In this paper, the architecture of a fuzzy processor intended for high-speed control applications is described. Its main advantage is the inference speed that does not depend on the number of used inputs and rules. Th...
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In this paper, the architecture of a fuzzy processor intended for high-speed control applications is described. Its main advantage is the inference speed that does not depend on the number of used inputs and rules. This is accomplished by the usage of content addressable memory as a rule set storage. The proposed architecture was simulated and the simulation results give the inference speed of about 200 KFLIPS.
A new technique for control system design based on the Optimal Constrained Covariance control (OC 3 ) is presented. A design procedure of control system for dynamic ship positioning is proposed. In the papers publishe...
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A new technique for control system design based on the Optimal Constrained Covariance control (OC 3 ) is presented. A design procedure of control system for dynamic ship positioning is proposed. In the papers published so far the controller gain matrices were detennined using the classical Linear Quadratic Gaussian (LQG) optimal control technique, the pole-placement technique and characteristic locus design method. The main disadvantage of these techniques is their poor correspondence with the real performance requirements of control system. Using the proposed technique this disadvantage is avoided. The results of computer simulation using OC 3 control are presented.
The paper considers the problem of stabilizing large scale dynamic systems (LSS) via decentralized controllers based on Variable Structure Systems (VSS) and using the principle of dominant subsystems. The principle an...
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The paper considers the problem of stabilizing large scale dynamic systems (LSS) via decentralized controllers based on Variable Structure Systems (VSS) and using the principle of dominant subsystems. The principle and applications for LSS are described and simulation test results on a two- machines power system with nonlinear model are presented.
作者：
M. HubaSlovak Technical University
Department of Automation and Control Faculty of Electrical Engineering and Information Technology SK-812 19 Bratislava
This paper deals with the pole assignment controller design under consideration of the control signal saturation. The controller synthesis developed for the double integrator plant is based on the decomposition of the...
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This paper deals with the pole assignment controller design under consideration of the control signal saturation. The controller synthesis developed for the double integrator plant is based on the decomposition of the 2nd order dynamics into two particular 1st order movements witch enables, together with the newly introduced geometrical interpretation of closed loop poles, an easy handling of saturation effects and yields a simlpe explicite controller fully respecting the given saturation limits. So, the specification of the closed loop poles can be made quite indipendently from the saturation effect, i.e. they only have to respect different parasitic effects like quantization and measurement noice, neclected dynamics, etc. It gives to the designer a new “degree of freedom” in comparing with the “linear” pole assignment controllers, where this choice has to take into account also the allowed control signal amplitudes.
Some techniques for the stability analysis of the control system with fuzzy logic controller are presented. The techniques are based on classical methods and they require the fuzzy controller, satisfying the sector co...
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Some techniques for the stability analysis of the control system with fuzzy logic controller are presented. The techniques are based on classical methods and they require the fuzzy controller, satisfying the sector condition. The structure of fuzzy controller, satisfying this requirement is proposed. For this controller, the analytical dependence between the stability margin and controller parameters is developed and the technique for tuning the controller parameters is also developed. The analogy with switching curve is used to tune the remaining degrees of freedom of the controller. The method is documented on a d.c. velocity servosystem.
作者：
M. SedláčekSlovak Technical University
Faculty of Electrical Engineering Department of Automation and Control 3 Ilkovičova St. Bratislava 812 19 Slovak Republic
There are presented some methods for the stability analysis of the control system with fuzzy logic controller. The methods are based on classical methods and they require fuzzy logic controller, satisfying the sector ...
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There are presented some methods for the stability analysis of the control system with fuzzy logic controller. The methods are based on classical methods and they require fuzzy logic controller, satisfying the sector condition. The necessary structure of fuzzy controller, satisfying this requirement is proposed. For this controller, the method for tuning the controller parameters is developed. The method is based on stability analysis and guarantees the stability of the system. The analogy with switching curve is used to tune the remaining degrees of freedom of the controller. The method is documented on a d.c. velocity servosystem.
New type of predictive controllers for saturating systems is described. It relies on an analytical approximation of the controlled process by the I 2 -model. The closed-loop behavior may be prescribed by means of refe...
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New type of predictive controllers for saturating systems is described. It relies on an analytical approximation of the controlled process by the I 2 -model. The closed-loop behavior may be prescribed by means of reference trajectories defined as optimal braking trajectories of the actual model as well as by choosing a time horizon for matching with these trajectories. The method essentially improves features of classical relay minimum time systems. It enables to modify their behavior in a similar way as using the pole assignment method and so to achieve a desired degree of robustness against structural and state perturbation. Taking into account saturation limits and parasitic time lags makes the task of tuning controller transparent and reliable which is illustrated by the example of positional servo control
The method for adjustment of fuzzy controller parameters is presented. In fuzzy control to he control signal s are generated by an appropriate inference mechanism from the linguistically expressedrule base. To refine ...
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The method for adjustment of fuzzy controller parameters is presented. In fuzzy control to he control signal s are generated by an appropriate inference mechanism from the linguistically expressedrule base. To refine the parameters of the rules it is necessary to have either a thorough insight into the dynamics of the overall system or to develop an appropriate adaptation mechanism. Such mechanism with Kohonen neural network like structure is presented and documented on the example of motion control system.
The fuzzy logic controller for the velocity d.c. servo system was designed. It was shown, that the system can successfully deal with the nonstationary moment of inertia and load torque and with the influence of flexib...
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The fuzzy logic controller for the velocity d.c. servo system was designed. It was shown, that the system can successfully deal with the nonstationary moment of inertia and load torque and with the influence of flexible gearbox. The practical concept of implementation using the unique transfer function and a look-up-table of coefficients was introduced. Such method is simple and has low computational requirements.
Robustness properties of non-companion representation of linear systems, studied using a criterion due to contribution of Drcuzenouic 1969, are retained to a limited extent only. Hajor drawback of this approach, utili...
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Robustness properties of non-companion representation of linear systems, studied using a criterion due to contribution of Drcuzenouic 1969, are retained to a limited extent only. Hajor drawback of this approach, utilizing the facilitating fact of B(CB)^C being a projector such that disturbances or parameter variations belong to the range space of input matrix B, is that the extent of the robustness is not determined. In this paper, quantitative measures are introduced for assessing the extent of lack of robustness. Method is based on singular value analysis of closed-loop state matrix F in sliding mode introducing the simple stability criteria.
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