The paper presents a distributed finite-time controller for multiple under-actuated spacecraft with flexible appendages to track a virtual leader with stationary states under an undirected communication graph. Each spacecraft of concern is simplified as a free-floating hub-beam system, which is an under-actuated Euler-Lagrange system by nature since only the hub is driven. In the undirected communication graph, it is assumed that only one spacecraft can receive the information from the virtual leader. A distributed finite-time control law is presented for such a multi-agent system. The closed-loop system is proven to converge to the desired states within a finite time via Lyapunov theory and homogeneous method. Finally, a comparison is made between the proposed controller and the PD controller to show the better performance of the proposed controller.
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| http://dx.doi.org/10.1016/j.isatra.2017.04.019 | DOI Listing |
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Article Synopsis
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- - To enhance resource efficiency, it employs dynamic quantizers for system states and input signals, while addressing potential Denial-of-Service (DoS) attacks in the process.
- - It analyzes the finite-time boundedness of the system through a Lyapunov functional and outlines control design conditions, demonstrating the proposed method's effectiveness with a simulation example.
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