This paper considers the stability analysis problem of nD discrete-time systems. It is shown that the problems of stability test and stability margin computation for an nD system described by Roesser model can be reca...
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作者：
Branislav HrúzLeo MrafkoSlovak University of Technology
Faculty of Electrical Engineering and Information Technology Department of Automatic Control Systems Ilkovičova 3 812 19 Bratislava Slovak Republic Phone: +421 2 60291698
An analysis of the transportation systems used in the flexible manufacturing systems is introduced in the paper. Based on the analysis a class of the transportation systems is delimited, whose modeling and control is ...
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An analysis of the transportation systems used in the flexible manufacturing systems is introduced in the paper. Based on the analysis a class of the transportation systems is delimited, whose modeling and control is the subject of the paper. Important property of those systems is unidirectional zone movements of the automatic guided vehicles and transport requirements occurring spontaneously during the work of the system. A special group of the colored Petri nets interpreted for control is used for the control specification. The Petri net helps to analyze the function of the transportation system and to write the control program.
This paper is concerned with an application study of model-based fault detection method to a ship propulsion system. When modeling the object system, Quasi-ARMAX model with multi-model form is used. In this model, the...
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This paper is concerned with an application study of model-based fault detection method to a ship propulsion system. When modeling the object system, Quasi-ARMAX model with multi-model form is used. In this model, the system non-linearity is incorporated into model parameters by using non-linear non-parametric models (NNMs). Kullback discrimination Information (KDI) is introduced as fault detection index to evaluate the distortion in identified model, which is caused by a fault. The effectiveness of the method is verified through simulation studies on the ship propulsion system.
This paper deals with problems related to the computation of false alarm rate (FAR), the determination of thresholds and their integration in the design of observer-based fault detection systems. Different from the kn...
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ISBN:
(纸本)0780379241
This paper deals with problems related to the computation of false alarm rate (FAR), the determination of thresholds and their integration in the design of observer-based fault detection systems. Different from the known norm-based residual evaluation methods, the probabilistic robustness theory is applied for the purposes of calculating thresholds and FAR.
An adaptive fuzzy controller is designed using a collection of fuzzy IF-THEN rules. Parameters of membership functions characterizing the linguistic terms in the fuzzy IF-THEN rules are changing according to some adap...
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An adaptive fuzzy controller is designed using a collection of fuzzy IF-THEN rules. Parameters of membership functions characterizing the linguistic terms in the fuzzy IF-THEN rules are changing according to some adaptive laws, to control a plant to track a reference trajectory. In this paper, an indirect adaptive fuzzy control design method is developed for general higher order nonlinear continuous systems. The Takagi-Sugeno type fuzzy logic system has been used to approximate the controller. It has been proved that the closed-loop system under this adaptive fuzzy controller is globally stable in the sense that all signals involved are bounded. Finally, the indirect adaptive fuzzy controll method has been applied to control an unstable system
Discrete event systems (DES) describe the behavior of a plant as it evolves over time in accordance with the abrupt and asynchronous occurrence of events. Such systems are encountered in a variety of fields, for examp...
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Discrete event systems (DES) describe the behavior of a plant as it evolves over time in accordance with the abrupt and asynchronous occurrence of events. Such systems are encountered in a variety of fields, for example sensor or actuator faults diagnosis, robotics, computers, communication networks and traffic. The control objectives of the supervisory control of DES are to prevent a set of forbidden states from being reach, to preserve the reachability of some non forbidden states, while at the same time enabling a maximal set of achievable state sequences. The aim of this paper is to introduce several approaches for the supervisors synthesis, a Matlab tool SUPCON and an on line multimedia Petri nets and DES course.
controller design approach is described, which is based on genetic algorithms. The approach uses an optimisation procedure, where the cost function to be minimised consists of the closed-loop system simulation and a p...
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controller design approach is described, which is based on genetic algorithms. The approach uses an optimisation procedure, where the cost function to be minimised consists of the closed-loop system simulation and a performance index evaluation. The designed system may be complex and practically without any limitations on its type, structure and size. The proposed approach is demonstrated on a robust controller design example
A new type of knowledge adaptive control based on the closed-loop response recognition is proposed. This approach tries to mimic the behaviour of an expert, who has a lot of experience with the particular controlled s...
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A new type of knowledge adaptive control based on the closed-loop response recognition is proposed. This approach tries to mimic the behaviour of an expert, who has a lot of experience with the particular controlled system. The adaptive system updates the controller parameters according to the changes in system behaviour. The algorithm uses a rule-based system, which evaluates the closed-loop response shape after the decay of the transient mode, and computes the corrections of controller parameters. Because the main problem of such a control structure consists in designing of the rule-base, we focused our interest on the design of an automatic procedure for the rule-base generating.
This paper considers the stability analysis problem of nD discrete-time systems. It is shown that the problems of stability test and stability margin computation for an nD system described by Roesser model can be reca...
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This paper considers the stability analysis problem of nD discrete-time systems. It is shown that the problems of stability test and stability margin computation for an nD system described by Roesser model can be recast into μ analysis problems in a unified way, thus can be solved effectively by using the commercially available software package.
In this paper model based fault tolerant estimation of vehicle lateral dynamics is studied. The core of the study is the development of an adaptive observer that is used for the estimation purpose in the fault-free si...
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In this paper model based fault tolerant estimation of vehicle lateral dynamics is studied. The core of the study is the development of an adaptive observer that is used for the estimation purpose in the fault-free situation. To be tolerant to possible sensor faults, different observers/estimator are then proposed, which deliver an estimation of lateral dynamics even if some sensors fail. Finally, the estimation performance of the proposed fault tolerant estimation system is studied.
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