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Intelligent Control and Automation, 2002. Proceedings of the 4th World Congress on

Date 10-14 June 2002

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  • Proceedings of the 4th World Congress on Intelligent Control and Automation [front matter]

    Publication Year: 2002 , Page(s): 0_1 - 39
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    Freely Available from IEEE
  • An intelligent system for real-time monitoring and fault predicting

    Publication Year: 2002 , Page(s): 2737 - 2741 vol.4
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    First Page of the Article
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  • Author index

    Publication Year: 2002 , Page(s): 3354 - 3369
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    Freely Available from IEEE
  • Study on an adaptive tabu search genetic algorithm

    Publication Year: 2002 , Page(s): 3063 - 3065 vol.4
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    In order to solve the contradiction between reducing search space and keeping the diversity of evolution population in a genetic algorithm, an adaptive tabu search genetic algorithm is proposed. This algorithm adaptively changes the receiving probability of the tabu schema according to the diversity of evolution population, which not only reduces the search space and accelerates convergence speed but also efficiently avoids premature convergence. The simulation results show that the algorithm presented in the paper is effective. View full abstract»

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  • Application of neural network approach for MAP-MRF model-based MEG source imaging

    Publication Year: 2002 , Page(s): 2964 - 2967 vol.4
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    Magnetoencephalography (MEG) source image reconstruction is an important and difficult problem in image processing applications. It can be formulated as an inherent ill-posed and highly underdetermined linear inverse problem, encompassing a great variety of signal modeling and processing methods. According to anatomical and physiological knowledge, source distributed image is modeled by a Markov random field (MRF), and the reconstruction is defined as the maximum a posteriori estimate (MAP) based on a Bayesian framework. To acquire a global minimum solution from the posterior energy function, many optimization methods (such as GA, SA, MFA, etc.) appear in the literature are investigated. In this paper, we incorporate the ideas of artificial neural networks into this difficult optimization task. Several computer experiments were conducted in order to assess the performance of the introduced technique. View full abstract»

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  • The predictive control of the liquid level of the pre-fractionating tower of a catalyzing reforming plant

    Publication Year: 2002 , Page(s): 3066 - 3070 vol.4
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    As a common predictive control method, the Dynamic Matrix Control (DMC) algorithm has been widely studied and developed in the last two decades. It has been successfully applied in many chemical/petrochemical plants, where it has an excellent performance. For the control problem of the liquid level of the pre-fractionating tower in the catalyzing reforming plant in a refinery, this paper presents the system identification of the dynamic predictive model and the application of the DMC algorithm, besides the improvement of the algorithm to speed up the controller and make it more suitable for computer use. View full abstract»

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  • A new controller for unit production system

    Publication Year: 2002 , Page(s): 2869 - 2872 vol.4
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    In this paper, we discuss the purpose to develop a hanger system for garment industries in Macao, which not only can increase the rate of production efficiency but also reduce the production cost. We illustrate how to make a prototype of the hanger system using the programmable logic controller and RFID. We explain the system's operation principle and discuss the design of the software and hardware used. View full abstract»

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  • A business intelligence-based supply chain management decision support system

    Publication Year: 2002 , Page(s): 2622 - 2626 vol.4
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    In this paper, the characteristics and components of business intelligence (BI) are introduced. Then a supply chain management decision support system (SCMDSS) based on BI is proposed. Finally, the implementation of the SCMDSS in a manufacturing enterprise is described in detail. View full abstract»

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  • Design and implementation of Yi Chang production-sales computer system based on CIMS structure

    Publication Year: 2002 , Page(s): 2627 - 2630 vol.4
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    The computer system for the production and sales of Shanghai Bao Steel Yi Chang Steel Strip Co., Ltd. is designed and developed. The CIMS structure is considered and some functions of which are incorporated in order to shorten the developing time. This system was implemented and applied successfully in the factory. View full abstract»

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  • Implementation of distributed intelligent control system based on multi-agents

    Publication Year: 2002 , Page(s): 2673 - 2676 vol.4
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    It is necessary to implement distributed intelligent control systems (DICS) because of the demand of large scaled and complexity control systems in industry processes. The characteristics of traditional control systems and DICS are described. A DICS model of a complex industrial process is set up by using multi-agents, and a kind of distributed intelligent multiobjective optimal algorithm is proposed. The multi-agent system is created according to the practical characteristics of the control system of a digester process. It is integrated by using CORBA, and the simulation result of a practical digester process is shown. View full abstract»

