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Sensorless position control of solenoid valve
Keprt, Jaroslav ; Janák, Luděk (referee) ; Houška, Pavel (advisor)
This thesis deals with the determination of the position of the solenoid core in real time based on the measured current. The reference position of the current is used for feedback control of the solenoid. For this issue, software tool Matlab/Simulink was used. For current and temperature measurements, PCB circuits were created. The whole project was carried out on the dSPACE platform.
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Design of special purpose tool for sag measurement
Mejzlík, Jiří ; Vetiška, Jan (referee) ; Houška, Pavel (advisor)
The aim of the thesis is to design a special purpose tool for sag measurement. Three possible solutions are proposed, for each the production cycle time is calculated and its approximate costs are estimated. The best solution in terms of a trade-off between both key quantities is suggested. Next part of the work deals with the selection of suitable drives for the manipulator as well as of the other components for the whole electrical device. Finally, a possible automated control of the complete machinery, including the electrical wiring diagram, is presented.
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Driver design for PROFINET bus coupler
Kroupa, Jiří ; Šubrt, Kamil (referee) ; Houška, Pavel (advisor)
The essence of this diploma thesis is the design and implementation of driver for Profinet bus coupler from Phoenix Contact, which use computer's network card for communication. The proposal builds on the knowledge gained from available literature and analysis of Profinet protocol.
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Design of software single purpose machine for manufacturing test
Janoušek, Roman ; Šubrt, Kamil (referee) ; Houška, Pavel (advisor)
This diploma thesis deals with design and implementation of software for control of manufacturing tests of pneumatic proportional valve Festo MPYE. The single-purpose testing device consists of a DAQ device, a pressure sensor and of electrically operated pneumatic valves. In the introduction of this thesis are outlined aims of thesis followed by introduction to single-purpose assemblies commonly used in practice. The main part of this thesis deals with analysis and with solving the issues of assigned product testing. The designed and implemented modular software for control of manufacturing tests of assigned product is presented as an outcome and this software is easily adjustable for tests of a different product. In the conclusion are assessed achieved aims.
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Control of special purpose machine tool
Plocek, Jaroslav ; Holub, Michal (referee) ; Houška, Pavel (advisor)
The master thesis treats the design of control system of special purpose machine tool. The first part analyzes and compares two possible variants of control system which use either a CNC control system Sinumerik or motion control system Simotion. Only the variant with the Simotion control system is subsequently examined in detail: its hardware configuration, the selection of components and partly also the software solution. The thesis further deals with the safety of the realized control system and of the whole machine. There are described general safety requirements of machinery based on harmonized European standards and their specific application in the design of safety functions and the safety circuits of solved machine tool.
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The control system of the combustion system EKOGEM
Holešovský, Petr ; Lisý, Martin (referee) ; Houška, Pavel (advisor)
This master´s thesis deals with automatic control of solid fuel boiler. Main goal of this thesis is to design control system for combustion system EKOGEM. In this thesis is introduced combustion system and its designed control. Thesis describes realization of control system and presents results, in which shows its benefits for combustion system. Control system is realized in NI LabVIEW environment.
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Energy efficient hydraulic system design for force loading of vehicle drivetrain systems
Robenek, Vít ; Ožana, Otakar (referee) ; Houška, Pavel (advisor)
The thesis focuses on a hydraulic system design for a specific application of hydrostatic drive with regard to energy efficiency of proposed solution. Standard hydraulic and electronic components are used, mostly products of Bosch Rexroth. The aim of the thesis is to carry out a complex design from mechanic through hydraulic up to the electronic part of the system. After a short introduction in the beginning of the thesis is the particular application described and analyzed. Then the elemental principles of hydraulic devices and systems are explained. In the following part the actual solution is presented, which expands to several different alternatives. These alternatives are compared according to set criteria and the selected alternative is then further developed. At the end of the thesis, the outputs are evaluated and the direction of further possible improvements in the design is outlined.
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Measurement and analysis of dynamic properties of rotating machine parts
Gofroň, Vojtěch ; Hadaš, Zdeněk (referee) ; Houška, Pavel (advisor)
Diploma thesis focuses on measurement and analysis of shaft motion, torque, angular velocity and vibration. First part of the thesis deals with general issue of acquiring a digital signal. Next part describes suitable sensors for each measurement type, and data acquisition hardware. The last theoretical part describes methods for measurement data analysis and vibration diagnostics. Practical part of the thesis describes shaft motion and torque measurements made on laboratory equipment, and vibration measurement made on real machine system. Each measurement includes measurement data analysis and evaluation.
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Precision and dynamics of linear piezo motors
Ilichman, Ondřej ; Vaške, František (referee) ; Houška, Pavel (advisor)
The work deals with the design, control, precision and dynamics of linear piezoelectric motors from PiezoMotor Uppsala AB. The aim of this thesis is to evaluate the applicability of the loaned engine in a mass spectrometer. In introduction‘s section of this work is discussing the design principles of functionality, materials used, procedure and types of piezoelectric motors. It focuses the choice of hardware and design of mechanical assemblies, which could replace the current mechanism with electromagnetic motors. Then we designed and fabricated a test report with hired piezoelectric motor. In NI LabView development environment is created test application for control and measurement. The final section is devoted to a summary of the positive and negative features of the hired piezoelectric motor and evaluation of accuracy and dynamics.
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Design of instrument for the analysis of crack initiation and propagation
Šubrt, Stanislav ; Andrš, Ondřej (referee) ; Houška, Pavel (advisor)
The main goal of this thesis is to get an insight into a field of non-destructive testing using potential drop techniques that have nowadays become the standard not only in the fatigue and loading tests but also in the industry. These methods can serve to non-destructively and continuously measure material specimens, thickness, corrosion losses, deformations, spectroscopy and detection and analysis of crack geometry. They can help to identify materials and measure material changes over time. The second part of this thesis deals with designing the aperture for detection of cracks in steam and product piping using potential drop technique modified by Ing. Ladislav Korec, CSc. Last part deals with extensive testing, experimenting and evaluation of the aperture.
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