Highlights ► A nonlinear control technique is presented for attitude synchronization problems. ► The attitude controller consists of relative control and absolute control. ► The control algorithm is applied for attitude regulator and tracking problems. ► An air-bearing-based Hardware-In-the-Loop Simulator (HILS) is also developed. ► The HILS simulations confirm the effectiveness of the control algorithm.

    Abstract A nonlinear control technique pertaining to attitude synchronization problems is presented for formation flying spacecraft by utilizing the State-Dependent Riccati Equation (SDRE) technique. An attitude controller consisting of relative control and absolute control is designed using a reaction wheel assembly for regulator and tracking problems. To achieve effective relative control, the selective state-dependent connectivity is also adopted. The global asymptotic stability of the controller is confirmed using the Lyapunov theorem and is verified by Monte-Carlo simulations. An air-bearing-based Hardware-In-the-Loop Simulator (HILS) is also developed to validate the proposed control laws in real-time environments. The SDRE controller is discretized for implementation of a real-time processor in the HILS. The pointing errors are about 0.2° in the numerical simulations and about 1° in the HILS simulations, and experimental simulations confirm the effectiveness of the control algorithm for attitude synchronization in a spacecraft formation flying mission. Consequently, experiments using the HILS in a real-time environment can appropriately perform spacecraft attitude synchronization algorithms for formation flying spacecraft.


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    Title :

    Hardware-In-the-Loop Simulations of spacecraft attitude synchronization using the State-Dependent Riccati Equation technique


    Contributors:

    Published in:

    Advances in Space Research ; 51 , 3 ; 434-449


    Publication date :

    2012-09-05


    Size :

    16 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English






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    Optimized State-Dependent Riccati Equation Method for Spacecraft Attitude Estimation and Control

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