Abstract The robust optimal sun-pointing control strategy for a large geostationary solar power satellite (SPS) is addressed in this paper. The SPS is considered as a huge rigid body, and the sun-pointing dynamics are firstly proposed in the state space representation. The perturbation effects caused by gravity gradient, solar radiation pressure and microwave reaction are investigated. To perform sun-pointing maneuvers, a periodically time-varying robust optimal LQR controller is designed to assess the pointing accuracy and the control inputs. It should be noted that, to reduce the pointing errors, the disturbance rejection technique is combined into the proposed LQR controller. A recursive algorithm is then proposed to solve the optimal LQR control gain. Simulation results are finally provided to illustrate the performance of the proposed closed-loop system.

    Highlights A robust optimal time-varying controller is designed to improve pointing accuracy. The sun-pointing dynamics and the filter are proposed in state space representation. A recursive algorithm to solve controller gain matrix is developed.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Robust optimal sun-pointing control of a large solar power satellite


    Contributors:

    Published in:

    Acta Astronautica ; 127 ; 226-234


    Publication date :

    2016-05-18


    Size :

    9 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    Robust Pointing Control of Spacecraft with Large Appendages

    Lee, F. / Ly, J. / Chiang, R. et al. | British Library Conference Proceedings | 1997


    Solar Pointing Control

    W. T. Chater | NTIS | 1967