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  • The principle and application of synergetic pattern recognition

    Publication Year: 2002 , Page(s): 3122 - 3126 vol.4
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    The paper first expounds the principle of synergetic pattern recognition. Then it discusses the implementation techniques of the pathology image classification system based on the principle in detail. What's more, to resolve the problem that the synergetic neural network is weak in recognizing new test samples, it presents the information superposition self-learning algorithm based on a genetic algorithm. The experimental results prove the effectivity of the algorithm. View full abstract»

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  • Non-convex states constrained system control algorithm via geometric techniques

    Publication Year: 2002 , Page(s): 3210 - 3214 vol.4
    Cited by:  Papers (2)
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    The algorithm of constrained system control via geometric techniques does well in dealing with the control problem of the systems with convex constraints on states and control inputs. In some control applications, the states constraints may be non-convex. It is hard to find a suitable solution for such a system according to the traditional methods. The algorithm of constrained control is on the base of geometric and set theory, so it has the advantage for dealing with such control problems. A new algorithm for controlling the system with non-convex states constraints is proposed on the basis of the algorithm of constrained system control via geometric techniques. The new algorithm ensures that the system states are suitable to the constraints by choosing suitable final set, level sets and control inputs according to the time-optimal function. View full abstract»

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  • Adaptive maneuvering targets tracking for multiple airborne mobile platforms and sensors

    Publication Year: 2002 , Page(s): 2677 - 2681 vol.4
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    The problem of adaptive maneuvering targets tracking for multiple airborne mobile platforms and sensors in a fusion system is considered. First, the maneuvering target dynamic state equation based on the current statistical model is presented. Then, in the environment of multiple airborne mobile platforms and sensors, the state and measurement equations of the maneuvering targets are deduced. Finally, the adaptive maneuvering target tracking algorithm is given. Monte-Carlo simulation shows that the algorithm produced in this paper can estimate the state of maneuvering targets effectively. View full abstract»

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  • Protocol analysis based on EPr/TN net

    Publication Year: 2002 , Page(s): 2892 - 2895 vol.4
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    Protocol analysis is the center of protocol engineering science, and the performance of computer networks can be evaluated through it. A protocol is analyzed for quality and quantity using EPr/TN for qualitative analysis. The EPr/TN model is given and some properties relative to the protocol can be deduced; quantitative analysis is made through the performance expression that can be obtained by the EPr/TN model describing the parameter relation of protocol flows. View full abstract»

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  • Input estimation for uncertain linear singular systems and robust stabilization

    Publication Year: 2002 , Page(s): 2917 - 2921 vol.4
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    In this paper, the problem of state and input estimation for linear singular systems with unknown inputs is concerned. An equivalent standard state spaces system is derived for the purpose of the observer design. The necessary and sufficient conditions for the existence of, the observer and the simple method to design the observer are given. The robust stability of the closed-loop obtained by dynamic output feedback is also discussed. View full abstract»

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  • Establishment of element for dynamic braking

    Publication Year: 2002 , Page(s): 3196 - 3198 vol.4
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    By means of equivalent circuit of three-phase asynchronous machines the mathematical model for dynamic braking is derived, and the computer simulation program is carried out. The simulated and measured results are in good agreement. The influences of capacitance, resistance and inertia constant on the braking process are discussed, and a method of selecting capacitor and resistance elements is given. View full abstract»

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  • Simulation and application research on a repetitive control system

    Publication Year: 2002 , Page(s): 3215 - 3218 vol.4
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    When reference input or disturbance to be eliminated is period signal, repetitive control, in theory, can track reference input without stead-state error or can eliminate disturbance. This paper is about a deeper simulation research of a modified repetitive control system and is implemented on a computer controlled DC servomotor system. Simulation and actual experience both prove the good performance of repetitive control technique. View full abstract»

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  • A road boundary detection method for autonomous land vehicle

    Publication Year: 2002 , Page(s): 2949 - 2951 vol.4
    Cited by:  Papers (2)
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    A road boundary detection method based on statistical test is proposed in which edge location and edge orientation are considered. The evidence of global boundaries on the road image can be obtained by means of statistical model analysis. Through statistical test, a multi-order line segment description of the road boundaries is achieved. The results are satisfied when this method is used in structured road image with dim shadows. View full abstract»

