The purpose of this paper is to accomplish robust actuator fault isolation and identification for microsatellite attitude control systems (ACSs) subject to a series of space disturbance torques and gyro drifts.

    Design/methodology/approach

    For the satellite attitude dynamics with Lipschitz constraint, a multi-objective nonlinear unknown input observer (NUIO) is explored to accomplish robust actuator fault isolation based on a synthesis of Hinf techniques and regional pole assignment technique. Subsequently, a novel disturbance-decoupling learning observer (D2LO) is proposed to identify the isolated actuator fault accurately. Additionally, the design of the NUIO and the D2LO are reformulated into convex optimization problems involving linear matrix inequalities (LMIs), which can be readily solved using standard LMI tools.

    Findings

    The simulation studies on a microsatellite example are performed to prove the effectiveness and applicability of the proposed robust actuator fault isolation and identification methodologies.

    Practical implications

    This research includes implications for the enhancement of reliability and safety of on-orbit microsatellites.

    Originality/value

    This study proposes novel NUIO-based robust fault isolation and D2LO-based robust fault identification methodologies for spacecraft ACSs subject to a series of space disturbance torques and gyro drifts.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Observer-based robust actuator fault isolation and identification for microsatellite attitude control systems


    Contributors:
    Li, Huayi (author) / Jia, Qingxian (author) / Ma, Rui (author) / Chen, Xueqin (author)

    Published in:

    Publication date :

    2021-08-14


    Size :

    1 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    Observer-Based Attitude Control for Satellite Under Actuator Fault

    Zhang, Aihua / Hu, Qinglei / Zhang, Youmin | AIAA | 2014


    Robust control of the SMART microsatellite attitude dynamics

    Pastena, M. / Grassi, M. / International Astronautical Federation et al. | British Library Conference Proceedings | 2000


    Robust Control of the Smart Microsatellite Attitude Dynamics

    Pastena, Massimiliano | Online Contents | 2000