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Torsional stiffness of Formula Student frame
Jurnečka, Ladislav ; Ramík, Pavel (referee) ; Porteš, Petr (advisor)
Diploma thesis deals with detection of torsional stiffness with using photogrammetric equipment TRITOP device and subsequent comparison with created computational model in FEM software. Measurement and calculations were accomplished according to tutorials, which are the most effective and giving the most accurate results. Next the optional method of measurement of torsional stiffness in practice is formed for future formula series called Dragon. The reasons of different results and suggestion of optimalization are sum up in the end of the thesis.
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Automation of optical measuring via TRITOP optical coordinate system
Koutecký, Tomáš ; Růžička, Bronislav (referee) ; Volek, Aleš (advisor)
The goal of this diploma thesis is to automate photogrammetric measuring system TRITOP. In the literature retrieval part there is a review of digitizing methods and its description. Further it contains a description of the photogrammetric system TRITOP role. The practical part of the thesis deals with methodology of the TRITOP measurement and evaluation process automation. Automation is then verified on a practical example.
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Measurement of Vehicle CG Height Position
Fedra, Tomáš ; Hejtmánek, Petr (referee) ; Blaťák, Ondřej (advisor)
This diploma thesis deals with measurement of vehicle centre of gravity height position. All methods for measurement of CG height position are described in the first part. The second part deals with designing of device for measurement of CG height. This measurement device is analysed by Finite Element Method. The vehicle is tilt by hydraulic system. The third part shows the best tilt angle for minimal error of CG height. At the end, there is described a measuring procedure for designed device.
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The theoretical and actual measurement accuracy of TRITOP photogrammetry system
Klus, Patrik ; Mendřický, Radomír (referee) ; Zatočilová, Aneta (advisor)
This diploma thesis examines the impact of selected factors on the measurement accuracy of Tritop photogrammetry system and verifies the validity of theoretical predictive formulas. Primary attention is given to factors that are easily influenced by the inspector - namely number of captured images, shooting distance, number of scale bars and number of coded targets. In addition, experiments dealing with the measurement automation and the use of external color filter are also described in this thesis. Seven scale bars placed on a jig of cube shape were subject of the measurements (according to VDI/VDE 2634 standard). Two approaches were used in order to obtain measurement deviations – reference values, from which the measured data were subtracted to obtain deviations, were known due to the use of scale bars. Second approach consisted in evaluation of deviations from software Tritop Professional. The results showed that the number of photographs and shooting distance have the greatest impact on measurement accuracy of Tritop system. The accuracy was also influenced by number of coded targets in the scene or by use of the external green filter. Measured data were compared to the values obtained from predictive formulas. The results showed that the formula defined by the GOM company has a prediction accuracy of more than 96 %. However the formula is dependent on the input parameter called “Image accuracy” for which the value recommendations are made in this work. The results of this work can help predict measurement uncertainties more precisely and optimize the measurement methodology of Tritop photogrammetry system.
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Method for evaluation accuracy of milling robots
Cabalka, Jan ; Slaný, Martin (referee) ; Zouhar, Jan (advisor)
This thesis describes the design of methodology for measuring the accuracy of robot machining. It describes the theoretical properties and classification of commercially available methods for precision measurement. In the practical part, a test workpiece is manufactured and positions and toolpaths are measured by the Pontos system. The proposals are based on the MCAE Systems company's equipment.
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Measurement of Inertia properties of bodies for the purpose of mathematical modeling of vehicle dynamics
Dvořák, Karel ; Laurinec, Marián (referee) ; Porteš, Petr (advisor)
The aim of the diploma thesis is to create a concept of methods that can be used for measurement of important mechanical inertia properties of bodies -- the coordinates of center of gravity and the the moment of inertia tensor, in case we don't have 3D model of these bodies. The thesis divides this problem into several sub-problems and suggests the solutions for each of them. Required equipment was created and measurement was carried out. At the end the measured values are compared with the teoretical ones and accuracy of this method is determined.
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Measurement of the suspension flexibility
Suchý, Jan ; Zháňal, Lubor (referee) ; Porteš, Petr (advisor)
The thesis is focused on the method of determining the position of the wheel using photogrammetric equipment Tritop. Verification of the method is performed by measuring of the Formula Student Dragon II. Measured data are processed by algorithm for calculating compiled in Matlab software. The final section describes a concept the measurement of the suspension flexibility on the UADI device.
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Suspension Kinematics Points Measurement with Use of Measurement Device Tritop
Fišer, Radoslav ; Svída, David (referee) ; Blaťák, Ondřej (advisor)
Bc. Radoslav Fišer Suspension kinematics points measurement with use of measurement device Tritop MT, IAE, 2008, sites 58, pictures 45 We compare methods of obtaining input data for sotwares simulating kinematic and dynamic characretistics of vehicle suspension. Digitizing system working with three dimensional coordinates Tritop and Atos is used for measurement. With repeated measuring we investigate accuracy, time hefftines and suitability of methods for car suspension mesurement. Special targest were developed to use with Tritop device measurement.
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Calibration of GOM ATOS optical coordinate measuring machines
Košťák, Ondřej ; Jankových, Róbert (referee) ; Harčarík, Matej (advisor)
This master’s thesis contains the basic division of 3D methods which are used for reconstruction of measured objects. Furthermore the types of structured light patterns used for 3D triangulation. It also contains a description of the construction and functions of GOM ATOS and TRITOP machines. Primarily the thesis deals with the calibration of these machines, the design of suitable materials standard of size and the internal calibration methodology used by ŠKODA AUTO a.s. The text also includes verification of the proposed calibration procedure in practice, proposal for determination of calibration uncertainties and recommendations for practice.
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