Abstract Space tethered system has been widely investigated because of its extensive applications in space observation, debris removal, and space solar power station, etc. Yet, due to the system coupling nonlinearities, unknown disturbances, and on-board limited communication constraints, the deployment control of the spacecraft system is still challenging. In this paper, an adaptive integral sliding mode controller is designed by using neural network estimator, barrier function and event-triggered mechanism, which ensures that the system deploys to the specified configuration in finite time. Giving that the lumped disturbances are bounded by an unknown boundary, the gain of the switching term is tuned by the barrier function such that the gain-overestimation problem can be avoided. Then, the dynamic event-triggered mechanism updates the control signal non-periodically between the controller and the actuator, thus communication resources can be saved. Moreover, the stability of the closed system with and without event-triggered mechanism is analyzed. Finally, simulation tests are carried out to exhibit the effectiveness of the proposed control scheme.

    Highlights An integral sliding mode strategy based on neural networks is designed. A barrier function is introduced to adjust the robust gain term. A dynamic event triggering mechanism is integrated.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Adaptive dynamic event-triggered deployment control for space triangle tethered formation system with external disturbance


    Contributors:

    Published in:

    Acta Astronautica ; 200 ; 1-10


    Publication date :

    2022-07-24


    Size :

    10 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English







    Memory Event-Triggered Robust Control for Networked Control Systems Under External Disturbance

    Ge, Jifeng / Chen, Linbo / Li, Tao et al. | Springer Verlag | 2021


    Event-Triggered Active Disturbance Rejection Control

    Shi, Dawei / Huang, Yuan / Wang, Junzheng et al. | Springer Verlag | 2021