Sökning: "Vibration Testing"

Visar resultat 21 - 25 av 102 uppsatser innehållade orden Vibration Testing.

1. 21. Modelling and testing of a solar panel structure for KNATTE (Kinesthetic Node and Autonomous Table-Top Emulator)

   Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

   Författare :Elena Fernández Bravo; [2021]
   Nyckelord :Frictionless platform; Linear Quadratic Gaussian; Flexible appendages; Finite Element Method;

   Sammanfattning : One of the challenges that satellites face is the interaction between control movement and vibration of flexible appendages such as solar arrays and antennas that can negatively affect the performance of the spacecraft. The aim of this thesis is to develop a numerical model of a solar panel structure for KNATTE, a frictionless platform developed by the Onboard Space Systems group at Luleå University of Technology, and develop a control law that reduces the flexible vibration of the solar arrays when attitude control manoeuvres are performed. LÄS MER

3. 22. Finite Element Analysis of Stresses in the MIST CubeSat due to Dynamic Loads During Launch

   Master-uppsats, KTH/Lättkonstruktioner

   Författare :Carl Järmyr Eriksson; [2021]
   Nyckelord :Satellite; CubeSat; Nanosatellite; Dynamic Loads; Launch Loads; Finite Element Analysis; FEA; Quasi-static Acceleration; Modal Analysis; Random Vibration; Shock Loads; satellit; CubeSat; nanosatellit; dynamiska laster; uppskjutningslaster; finita elementmetoden; FEM; kvasistatisk acceleration; modalanalys; stokastiska vibrationer; chocklaster;

   Sammanfattning : A finite element model of the CubeSat MIST was created, in order to assess the stresses that occur in the satellite in response to loads during its launch. Due to size limits of thesoftware used, simplifications had to be made to the geometry of the model. LÄS MER

4. 23. Analysis of comparative filter algorithm effect on an IMU

   Kandidat-uppsats,

   Författare :Johan Åkerblom Svensson; Joakim Gullberg Carlsson; [2021]
   Nyckelord :IMU; Vibration; autonomous driving; complementary filter; accelerometer; gyroscope;

   Sammanfattning : An IMU is a sensor with many differing use cases, it makes use of an accelerometer, gyroscope and sometimes a magnetometer. One of the biggest problems with IMU sensors is the effect vibrations can have on their data. The reason for this study is to find a solution to this problem by filtering the data. LÄS MER

5. 24. Test Equipment for Physical Testing of Vibration Isolator

   Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

   Författare :ADAM ALVETEG; MARKUS JOHANSSON; [2021]
   Nyckelord :Test rig; vibration isolator; hysteresis; Testrigg; vibrationsisolator; hysteres;

   Sammanfattning : Vibrations is a phenomenon that can cause problems to systems if not dealt with. In heavy duty trucks, vibrations are mainly caused by uneven roads and from the combustion engine. Vibrations can damage components, reduce their service life and cause discomfort for the driver. LÄS MER

7. 25. Design and Commissioning of Pulsed Wire Magnetic Measurement System for Insertion Device Characterization

   Master-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

   Författare :Mohammed Ebbeni; [2021]
   Nyckelord :pulsed wire; synchrotron; radiation; insertion device; undulator; wiggler; magnetic measurement; hall-probe; hall probe; commissioning; phase error; euler bernoulli; beam; coupled vibration; optical sensor; laser sensor; vibrations; photodiode; beamline; Physics and Astronomy;

   Sammanfattning : Synchrotron and Free Electron Laser (FEL) light is becoming an increasingly sought after tool for almost all scientific research aspects. MAX IV Laboratory introduced the first 4th generation light source that provides the brightest synchrotron light in the world. LÄS MER