Abstract
In this chapter we study the swarm tracking problem, that is, the problem of finding a coordinated control scheme for a group of mobile agents that make them achieve and maintain a certain desired behavior; in particular, we concentrate on the problem of maintaining a given geometrical formation. At the same time, the agents need to seek a mobile source of a scalar signal or track a moving target. By using artificial potential functions to encode the agent-target, agent-agent, and/or agent-obstacle interaction, we are able to use extremum seeking techniques for controller design of each agent, which could be decentralized and in some instances does not require knowledge of target position and agent positions. The effectiveness of three different extremum seeking control designs is analytically established and compared via corresponding simulation results. Finally, an application of the swarming theory is presented, where localization of radar leakage points via a mobile sensor network is studied, and simulation results are provided.
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Notes
- 1.
Direct search is used here as a valid optimization method for NOESC because its behavior and properties are similar to those of derivative-free trust region methods. Moreover, since we rely on an asymptotic controller, all stability, convergence and robustness results from Chap. 5 directly apply here.
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Zhang, C., Ordóñez, R. (2012). Swarm Tracking. In: Extremum-Seeking Control and Applications. Advances in Industrial Control. Springer, London. https://doi.org/10.1007/978-1-4471-2224-1_8
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DOI: https://doi.org/10.1007/978-1-4471-2224-1_8
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