National Repository of Grey Literature 112 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Energetic model of linear axis with ball screw and servodrive
Sládek, Vojtěch ; Tůma, Jiří (referee) ; Huzlík, Rostislav (advisor)
The aim of the thesis was to study the Energy Models of Linear Axes with Ball Screws and Servo Drives, to analyze the individual parts of the axis with respect to losses, the methodology of calculating the losses on the electrical part and the mechanical part of the drive and creating a complex algorithm that calculates the energy consumed for the specified motion. The thesis is divided into a theoretical and practical part, where the theoretical part is divided into the treatise on the electrical part of the axis and its losses and the part that deals with the mechanical part and its losses. The calculation is divided into the basic verification algorithm and the calculation on the given example. Each calculation is calculated for both linear acceleration and S-curve acceleration. For both types of acceleration, the result of energy and its course over time is also the waveforms of position, velocity, acceleration, angular acceleration, moments, powers, power, speed and currents over time.
Design of test stand for servodrive loading
Gricman, Roman ; Pavlík, Jan (referee) ; Huzlík, Rostislav (advisor)
This master’s thesis is focused on a design of test stand for servodrives loading. The theoretical part analyses state of art of load testing systems and describes main parts of workplaces. In the practical part is design of mechanical construction of workplace and electrical parts of machine. Master’s thesis also includes verification of properties of mechanical assembly and safety functionality verification.
Design of modification of commercial 3D printers
Klement, Jakub ; Zuth, Daniel (referee) ; Huzlík, Rostislav (advisor)
The purpose of this thesis is to propose improvements to commercial printer ZPrinter 650. The thesis is divided into several parts. The first part describes the propellant components of 3D printers in general with focus on their engines. The second part describes the assigned 3D printer ZPrinter 650, also including photographs. The final part then proposes some improvements to make the printing cheaper.
Device for mechanical loading of samples
Rachůnek, Radek ; Zuth, Daniel (referee) ; Huzlík, Rostislav (advisor)
The aim of this work is to design and construct a device that will allow loading of the sample during irradiation at the tomographic test. The first part deals with the description of electromagnetism and the elements that use it to induce motion. Furthermore, the work describe similar devices used for the same purposes and a brief description of the electronic components utilized for the operation of the device. The conclusion is devoted to the design, manufacture and commissioning of equipment for mechanical loading of samples
Indirect vibration analysis using a mobile phone microphone
Plodková, Zuzana ; Huzlík, Rostislav (referee) ; Zuth, Daniel (advisor)
The bachelor thesis deals with the possibility of using a recorded signal from a mobile phone for vibration analysis. The first half of the thesis is a research generally dedicated to microphones, microphones in mobile phones and technical diagnostics. The chapter about microphones discusses the principle of their operation, further it analyzes the most important technical parameters and finally divides microphones according to their construction. In case of microphones in mobile phones there is mentioned the most commonly used type of microphone and its structure including a description of possible sound filtration. Possible ways and approaches to processing the measured signal are mention in the chapter abou technical diagnostics. The second part of the thesis is devoted to repeated measurement and subsequent processing of measured values. An evaluation of efficiency of the method of measuring the signal with a mobile phone for vibration analysis by comparison with the results obtained by a professional measuring technique follows.
Use of sensors in automation
Kiza, Jakub ; Huzlík, Rostislav (referee) ; Blecha, Radim (advisor)
This bachelor thesis contains a summary and conclusion of technical conditions of industrial sensors in the automatization field. The objective of this thesis is to analyze industrial sensors and subsequently list possibilities of their utilization in the automatization. This analysis was performed based on particular kind of sensors which were divided in accordance to their physical qualities. As a result of acquired research regarding principles and function of these sensors, it is possible to specify the essential advantages and disadvantages of the sensors. This acquired research allows for accurate usage and implementation of sensors in the engineering practice. Therefore, this thesis offers a summary of sensor information which can assist a reader to choose the proper sensor for particular applications.
Využití bezpečnostních senzorů v automatizaci
Miklis, Peter ; Huzlík, Rostislav (referee) ; Blecha, Radim (advisor)
The aim of this bachelor thesis is to get acquainted with safety issues in automation and use of safety sensors, which are currently on the market. The first part discusses the importance of safety in industry and the essence of safety standards. The second part deals with the division of types of safety sensors, their functional principles, advantages and usage. The final section contains a list of important companies behind the development and production of safety sensors.
Proposal of  autonomous source for measurement unit on the rotor of the electric machine
Kura, Ondřej ; Huzlík, Rostislav (referee) ; Vlach, Radek (advisor)
This thesis describes the design and the subsequent construction of the autonomous power supply for the wireless temperature measuring unit, which is placed on the rotor of the electric machine. The theoretical part of this work is devoted to the description of methods in the field of energy harvesting and the subsequent implementation of one of these possibilities on the given issue. Furthermore, there is a design of mechanical and electrical parts of the source for the selected solution. In the practical part is the realization of the created design with the final measurement of source parameters.
Smart materials for actuators
Brehovský, Patrik ; Hadaš, Zdeněk (referee) ; Huzlík, Rostislav (advisor)
The bachelor’s thesis “Smart materials for actuators” deals with appropriate use materials, named smart, in actuators. At the beginning, the thesis completes requests about actuators, which we need to set before making project. Next part is about the research of smart materials suitable used in actuators. The thesis continues with description of few more interesting smart materials. Thesis is ended with summary, which material is suitable to use for few selected projects and why.
Cooling and lubrication of rotating ball nuts
Dočekal, Václav ; Huzlík, Rostislav (referee) ; Marek, Jiří (advisor)
Diploma thesis deals with a topic of lubrication and cooling of the ball screw rotary nuts. The first part is focused on a research behind the theory of ball screws and ball screw rotary-nuts. The three types of construction were developed in the second half of the thesis. Each construction is designed as an external attachable cooling and lubrication unit, which can be installed on an existing, slightly modified ball screw rotary-nut. For cooling and lubrication, only one type of medium is used and that is a cooled oil. External unit provides medium flow to ball screws working space. On top of diploma thesis tasks a design concept of ball screw rotary-nut with an integrated cooling and lubrication is introduced itself. Both described designs could become interesting for an industrial market.

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