Essays about: "control spacecraft"

Showing result 16 - 20 of 67 essays containing the words control spacecraft.

1. 16. Comparative Analysis of Real-Time Industrial Ethernet Protocols : ModbusTCP Protocol Implementation

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Roshni Maniraj; [2022]
   Keywords : Industrial Ethernet; Communication Protocols; Real-time communication protocols; Modbus TCP; EtherNet IP; PROFINET IO; Ethernet Powerlink; EtherCAT®; CC-Link IE; Sercos III; Industriellt Ethernet; kommunikationsprotokoll; kommunikationsprotokoll i realtid; Modbus TCP; EtherNet IP; PROFINET IO; Ethernet Powerlink; EtherCAT®; CC-Link IE; Sercos III;

   Abstract : Industrial Ethernet Communication protocols for Real-Time communication is the focus of research in a variety of different industrial Applications. The subject of thesis study is a comprehensive analysis of Industrial Ethernet protocols used in safety-critical real-time environment, comparing these based on performance, safety, diagnostics and error detection features, topology preference, cost incurred and openness of the protocol. READ MORE

3. 17. Development of Software Library for Open Source GNSS Receiver with Focus on Physical Layer Signal Processing

   University essay from Luleå tekniska universitet/Rymdteknik

   Author : Vitalijs Kudrins; [2021]
   Keywords : GNSS; GPS; Galileo; GNSS Signal; Rust library; Engelska; English;

   Abstract : In order to directly interface with signal broadcast by global navigation satellite systems (GNSS) – such as GPS or Galileo – for the purpose of calculating location, a potential user is required to extract great amount of information from interface control documents (ICD) as well as build custom software tools to process this information. This is time consuming and inefficient. READ MORE

4. 18. Reaction Wheel Performance Characterisation and Assessment of Electromagnetic Interactions with Magnetic Torquers

   University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknik

   Author : Leonie Sander; [2021]
   Keywords : Reaction Wheel; Magnetic Torquers; Electromagnetism; Space Mechanism; Attitude Control;

   Abstract : Having an in-depth knowledge on the performance characteristics of space mechanisms in flight operation, with special attention to nominal vs. anomalous performance, is vital for mission success. READ MORE

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

   University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknik

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

   Abstract : 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. READ MORE

6. 20. Magnetic Moment Characterization for Small Satellites

   University essay from Luleå tekniska universitet/Rymdteknik

   Author : Alejandro Sans Monguiló; [2021]
   Keywords : small satellite; CubeSat; optical magnetic test bed; magnetic dipole moment characterization; residual magnetic moment; permanent magnet verification; magnetic measurement; Foresail-1; Helmholtz cage;

   Abstract : Small satellites are gaining popularity in a wide range of applications where attitude systems require high precision performance. One of the main sources of errors, in case of magnetic attitude control systems, is the residual magnetic moment (RMM) of the spacecraft. READ MORE