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Measurement of internal combustion engine performance on a chassis dynamometer
Farka, Jan ; Ramík, Pavel (referee) ; Štětina, Josef (advisor)
Since the beginning of the automotive industry, a lot of years have passed and the characteristics of vehicles and all its components, especially the engine, are being given greater and greater emphasis both in terms of safety, performance and ecology. The performance of the internal combustion engine, along with a number of other vehicle features, is measured on chassis dynamometers. The aim of the thesis is to describe and analyse the dynamometers produced, the tests performed on them and also to measure the performance of the internal combustion engine on the chassis dynamometer. In conclusion, the assessment of the impact of tests on the automotive industry is just mentioned.
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Traction Drives with Asynchronous Motors
Běloušek, Josef ; Skala, Bohumil (referee) ; Richter, Aleš (referee) ; Patočka, Miroslav (advisor)
The first part of this work is devoted to the design of a traction asynchronous motor. The second part focuses on the developed method of the equivalent circuit parameters identification of the asynchronous motor in the form of -network. It is explained here that the equivalent circuit in the shape of a -network, alternatively of an inverse 'I-network, is exactly equivalent and fully-fledged to a T-network, although one of two stray inductances is formally missing. Furthermore, the relationships for the conversions of the T-network parameters to the -network parameters and back, and of the T-network to the inverse 'I-network and back are found. The third part deals with the calculation of the torque and the current characteristics of the asynchronous motor. A sensitive analysis of the torque characteristic is carried out on the individual parameters of the equivalent circuit of the asynchronous motor in the form of a -network and a method of the measurement by means of a flywheel is used for the torque characteristic measurement of the asynchronous motor. The fourth part focuses on the verification of the identified -network parameters in the Matlab-model of the traction drive.
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Measurement of changes in the inclination of the Velký Kosíř lookout tower structure due to the influence of wind stress
Smetana, Jonáš ; Bárta, Ladislav (referee) ; Bureš, Jiří (advisor)
This thesis deals with the issue of displacements and deformations of building constructions. Specifically, it deals with changes in the inclination of the Velký Kosíř lookout tower structure due to wind stresses. The first part of the thesis deals with the theoretical description of the issue of displacements and deformations of buildings and measurement methods. The second part presents the testing of the geodetic method used for dynamic measurement. This involves setting up a total station in an automatic tracking mode and aiming a reflecting prism. The third part then deals with the actual measurement of the lookout tower Velký Kosíř, evaluation of the stage measurement, interpretation of the results and comparison of the methods used. These methods are represented by the polar method in a standard mode and the polar method in the mode of automatic tracking of the reflection prism and measurements of dynamic acceleration using accelerometer. The final objective is an evaluation of the inclinations under given wind conditions and the evaluation of the lookout tower inclination in the long term.
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Measurement of camber during driving
Vojtěšek, Aleš ; Fojtášek, Jan (referee) ; Porteš, Petr (advisor)
The subject of this master's thesis is design measurement and measure change wheel camber angle during driving. For this task were used parts from Corrsys-Datron and remaining elements needed to be manufactured. With complete system measurements were done and outputs data were displayed by Matlab and evaluated. Based on data evaluation is possible exactly determine relative position of the wheel to the road surface and to the body of vehicle.
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Measurement of changes in the inclination of the Velký Kosíř lookout tower structure due to the influence of wind stress
Smetana, Jonáš ; Bárta, Ladislav (referee) ; Bureš, Jiří (advisor)
This thesis deals with the issue of displacements and deformations of building constructions. Specifically, it deals with changes in the inclination of the Velký Kosíř lookout tower structure due to wind stresses. The first part of the thesis deals with the theoretical description of the issue of displacements and deformations of buildings and measurement methods. The second part presents the testing of the geodetic method used for dynamic measurement. This involves setting up a total station in an automatic tracking mode and aiming a reflecting prism. The third part then deals with the actual measurement of the lookout tower Velký Kosíř, evaluation of the stage measurement, interpretation of the results and comparison of the methods used. These methods are represented by the polar method in a standard mode and the polar method in the mode of automatic tracking of the reflection prism and measurements of dynamic acceleration using accelerometer. The final objective is an evaluation of the inclinations under given wind conditions and the evaluation of the lookout tower inclination in the long term.
|
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Measurement of internal combustion engine performance on a chassis dynamometer
Farka, Jan ; Ramík, Pavel (referee) ; Štětina, Josef (advisor)
Since the beginning of the automotive industry, a lot of years have passed and the characteristics of vehicles and all its components, especially the engine, are being given greater and greater emphasis both in terms of safety, performance and ecology. The performance of the internal combustion engine, along with a number of other vehicle features, is measured on chassis dynamometers. The aim of the thesis is to describe and analyse the dynamometers produced, the tests performed on them and also to measure the performance of the internal combustion engine on the chassis dynamometer. In conclusion, the assessment of the impact of tests on the automotive industry is just mentioned.
|
|
|
Traction Drives with Asynchronous Motors
Běloušek, Josef ; Skala, Bohumil (referee) ; Richter, Aleš (referee) ; Patočka, Miroslav (advisor)
The first part of this work is devoted to the design of a traction asynchronous motor. The second part focuses on the developed method of the equivalent circuit parameters identification of the asynchronous motor in the form of -network. It is explained here that the equivalent circuit in the shape of a -network, alternatively of an inverse 'I-network, is exactly equivalent and fully-fledged to a T-network, although one of two stray inductances is formally missing. Furthermore, the relationships for the conversions of the T-network parameters to the -network parameters and back, and of the T-network to the inverse 'I-network and back are found. The third part deals with the calculation of the torque and the current characteristics of the asynchronous motor. A sensitive analysis of the torque characteristic is carried out on the individual parameters of the equivalent circuit of the asynchronous motor in the form of a -network and a method of the measurement by means of a flywheel is used for the torque characteristic measurement of the asynchronous motor. The fourth part focuses on the verification of the identified -network parameters in the Matlab-model of the traction drive.
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Measurement of camber during driving
Vojtěšek, Aleš ; Fojtášek, Jan (referee) ; Porteš, Petr (advisor)
The subject of this master's thesis is design measurement and measure change wheel camber angle during driving. For this task were used parts from Corrsys-Datron and remaining elements needed to be manufactured. With complete system measurements were done and outputs data were displayed by Matlab and evaluated. Based on data evaluation is possible exactly determine relative position of the wheel to the road surface and to the body of vehicle.
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