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  • Study and implementation of infrared digital guiding on AGV

    Publication Year: 2002 , Page(s): 3224 - 3227 vol.4
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    An automatic guided vehicle (AGV) is one of key equipment of logistic automation systems. The guiding mode possesses great influence as the controlling feature of the AGV. The paper presents a method of guiding an AGV by infrared digital signal, and introduces the modulating process of the guiding signal and the implementation method. The simulated test result indicates that infrared digital guiding has a great deal of good characteristics. View full abstract»

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  • "Soft assignment algorithm" in maneuvering targets tracking

    Publication Year: 2002 , Page(s): 2687 - 2692 vol.4
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    The optimal solution of the "assignment problem" in maneuvering target tracking (MTT) is how to associate measurements with tracks correctly. It is critical in MTT. The earlier "traditional assignment algorithm" has poor performance because it does not consider missing and new targets. The modern augment assignment algorithm overcomes the two shortcomings above, but at the same time, the risk of error association probability becomes higher. This paper presents a new assignment algorithm-"soft assignment". It need not consider missing and new targets while it is an optimal solution based on the following two criteria: (1) the correct association probability is high; (2) the number of associations is near to the actual ones. The two criteria are presented in the form of function and the optimal solution using "soft assignment" can also be obtained. View full abstract»

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  • Auto-tuning of cascade control systems

    Publication Year: 2002 , Page(s): 3339 - 3343 vol.4
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    In this paper, a novel auto-tuning method for cascade control system is proposed. By utilizing the fundamental characteristic of cascade control systems, a simple relay feedback test is applied to the outer loop to identify simultaneously both inner and outer loop model parameters. A model matching PID controller tuning method based on the Pade coefficient and Markov parameter approximation is proposed for the overall system performance. Consequently, well-established model based PI tuning rules for inner loop combined with the model matching method for outer loop make the auto-tuning process simple and yet effective. It can be directly integrated into commercially available industrial autotuning systems. Two examples are given to illustrate the effectiveness and robustness of the proposed method. View full abstract»

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  • On the robustness of linear delayed systems with nonlinear uncertain parameters

    Publication Year: 2002 , Page(s): 3085 - 3087 vol.4
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    The present paper studies the robust stability of an uncertain state-space system with time delay. The uncertain state-space time-delayed model which allows second-order uncertain parameters, and the time-delayed model has a strong practical background. A robustness criteria based on the model is derived. View full abstract»

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  • Hybrid intelligent control algorithm to ship steering based on soft computing

    Publication Year: 2002 , Page(s): 2978 - 2982 vol.4
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    A hybrid intelligent technique is used for ship steering control in this paper. GA optimization is used for the off-line learning period. According to the new definition of fitness function, the optimized result obtained is more suitable to the actual situation. In an online learning period, the reinforcement learning and neural fuzzy control are integrated. It removes the drawback of the conventional hybrid intelligent algorithm that learning must be provided with some sample data, and the ship control quality is effectively improved in the case of appending additional sea state disturbance. View full abstract»

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  • Application of single neuron PID controller in asymmetric cylinder electrohydraulic servo system

    Publication Year: 2002 , Page(s): 3136 - 3140 vol.4
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (435 KB)  

    It is well known that an asymmetric cylinder fifth-order electrohydraulic servo system is a class of typical high-order one with nonlinearity, time-varying and gain asymmetric. Because dynamic performances of the servo system vary greatly with the variable load, conventional PID is very difficult to be used to reach the desired performance target. 20-SIM simulation software is a simulation tool based on bond graph theory, and it is very suitable for simulation of nonlinear systems. Based on the aforementioned characteristics, we set up a simulation model using 20-SIM simulation tool, and design an online self-learning single neuron PID control algorithm. Simulation results show that this single neuron PID control scheme is better than conventional PID control. View full abstract»

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  • Process monitoring and optimal control in alcohol production enterprises under a CIMS information integration environment

    Publication Year: 2002 , Page(s): 2640 - 2644 vol.4
    Cited by:  Papers (1)
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    In this paper, the problems of process monitoring and optimal control in alcohol production enterprises are presented. Our process monitoring program is designed using the standard languages VB and VC together with the industrial configuration software. We also explore the optimal process control strategy based on both static and dynamic simulation models. The implementation details of these two proposed schemes under a CIMS information integration environment are also given. View full abstract»

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