Abstract
AbstractAiming at formation configuration keeping control problem between on-orbit servicing spacecraft and runaway spacecraft, this paper establishes a formation system model under communication resource limitation and uncertainty brought by complex formation system. An event-triggered control strategy which is based on extended state observer (ESO) is adopted to diminish the connection between the sensor and the controller after the design of ESO and analysis of event triggering mechanism. The structure of the event-triggered adaptive controller grounded on extended state observer is shown. The firmness of the closed-loop system is testified by Lyapunov function. The results of simulation tests show that proposed control method designed in this paper can realize the six degree-of-freedom (6-DOF) control for on-orbit servicing spacecraft formation under communication resource limitation, and the introduction of ESO can effectively improve the system’s capability to suppress external interference. The time interval of event-triggered indicating that the event triggering mechanism designed can avoid Zeno phenomenon.KeywordsExtended State Observer (ESO)Event-triggered on-orbit servicingSpacecraft formationSix-degree-of-freedom control (6-DOF)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
