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| Content Provider | IET Digital Library |
|---|---|
| Author | Tran, Vu Phi Garratt, Matthew A. Petersen, Ian R. |
| Abstract | This paper tackles the distributed leader–follower cooperative control problem for networked heterogeneous unmanned aerial vehicle–unmanned ground vehicle (UAV-UGV) systems in unknown environments requiring formation keeping, obstacle avoidance, inter-robot collision avoidance, and reliable robot communications. To adopt various formations, we design a novel negative imaginary (NI) switching formation protocol with a directed dynamic topology. To prevent an inter-mobile robot collision, a new method to formulate the virtual propulsive force between robots is employed. To avoid unexpected obstacles, a new obstacle avoidance technique that allows the UGVs' formation to change its shape and the UGVs' roles is developed. To determine each UGV robot's order in obstacle avoidance formation, a quadrotor UAV, controlled by a strictly negative imaginary controller involving good wind resistance characteristics, tracks the center of formation shape to guarantee the maintaining visibility for multi-robot systems on the ground. The proposed control system's efficacy is investigated through a rigorously comparative study with other control techniques, namely, the performance of artificial potential field and an NI obstacle avoidance strategy using the switching formation control method without switching topology. Finally, we also conduct a stability analysis of the closed-loop control system using the NI-systems theory. |
| Starting Page | 2948 |
| Ending Page | 2959 |
| Page Count | 12 |
| ISSN | 17518644 |
| Volume Number | 14 |
| e-ISSN | 17518652 |
| Issue Number | Issue 18, Dec (2020) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-cta/14/18 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-cta.2020.0502 |
| Journal | IET Control Theory & Applications |
| Publisher Date | 2020-09-14 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Aerospace Control Autonomous Aerial Vehicle Closed Loop System Closed-loop Control System Collision Avoidance Computer Vision And Image Processing Technique Directed Dynamic Topology Distributed Control Distributed Leader–follower Cooperative Control Problem Formation Keeping Formation Shape Formation Strategy Inter-mobile Robot Collision Inter-robot Collision Avoidance Mobile Robots Multi-robot System Multirobot System Networked Heterogeneous Unmanned Aerial Vehicle–unmanned Ground Vehicle NI Obstacle Avoidance Strategy NI-System Theory Novel Negative Imaginary Switching Formation Protocol Obstacle Avoidance Formation Obstacle Avoidance Technique Quadrotor UAV Reliable Robot Communication Rigorously Comparative Study Robot Vision Spatial Variables Control Stability Stability in Control Theory Strictly Negative Imaginary Controller Switching Formation Control Method Switching System (control) Telerobotics Time Varying Control System UAV-UGV UGV Robot UGVs' Formation Uncertain Environments Unexpected Obstacles Virtual Propulsive Force |
| Content Type | Text |
| Resource Type | Article |
| Subject | Control and Optimization Control and Systems Engineering Human-Computer Interaction Electrical and Electronic Engineering Computer Science Applications |
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