|
|
PC Controlled PLL Synthesizer
Málek, Miroslav ; Šrámek, Petr (referee) ; Vágner, Petr (advisor)
The aim of this bachelor´s thesis is a practical realization of computer controlled PLL synthesizer using USB serial port. FT232RL was used as an interface between the PLL synthesizer ADF4110 and PC. A software with graphical user interface was also developed in order to control registers of the syntesizer.
|
|
|
Using Time Series Analysis to Evaluate Company Efficiency
Sedmera, Tomáš ; Málek, Miroslav (referee) ; Doubravský, Karel (advisor)
The thesis focuses on assessing economic health of Agro Zvole, a.s. company, operating in the agricultural sector, producing plant and animal production. For objective evaluation of economic performance financial analysis indicators are used, to also work with statistics, represented by timeline analysis technique. Both previous numerical procedures (methodology) are based on company financial statements for each fiscal period. To be specific, individual indicators of financial analysis from the financial statements (profit and loss account and balance sheet) are calculated for each fiscal period and these are then aligned using time lines and future trends prediction (development). The individual results are accompanied by commentaries. To create the right comments, resulting from arithmetic operations, it is useful to compare individual results with management of other corporate entities within a single sector of the economy and their respective area. That is why other agricultural companies from former Žďár nad Sázavou district are included in the research as they follow: Agria Ujčov, a.s., Bobrovská, a.s. and Bohuňov Company, a.s. Previous research conclusions based on results of comparing the management of Agro Zvole, a.s. with managements of other companies are used to discover gaps of Agro Zvole, a.s. management. Next section of the thesis is devoted to model my own proposals to eliminate or at least alleviate problematic conditions in the company's performance. It is important to find mistakes, but more importantly find a way to eliminate them. In conclusion, the thesis summarizes the results of each part of the work and its benefits are outlined for the referenced entity.
|
|
|
Unsteady CFD simulation of flow under a downward moving gate
Málek, Miroslav ; Štefan, David (referee) ; Klas, Roman (advisor)
Emergency gates are important safety feature of hydropower plants. They are used to close the flow in order to protect power plant equipment in case of emergency. In this diploma the-sis are realized CDF simulations of emergency closure of wheel-mounted gate on two-dimensional model of the Slapy hydropower plant. Simulations were performed for the case of constant lowering gate speed and for the case of gravitational closure. Dynamic mesh was used to enable the gate motion. The 6DOF method was used for the case of gravitational clo-sure and user defined function was defined to control movement of the gate. User defined function include gravitational force, hydrodynamic forces and friction force. Simulations were used to verify forces acting on gate and volume flow through gate during closing process. In case of gravitational closure the speed and orientation of closing process and closing process time were determined.
|
|
|
KINECT for controlling of mobile robot
Málek, Miroslav ; Brejl, Milan (referee) ; Fedra, Zbyněk (advisor)
This project deals with design of a mobile robot controlled by MS Kinect. The movement of the robot is driven by depth data which is processed with a suitable ARM processor. There is a module designed for serial communication between the processor and the robot chassis. For user computer and ARM processor there are developed software applications to control each part of the robot as well. Finally, this project contains form of the built robot controlled by an ARM processor software. The robot has the ability of controlled movement between obstacles. This allows the robot to not come into contact with any obstacle.
|
|
|
Pneumatic cylinder
Málek, Miroslav ; Štefan, David (referee) ; Klas, Roman (advisor)
Bachelor thesis contains description and categorization of pneumatic actuators, main part is devoted to linear pneumatic motors, their design and description of individual parts of the motor with respect to its function. Part of this thesis is devoted to buckling stability of the piston rod and brief description of the parts in the pneumatic circuit. Next part of the thesis is deals with description of mathematical model of pneumatic cylinder, which results in simulation of variables describing the operation of the motor. Simulation has been done on double-acting and single-acting pneumatic cylinder with return spring. This mathematical model also includes a friction force model.
