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Temperature control in bioreactor
Pospíchal, Zbyněk ; Václavek, Pavel (referee) ; Blaha, Petr (advisor)
This thesis deal with improvement behavior of temperature control in bioreactor. It was created model of system. Basic PI controller could solve all problems. After analysis of system were decided to used fuzzy controller. Fuzzy controller in comparison with classic PI controller has better behavior in this application.
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Accurate positioning of pneumatic drives
Volf, Marek ; Nevrlý, Josef (referee) ; Marada, Tomáš (advisor)
Thesis starts with brief overview of the present role of pneumatic actuators. Further research is carried out in modelling and control of pneumatic actuators. A basic overview of thermodynamic laws is presented. These laws are used to assemble a mathematical model of the pneumatic drive. Subsequently the identification of model parameters is shown. A controller is propřed using fuzzy PID algorithms. Results are compared with the conventional PID controller.
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Fuzzy Controller Optimization in PLC
Piskoř, Dominik ; Jirgl, Miroslav (referee) ; Arm, Jakub (advisor)
This diploma thesis deals with the search for optimization methods suitable for fuzzy controller optimization. The next goal of this thesis is the manual design of the Mamdani fuzzy controller, off-line optimization of the designed fuzzy controller, and the testing of the optimized controller by controlling a real system. The real system is a model of the wind tunnel, which is consisted of a fan, a tube, and a small turbine placed on a shaft of a rotary encoder. This rotary encoder is used as a sensor. The last part of this thesis is a comparison of the achieved results with a linear controller, which is optimized according to the given criterion.
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A Fuzzy Controller for a Wind Tunnel Model
Piskoř, D. ; Mihálik, O. ; Sýkora, T. ; Arm, J.
In this paper, an alternative approach to control the model of the wind tunnel is proposed. The aim is to find out if it is possible to achieve better results in regulating a system containing nonlinearities when a fuzzy controller is used instead of common linear controllers. The designed fuzzy controller will be implemented into a PLC via automatic code generation in MATLAB later.
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Fuzzy Controller Optimization in PLC
Piskoř, Dominik ; Jirgl, Miroslav (referee) ; Arm, Jakub (advisor)
This diploma thesis deals with the search for optimization methods suitable for fuzzy controller optimization. The next goal of this thesis is the manual design of the Mamdani fuzzy controller, off-line optimization of the designed fuzzy controller, and the testing of the optimized controller by controlling a real system. The real system is a model of the wind tunnel, which is consisted of a fan, a tube, and a small turbine placed on a shaft of a rotary encoder. This rotary encoder is used as a sensor. The last part of this thesis is a comparison of the achieved results with a linear controller, which is optimized according to the given criterion.
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Accurate positioning of pneumatic drives
Volf, Marek ; Nevrlý, Josef (referee) ; Marada, Tomáš (advisor)
Thesis starts with brief overview of the present role of pneumatic actuators. Further research is carried out in modelling and control of pneumatic actuators. A basic overview of thermodynamic laws is presented. These laws are used to assemble a mathematical model of the pneumatic drive. Subsequently the identification of model parameters is shown. A controller is propřed using fuzzy PID algorithms. Results are compared with the conventional PID controller.
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Temperature control in bioreactor
Pospíchal, Zbyněk ; Václavek, Pavel (referee) ; Blaha, Petr (advisor)
This thesis deal with improvement behavior of temperature control in bioreactor. It was created model of system. Basic PI controller could solve all problems. After analysis of system were decided to used fuzzy controller. Fuzzy controller in comparison with classic PI controller has better behavior in this application.
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Fuzzy pressure controller for helium bath cryostats
Hanzelka, Pavel ; Jura, P.
Pressure stability of about 10 Pa/h is necessary for precise measurementsof the helium evaporation rate of the low loss cryostats. A pressure controller fulfilling this requirement was designed and tested. It consists ofan absolute pressure sensor, an electronic fuzzy controller and a proportional electromagnetic valve. Computer simulation of the system behaviour was used for the controller tuning. The minimization of the final deviationwas preferred to the reaction speed. The operational properties of the controller were verified at the tests of a helium dewar. The controller was utilised at the development of a small helium cryopump.
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