• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 40
  • 6
  • 2
  • 1
  • Tagged with
  • 49
  • 30
  • 26
  • 7
  • 7
  • 7
  • 6
  • 6
  • 6
  • 6
  • 5
  • 5
  • 5
  • 5
  • 5
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

Metodika oceňování elektromobilů a vozidel s hybridním pohonem / Methodology of electromobile and hybrid vehicle valuation

Kosek, Roman January 2016 (has links)
Thesis Methodology of electromobile and hybrid vehicle valuation focuses on these types of vehicles and their specifics in terms of valuation. It attends to the current state of technological advancement in this field, the structural differences from conventional vehicles and the current valuation methods. The aim is to propose a methodology for the valuation of this types of vehicles and its subsequent application to concrete examples.
22

Ein Projekt mit Spannung: Die Forschung am Elektromobil an der Technischen Hochschule Karl-Marx-Stadt

Mittag, Michelle 04 October 2017 (has links)
Michelle Mittag resümiert in ihrem Artikel die Forschung an der Elektromobilität, welche an der Technischen Hochschule Karl-Marx-Stadt während der DDR-Zeit betrieben wurde.
23

Polohové řízení solárního panelu s optimalizací energetické účinnosti / Positioner for Solar Panel with Power Efficiency Optimizing

Kreysa, Karel January 2011 (has links)
This thesis is focused on design and prototyping of solar panel position control system for an obtaining of the maxima renewable energy from sun. In this thesis, various ways of solar panel positioning are considered and analyzed. Consequently, a construction arrangement of the positioner is presented. It is mechanically adapted to obtain the maximum efficiency in typical environment corresponding with the Central European geographical latitude. Different methods of sun monitoring are considered and analyzed. On the basis of this analysis, a proper prototype of sun monitor for exact positioning with disturbance filtering has been constructed. Following part of work is devoted to stable, fully automated, control subsystem for reliable functionality of solar system. A suitable microprocessor with a robust firmware has been implemented to this control unit. Finally, system parameters measurement and closing analysis of gained renewable energy and backflow computation is presented in the end of this diploma thesis.
24

Modelování lineárního pohonu s DC motorem pro potřeby řízení / Modelling of linear power drive with DC motor for control purposes

Vrbka, Michal January 2009 (has links)
In my diploma thesis, I developed the model of a linear actuator for the control purposes. The first part summarizes the literature research of currently available linear actuator systems. The work further describes some of the capabilities of the simulation environment Matlab which was used for the creation of the computer model of linear actuators. In the last part, this theoretical model is compared with already available physical model of the system.
25

Implementace moderních metod řízení jakosti ve výrobě elektromotorů. / Implementation of modern quality control methods in production of electromotors.

Řídký, Václav January 2009 (has links)
ANNOTATION Václav Řídký Implementation of modern quality control metods in production of electromotors Diploma thesis, Institute of metrology and quality assurance testing, UT FME, Brno This diploma thesis deals with problems of reducing the complaints quota in production of electromotors to acceptable level. This work includes analysis of faults, presentation of single faults and instituted measures leading to the elimination their inception.
26

Návrh dálničniho osobního vozidla na elektrický pohon / Design Study of Highway Electrical Passenger Car

Přikryl, Karel January 2011 (has links)
This thesis deals with design concept of the electric car. At first, vehicle dynamics was solved in program MathCad. The components were selected from the obtained results. This was followed by a proposal layout design and vehicles main dimensions design. The frame was created in program ProEngineer, and then imported into ANSYS. Simulation of torsional rigidity was made in ANSYS by FEM.
27

Návrh výkonové, řídicí a měřicí elektroniky elektrické brzdy s EC motorem / Design of power, control and measurement electronics for an electric brake with a BLDC motor

Drbohlav, Jan January 2013 (has links)
This paper describes the design of control, measurement and power electronics department for dynamic loading of electronically commutated motors with electric brakes. After comparing the advantages and disadvantages of possible conceptions the proposal focuses on electric brake operating in generator mode and the value of load is controlled by the current dissipated in a dummy load.
28

