Edge-Triggered Leader-Follower Consensus of Multiple Spacecraft Systems With Unknown Disturbances

• Published in: IEEE transactions on signal and information processing over networks Vol. 10; pp. 740 - 751
• Main Authors: Liang, Dong, Wang, Shimin, Tian, Engang
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 2024; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Attitude control; Attitudes; Communication networks; Continuous time systems; Data communication; Decentralized control; distributed observers; Disturbances; edge-based control; Group dynamics; Multiple rigid-body systems; Nonlinear control; Observers; Protocols; Quaternions; Rigid-body dynamics; Space vehicles; Spacecraft; Technical papers
• ISSN: 2373-776X; 2373-7778
• DOI: 10.1109/TSIPN.2024.3467916

Multiple rigid bodies can model various practical industrial systems. However, periodic sampled-data communication can have a load over the network subject to limited bandwidth. The research on the leader-follower attitude consensus issue for a group of rigid-body dynamics is conducted in this technical paper. The plant of each follower is subject to unknown external disturbances. To reduce the burden of the communication network, an edge-triggered nonlinear distributed observer with dynamic triggering mechanisms is presented. The proposed observer has the ability to evaluate the leader system's state regardless of implementing the continuous-time exchange of the neighborhood information. The proposed edge-based triggering mechanism is asynchronous while eliminating the Zeno phenomenon. Based on the nonlinear observer, a distributed control protocol together with an adaptive law is put forward in order to realize the leader-follower attitude consensus while attenuating the unknown external disturbances. In the end, an illustrative example of a collection of spacecraft systems is provided to verify the feasibility of our methods.