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- W4361767099 abstract "A collision-free and connectivity-preserving formation control issue is addressed for a class of nonlinear multi-agent systems (MASs) with external disturbances. The control objective of this paper is divided into two aspects. One is formation control for collision avoidance and connectivity preservation among a leader and communication-connected followers, and the other is obstacle avoidance between followers and potential obstacles including environmental obstacles and communication-connectionless followers. A tangent-type formation error transformation function is introduced for the first topic. With this transformation, an error transformation equation is developed, and the first topic is transformed into an error stabilization issue. Then, an improved continuous differentiable potential function is constructed for the second topic, and the partial derivative of this improved potential function is smooth and continuous as obstacles enter or exit detection ranges. A predictor-based neural network disturbance observer (PNNDO) is developed for generalized disturbances. Prediction errors are introduced to update NNs' weights, and this replacement avoids phenomenon of high-frequency oscillations with overlarge adaptive gains. With a normalized learning method, the number of NNs' learning parameters is also reduced. With the help of the Lyapunov stability, it is proved that the control objective is achieved. The effectiveness of the control strategy is verified by a group of quadrotors." @default.
- W4361767099 created "2023-04-04" @default.
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- W4361767099 date "2023-08-01" @default.
- W4361767099 modified "2023-10-10" @default.
- W4361767099 title "Collision-Free and Connectivity-Preserving Formation Control of Nonlinear Multi-Agent Systems With External Disturbances" @default.
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- W4361767099 doi "https://doi.org/10.1109/tvt.2023.3262673" @default.
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