Optimization of spacecraft attitude maneuvers can significantly reduce attitude control system size and mass, and extend satellite end-of-life. Optimal control theory has been applied to solve a variety of open-loop optimal control problems for terrestrial, air, and space applications. However, general application of real-time optimal controllers on spacecraft for large slew maneuvers has been limited because open-loop control systems are inherently vulnerable to error and the computation necessary to solve for an optimized control solution is resource intensive. This research effort is focused on developing a near real-time optimal control (RTOC) system for spacecraft attitude maneuvers on the Air Force Institute of Technology's 2nd generation simulated satellite, SimSat II. To meet the end goal of developing a RTOC controller, necessary preliminary steps were completed to accurately characterize SimSAT II's mass properties and attitude control system. Using DIDO, a pseudospectral-based optimal control solver package, to continuously solve and execute a sequence of optimized open-loop control solutions in near real-time, the RTOC controller can optimally control the state of the satellite over the course of a large angle slew maneuver. In this research, simulation and experimental results clearly demonstrate the benefit of RTOC versus other non-optimal control methods for the same maneuver.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Near Real-Time Closed-Loop Optimal Control Feedback for Spacecraft Attitude Maneuvers


    Contributors:

    Publication date :

    2009


    Size :

    149 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    Near Real-Time Closed-Loop Optimal Control Feedback for Spacecraft Attitude Maneuvers

    McFarland, C. / Swenson, E. / Black, J. et al. | British Library Conference Proceedings | 2009


    Near Real-Time Closed-Loop Optimal Control Feedback for Spacecraft Attitude Maneuvers

    McFarland, Chester / Swenson, Eric / Black, Jonathan et al. | AIAA | 2009


    Optimal nonlinear feedback control for spacecraft attitude maneuvers

    CARRINGTON, C. K. / JUNKINS, J. L. | AIAA | 1986


    On Closed-Loop Spacecraft Attitude Maneuvers (AAS 07-354)

    Sekhavat, P. / Ross, I.M. / American Astronautical Society et al. | British Library Conference Proceedings | 2008


    Optimal Spacecraft Attitude Maneuvers via Adjoint Method

    Guo, Jian ;Yao, Yu ;He, Feng Hua | Trans Tech Publications | 2013