|
|
|
Unsteady CFD simulation of flow under a downward moving gate
Málek, Miroslav ; Štefan, David (referee) ; Klas, Roman (advisor)
Emergency gates are important safety feature of hydropower plants. They are used to close the flow in order to protect power plant equipment in case of emergency. In this diploma the-sis are realized CDF simulations of emergency closure of wheel-mounted gate on two-dimensional model of the Slapy hydropower plant. Simulations were performed for the case of constant lowering gate speed and for the case of gravitational closure. Dynamic mesh was used to enable the gate motion. The 6DOF method was used for the case of gravitational clo-sure and user defined function was defined to control movement of the gate. User defined function include gravitational force, hydrodynamic forces and friction force. Simulations were used to verify forces acting on gate and volume flow through gate during closing process. In case of gravitational closure the speed and orientation of closing process and closing process time were determined.
|
|
|
Pneumatic cylinder
Málek, Miroslav ; Štefan, David (referee) ; Klas, Roman (advisor)
Bachelor thesis contains description and categorization of pneumatic actuators, main part is devoted to linear pneumatic motors, their design and description of individual parts of the motor with respect to its function. Part of this thesis is devoted to buckling stability of the piston rod and brief description of the parts in the pneumatic circuit. Next part of the thesis is deals with description of mathematical model of pneumatic cylinder, which results in simulation of variables describing the operation of the motor. Simulation has been done on double-acting and single-acting pneumatic cylinder with return spring. This mathematical model also includes a friction force model.
|
|
|
PC Controlled PLL Synthesizer
Málek, Miroslav ; Šrámek, Petr (referee) ; Vágner, Petr (advisor)
The aim of this bachelor´s thesis is a practical realization of computer controlled PLL synthesizer using USB serial port. FT232RL was used as an interface between the PLL synthesizer ADF4110 and PC. A software with graphical user interface was also developed in order to control registers of the syntesizer.
|
|
|
Using Time Series Analysis to Evaluate Company Efficiency
Sedmera, Tomáš ; Málek, Miroslav (referee) ; Doubravský, Karel (advisor)
The thesis focuses on assessing economic health of Agro Zvole, a.s. company, operating in the agricultural sector, producing plant and animal production. For objective evaluation of economic performance financial analysis indicators are used, to also work with statistics, represented by timeline analysis technique. Both previous numerical procedures (methodology) are based on company financial statements for each fiscal period. To be specific, individual indicators of financial analysis from the financial statements (profit and loss account and balance sheet) are calculated for each fiscal period and these are then aligned using time lines and future trends prediction (development). The individual results are accompanied by commentaries. To create the right comments, resulting from arithmetic operations, it is useful to compare individual results with management of other corporate entities within a single sector of the economy and their respective area. That is why other agricultural companies from former Žďár nad Sázavou district are included in the research as they follow: Agria Ujčov, a.s., Bobrovská, a.s. and Bohuňov Company, a.s. Previous research conclusions based on results of comparing the management of Agro Zvole, a.s. with managements of other companies are used to discover gaps of Agro Zvole, a.s. management. Next section of the thesis is devoted to model my own proposals to eliminate or at least alleviate problematic conditions in the company's performance. It is important to find mistakes, but more importantly find a way to eliminate them. In conclusion, the thesis summarizes the results of each part of the work and its benefits are outlined for the referenced entity.
|
|
|
KINECT for controlling of mobile robot
Málek, Miroslav ; Brejl, Milan (referee) ; Fedra, Zbyněk (advisor)
This project deals with design of a mobile robot controlled by MS Kinect. The movement of the robot is driven by depth data which is processed with a suitable ARM processor. There is a module designed for serial communication between the processor and the robot chassis. For user computer and ARM processor there are developed software applications to control each part of the robot as well. Finally, this project contains form of the built robot controlled by an ARM processor software. The robot has the ability of controlled movement between obstacles. This allows the robot to not come into contact with any obstacle.
|
guest ::
RSS feed.