In this paper, the model predictive control law for sampled-data systems is presented. Compared to the standard model predictive controller, the new controller considers the intersampling behavior of the continuous sy...
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In this paper, the model predictive control law for sampled-data systems is presented. Compared to the standard model predictive controller, the new controller considers the intersampling behavior of the continuous system. First we convert the hybrid optimization problem to an equivalent discrete-time one and solve it using dynamic programming. Then we show that the controller is stabilizing.
Fault diagnosis systems have attracted the growing interest of researchers in a number of engineering areas. The number of applications has increased and successful results are reported widely. This paper presents the...
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Fault diagnosis systems have attracted the growing interest of researchers in a number of engineering areas. The number of applications has increased and successful results are reported widely. This paper presents the results of principal component analysis carried out on the Outokumpu flash smelting process the waste heat boiler being analysed in more detail. The PCA results are evaluated and the configuration of a fault diagnosis system is proposed.
Currently, most commercial robot manipulators are equipped with conventional PID controllers due to their simplicity in structure and ease of design. Using such a controller, however, it is difficult to achieve a desi...
Currently, most commercial robot manipulators are equipped with conventional PID controllers due to their simplicity in structure and ease of design. Using such a controller, however, it is difficult to achieve a desired control performance since the dynamic equations of a mechanical manipulator are tightly coupled. In addition, they are highly nonlinear and uncertain. This paper uses a new hybrid control scheme to control a direct drive two-link manipulator under inertial parameters changes. The proposed hybrid control scheme consists of a fuzzy logic proportional controller and a conventional integral and derivative controller (FUZZY P+ID). In comparison with a conventional PID controller, only one additional parameter has to be adjusted to tune the FUZZY P+ID controller. The outlined experimental results demonstrate the effectiveness and the robustness of the new FUZZY P+ID controller.
This paper present a new effective algorithm for the optimal realization of sampled-data SISO two order controller structures using the delta operator subject to Finite-Word-Length (FWL) constraints. The problem is fo...
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This paper present a new effective algorithm for the optimal realization of sampled-data SISO two order controller structures using the delta operator subject to Finite-Word-Length (FWL) constraints. The problem is formulated as a non-linear programming problem with a maximum of four independent variables to provide an easy and efficient optimization tool to solve such complex problems. Simulation results of the optimum FWL realizations of digital SISO two order controller structure applied to an electrohydraulic actuator system are presented to illustrate the effectiveness of the proposed strategy.
Constrained predictive controller that is based on Youla-Kučera (YK) parametrisation of all stabilising controllers is discussed. The optimised variables are not future control increments as usual but directly paramet...
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Constrained predictive controller that is based on Youla-Kučera (YK) parametrisation of all stabilising controllers is discussed. The optimised variables are not future control increments as usual but directly parameters of the controller. Both finite and infinite horizon formulations are handled.
This paper has developed a recursive least squares scheme for operating a class of continuous fermentation processes at the optimal steady state productivity. More precisely, the class of continuous fermentation proce...
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This paper examines the problem of high frequency multi-input periodic operation of continuous fermentation process. Based on π-criterion published prevously, it is shown theoretically that a continuous fermentation ...
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A dynamical mathematical model of a water supply plant based on lumped parameters is described. A concept of its control system is proposed that ensures output pressure stabilisation under conditions of variable water...
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A dynamical mathematical model of a water supply plant based on lumped parameters is described. A concept of its control system is proposed that ensures output pressure stabilisation under conditions of variable water consumption and variable water recourses. The control system consists of inner control loops which control the flow of each pump station and of a superimposed control loop that controls the output pressure of the water supply plant. The pressure controller calculates the cumulative reference value of the water flow for all controlled pumps and from this value an algorithm for the flow distribution calculates the reference flow for each inner loop, taking into account the level of water accumulation in each water well. control performances of output pressure obtained by a conventional PI controller and a fuzzy logic based controller are compared.
作者：
Zoran VukićEdin OmerdićLjubomir KuljacaUniversity of Zagreb
Faculty of Electrical Engineering and Computing Department of Control and Computer Engineering in Automation Unska 3 HR-10000 Zagreb Croatia University of Tuzla
Faculty of Electrical and Mechanical Engineering Department of Control Engineering in Automation Franjevačka 2 BH-75000 Tuzla Bosnia and Herzegovina
Improved 2-input fuzzy autopilot for ship course control and 3-input fuzzy autopilot for track-keeping are proposed. Nonlinear model of a ship and a steering subsystem is used. The 3-input fuzzy autopilot uses heading...
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Improved 2-input fuzzy autopilot for ship course control and 3-input fuzzy autopilot for track-keeping are proposed. Nonlinear model of a ship and a steering subsystem is used. The 3-input fuzzy autopilot uses heading signal, yaw rate signal and lateral offset from the nominal track to produce a command rudder angle. Input variable fuzzyfication, fuzzy associative memory rules and output set defuzzyfication are described. Obtaining of FAM rules for 3-input fuzzy is described. Dynamical behavior of 2 and 3-input fuzzy autopilot is compared. The influence of wave disturbance, sea current and external disturbance from a passing ship on track-keeping performance was analyzed.
Interpreted Petri nets (IPN) are an extension of the basic Petri net (PN) framework. They are ordinary PN with additional components to model the information flow to and from the PN. This contribution gives a general ...
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Interpreted Petri nets (IPN) are an extension of the basic Petri net (PN) framework. They are ordinary PN with additional components to model the information flow to and from the PN. This contribution gives a general overview of the control design process. Furthermore, it shows how the different tasks in this process, especially analysis, verification and validation, can be successfully solved within the formal IPN framework.
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