Essays about: "LQG"

Showing result 1 - 5 of 21 essays containing the word LQG.

  1. 1. Validation of the attitude control of KNATTE with flexible appendages

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

    Author : Christoffer Johansson; [2022]
    Keywords : KNATTE; flexible appendages; control; SMC; LQG; PWM; PWPF;

    Abstract : The effect of flexible panels on a spacecraft during attitude movement may induce problems if not correctly accounted for in the control system for the spacecraft. The aim of this thesis is to find and evaluate, control algorithms that could be suitable for the Kinesthetic Node and Autonomous Table-Top Emulator (KNATTE) with two flexible mock-up solar panels during an attitude movement of 20 degrees. READ MORE

  3. 2. 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

  4. 3. Comparing Control Strategies fora Satcom on the Move Antenna

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : Joakim Hellberg; Axel Sundkvist; [2020]
    Keywords : Mechatronics; Control; Satcom on-the-Move; SOTM; H2; Optimal Control; Linear QuadraticGaussian LQG ; LQR; Spiral Search; Estimator; Mekatronik; Reglerteknik; Satcomon-the-Move; SOTM; H2; OptimalReglering; LQG; LQR; Spiralsökning; Tillståndsskattare;

    Abstract : Satellite communication is a widely known method for communicating with remote or disaster-strickenplaces. Sometimes, thecommunication can be a matter of life and death,and it is thus vital that it works well. READ MORE

  5. 4. Multi-Hypothesis Motion Planning under Uncertainty Using Local Optimization

    University essay from Linköpings universitet/Reglerteknik

    Author : Anja Hellander; [2020]
    Keywords : Motion planning; Path planning; Local optimization; RRT*; Homotopy; LQG; Belief space planning; Optimal control;

    Abstract : Motion planning is defined as the problem of computing a feasible trajectory for an agent to follow. It is a well-studied problem with applications in fields such as robotics, control theory and artificial intelligence. READ MORE

  6. 5. Control of a Multivariable Lighting System

    University essay from Linköpings universitet/Reglerteknik

    Author : Axel Halldin; [2017]
    Keywords : Cotrol Allocation; lighting system; MIMO control; multivariable control; light system; recursive least square; RLS; model predictive control; MPC; LQG; static control; non-dynamic control;

    Abstract : This master’s thesis examines how a small MIMO lighting system can be identified and controlled. Two approaches are examined and compared; the first approach is a dynamic model using state space representation, where the system identification technique is Recursive Least Square, RLS, and the controller is an LQG controller; the second approach is a static model derived from the physical properties of light and a feedback feed-forward controller consisting of a PI controller coupled with a Control Allocation, CA, technique. READ MORE