Different methods for spacecraft attitude and rate estimation using variable structure systems theory are presented. The simplest approach involves the study of the spacecraft system decoupled in all three axes, where three sliding observers are run in parallel using a linearized model of the system for the observer dynamics. The second approach investigates the possibility of extracting the angular rate data by low-pass filtering of the derivative of angular measurements. Outputs of the filter are then fed to the observer as measurements and the angular rate estimates are obtained using a sliding observer. The final approach regards the spacecraft axes coupled. The sliding observer is implemented on the nonlinear dynamic and kinematic equations of motion to obtain the angular rate and attitude estimates. It is shown on the CATSAT (Cooperative Astrophysics and Technology SATellite) simulation model that actual rates are successfully estimated regardless of the large quantities of uncertainty in the inertia matrix and disturbance in the input torques.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Spacecraft attitude and rate estimation using sliding mode observers


    Contributors:


    Publication date :

    2003-01-01


    Size :

    360584 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Spacecraft Attitude and Rate Estimation Using Sliding Mode Observers

    Koprubasi, K. / Thein, M.-W. L. | British Library Conference Proceedings | 2003


    Spacecraft Attitude Sliding Mode Controller Using Reaction Wheels

    Kowalchuk, Scott / Hall, Christopher | AIAA | 2008



    Spacecraft Attitude Sliding Mode Controller Using Reaction Wheels

    Kowalchuk, S. / Hall, C. | British Library Conference Proceedings | 2008


    Robust Spacecraft Attitude Control Using Sliding Mode Control

    Shin, D. / Kim, J. / AIAA | British Library Conference Proceedings | 1998