    Publication Year: 2003, Page(s):892 - 897 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (431 KB) | HTML iconHTML

    In a digital controller, a multi-bit binary word is produced at regular intervals, which an arithmetic unit uses to generate a new control word for the next sampling interval. This paper proposes a similar and yet a different technique to implement cascade controllers. Instead of a multi-bit word a single bit stream represents the analogue signal and elementary digital gates implement the required... View full abstract»

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  • Design and implementation of an Internet-based embedded control system

    Publication Year: 2003, Page(s):1181 - 1185 vol.2
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (397 KB) | HTML iconHTML

    The inclusion of Internet communication within the loop of control is innovative compared with the design methodologies of classical control system. This paper presents the design and implementation of a web-based, real-time temperature control system using an Internet-based embedded microcontroller. The UML classes are employed to encapsulate the system architecture to be consistent with the modu... View full abstract»

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  • A max plus algebra approach for modelling and control a supply chain

    Publication Year: 2003, Page(s):1425 - 1430 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (379 KB) | HTML iconHTML

    Studies on supply chain analysis have emphasised the importance of a good modelling technique and a good control. The supply chain systems belong to the class of discrete event systems (DES) subject to synchronisation phenomena. In this paper, we propose a timed event graph (TEG) which is very well adapted to model this kind of DES and we develop the control synthesis using the (max,+) algebra. View full abstract»

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  • Performance measures for input shaping

    Publication Year: 2003, Page(s):1227 - 1232 vol.2
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (499 KB) | HTML iconHTML

    Input shaping is a technique used for reducing command-induced residual vibration. A train of impulses, known as the input shaper, is convolved with a reference command, such that the new command causes little or no vibration. The performance, or efficiency, of the input shaper is generally measured by comparing the residual vibration from the shaped command with the residual vibration from the un... View full abstract»

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  • Detection of sensor abrupt faults in aircraft control systems

    Publication Year: 2003, Page(s):1366 - 1371 vol.2
    Cited by:  Papers (3)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (470 KB) | HTML iconHTML

    A weak model based method for the detection of sensor abrupt faults in aircraft control systems is introduced. The method is characterized by simplicity and the capability of operating exclusively upon a single monitored signal. It is based upon the fact that abrupt faults are characterized by time constants much smaller than those of the aircraft, and employs signal non-stationarity removal, sign... View full abstract»

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  • Multifunctional two-coordinate scanning system

    Publication Year: 2003, Page(s):1153 - 1157 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB) | HTML iconHTML

    Nowadays, the two-coordinate drives systems have became special and widespread group of multidimensional industrial control systems. They are used for control of the planar manipulators, for positioning of the two-coordinate positioning tables and scanning devices. The variety of control tasks causes the variety of different structures of two-coordinate drives system. The proposed framework attemp... View full abstract»

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  • An agent-oriented architecture for F.M.S. control/monitoring

    Publication Year: 2003, Page(s):1024 - 1028 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB) | HTML iconHTML

    This paper presents a multi-blackboard approach to design and implement a control/monitoring system for the automation of production systems. The proposed architecture is composed of several control/monitoring agents (CMAs) organised hierarchically. Communication between agents is done through a corresponding hierarchy of blackboards, in which the consistency of replicated data is maintained. View full abstract»

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  • Control design for robust performance of a direct-drive robot

    Publication Year: 2003, Page(s):1448 - 1453 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (502 KB) | HTML iconHTML

    An experimental approach to achieve robust performance of direct-drive robot motion control is presented in this paper. It consists of: (i) decoupling the robot dynamics via feedback linearisation; (ii) frequency domain identification of the decoupled dynamics; (iii) compensation of these decoupled dynamics using feedback controllers designed via μ-synthesis. The designed controllers ensure rob... View full abstract»

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  • Robust passification using norm bounded uncertainty models

    Publication Year: 2003, Page(s):1327 - 1332 vol.2
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    Passivity based controllers are known to provide robust stability for inherently passive dynamic systems. Recently, with the development of "passification" techniques, these controllers are also shown to be effective in robust stabilization of non-passive systems. However, the robustness of stability in this case depends on the robustness of passification. The frequency domain sufficient condition... View full abstract»

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