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Design of LQG/LTR controller for attitude control of geostationary satellite using reaction wheels

Kosari, A | 2013

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  1. Type of Document: Article
  2. DOI: 10.1109/VPPC.2013.6671729
  3. Publisher: IEEE Computer Society , 2013
  4. Abstract:
  5. In this paper, LQG/LTR controller is designed for attitude control of the geostationary satellite at nominal mode. Usage actuator is the reaction wheel and control torque is determined by the LQR regulator. LQR controller signal has good performance, if all states are considered in feedback, but does not include model and sensors noises. Usage sensors are sun and earth sensors and EKF is used for estimation of noisy states. Then, LQG and LQG/LTR controllers are designed based on the estimated states, and are compared with LQR controller. The results show that robustness and performance of LQG/LTR are better than LQG and its control overshoot is smaller than LQR. The term that is provided in designs, is avoiding of saturation of actuator
  6. Keywords:
  7. Attitude control ; Extended Kalman filter ; Geostationary satellite ; LQG/LTR ; Reaction wheel ; Actuators ; Extended Kalman filters ; Flight dynamics ; Geostationary satellites ; Propulsion ; Sensors ; Control torque ; Earth sensor ; Estimated state ; LQR controller ; LQR regulator ; Reaction wheels ; Sensors noise ; Controllers
  8. Source: 2013 9th IEEE Vehicle Power and Propulsion Conference, IEEE VPPC 2013 ; N: 6671729 , 2013 , Pages 411-415 ; 9781479907205 (ISBN)
  9. URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6671729