Návrh konstrukce vibrační třídičky odpadu / Design of vibrating waste sorter

Taska, Abraham January 2016 (has links)
The master thesis deals with a construction proposal for a vibrating sorter of cartridges. The thesis contains the theoretical part characterizing various sorter types of cartridges and describes the principle of sorting with the help of the vibrating sorters. The practical part includes a draft of a drive, calculation of a vibrating sorter, a proposal of compression springs bearing vibration frame and a control calculation of these springs. A complete vibrating sorter of the cartridges is created in a 3D modeling program. The thesis is attached by the drawings of the individual assemblies, subassemblies and individual parts.
29

Zařízení na výrobu vlákna z termoplastu PET pro použití k 3D tisku metodou FDM / An equipment for PET filament producing for 3D printing usage

Kotačka, Petr January 2016 (has links)
This thesis deals with design of equipment for the production of PET termoplastic fibre to be used in 3D printing by means of FDM method. Concise survey of plastics processing methods is presented herein, furthermore, structural design of equipment with necessary engineering calculations is included as well. Drawing documents with the total economic evaluation is a part of this thesis too.
30

Gesamtfahrzeugsimulation eines Hybridfahrzeuges als dynamisches Ein-Spur-Modell mit Matlab-Simulink

Noack, Hendrik-David 01 December 2015 (has links) (PDF)
In dieser Arbeit wurde ein computergestütztes, dynamisches Ein-Spur-Modell eines Pkw mit einem parallelen hybrid-elektrischen Antrieb (P2-Topologie) in Matlab-Simulink entwickelt. Es erlaubt die Skalierung des elektrischen Leistungsanteils und simuliert die Betriebsarten elekt- risches, konventionelles und hybrides Fahren, Bremsenergierückgewinnung und Start-Stopp- Betrieb. Ferner kann durch die Modellierung einer Einscheiben-Trockenkupplung zwischen Verbrennungs- und Elektromotor die Momentenübertragung bei schlupfender Kupplung wäh- rend des Anfahrens oder beim Start des Verbrennungsmotors durch den Elektromotor nach- gebildet werden. Die Fahrzeugsimulation kann in drei verschiedenen Fahrzyklen (NEFZ, WLTP, FTP-75) durchgeführt werden. Als Ausgabegrößen stehen u.a. der Kraftstoffverbrauch, die CO2-Emissionen, die Antriebs- und Rekuperationsarbeit am Verbrennungs- bzw. Elektro- motor und an den Rädern sowie die dafür benötigte bzw. rückgeführte elektrische Energie zur Verfügung. Zusätzlich kann der zeitliche Verlauf zahlreicher relevanter Größen dargestellt wer- den. Die Validierung der Simulation zeigte eine gute Übereinstimmung mit den Daten eines realen Fahrzeuges in Bezug auf Beschleunigungsverhalten, Maximalgeschwindigkeit und Kraftstoffverbrauch. / In the frame of this Master Thesis a dynamic single-track-model of a hybrid electric vehicle was developed. The model comprises basic operation modes such as electric, conventional and hybrid driving, recuperation of braking energy and engine start-stop. It allows to scale the split of the propulsion between the combustion and electric engine. A further fundamental com- ponent is the model of a friction disc clutch, enabling the simulation of torque transmission of a slipping clutch during the vehicle start and the upspeeding of the combustion engine through the electric engine. The program offers three driving cycles for simulation (NEDC, WLTC, FTP- 75). Fuel consumption, CO2-emissions, propulsion and recuperation work of the combustion engine, electric engine and the wheels are provided as output variables as well as the required and recuperated electric energy. Furthermore several relevant variables are displayed in their progress over time. The model was validated against real vehicle data showing a good corre- lation regarding acceleration, maximum speed and fuel consumption.

Page generated in 0.0506 seconds