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Distributed Formation Control of Clustered VTOL UAVs

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There are nine chapters in this book. The first chapter gives some introduction. The second chapter gives some mathematical preliminaries for the convenience of the subsequent theoretical analysis. The third to sixth chapters focus on the formation flight objective; and the distributed control algorithms are proposed in the cases of switching topology, distance based topology, parametric uncertainties and actuator faults, respectively. The seventh to ninth chapters focus on the formation tracking objective, In the seventh and eighth chapters, two distributed control algorithms are developed over undirected and directed topologies, respectively. In the ninth chapter, an output-feedback distributed control algorithm is developed in the absence of velocity and angular velocity information.
This book is written for the readers who are working on the areas of aviation, robotics, aircraft, etc.
Table of Contents
1 Introduction
1.1 Research Significance
1.2 Research Overview
1.2.1 Research Status on Cooperative Control Methods
1.2.2 Research Status on UAV Cluster Projects
1.3 Outline
References
2 Background and Preliminaries
2.1 Preliminaries
2.1.1 Notation and Definitions
2.1 . 2 Useful Lemmas
2.1.3 Filippov Solution and Non-Smooth Analysis
2.2 Graph Theory
2.3 System Models of VTOL UAVs
2.3.1 Attitude Representation
2.3.2 Kinematics and Dynamics of VTOL UAVs
2.4 Conclusions
References
3 Distributed Formation Control for Clustered VTOL UAVs Over a Switching Topology
3.1 Problem Statements
3.1.1 System Model
3.1.2 Switching Topology Graph
3.1.3 Control Objective
3.2 Distributed Control Algorithm Development Over a Switching Topology
3.2.1 Problem Transformation
3.2.2 Command Force Synthesis
3.2.3 Applied Torque Synthesis
3.2.4 Stability Analysis
3.3 Simulations
3.4 Conclusions
References
4 Distributed Formation Control for Clustered VTOL UAVs Over a Distance-Based Topology
4.1 Problem Statements
4.1.1 System Model
4.1.2 Distance-Based Network Topology
4.1.3 Control Objective
4.2 Distributed Control Algorithm With Connectivity Maintenance Mechanism
4.2.1 Problem Transformation
4.2.2 Command Force Synthesis
4.2.3 Applied Torque Synthesis
4.2.4 Stability Analysis
4.3 Simulations
4.4 Conclusions
References
5 Adaptive Distributed Formation Control for Clustered VTOL UAVs with Parametric Uncertainties
5.1 Problem Statements
5.1.1 System Model
5.1.2 Topology Graph
5.1.3 Control Objective
5.2 Adaptive Distributed Control Algorithm
5.2.1 Problem Transformation
5.2.2 Command Force Synthesis
5.2.3 Applied Torque Synthesis
5.2.4 Stability Analysis
5.3 Simulations
5.4 Conclusions
References
6 Adaptive Fault-Tolerant Distributed Formation Control for Clustered VTOL UAVs
6.1 Problem Statements
6.1.1 System Model
6.1.2 Actuator Faults
6.1.3 Topology Graph
6.1.4 Control Objective
6.2 Adaptive Fault-Tolerant Distributed Control Algorithm
6.2.1 Problem Transformation
6.2.2 Command Force Synthesis
6.2.3 Desired Torque Synthesis
6.2.4 Stability Analysis
6.3 Simulations
6.4 Conclusions
References
7 Distributed Formation Tracking Control for Clustered VTOL UAVs Over Undirected Topology
7.1 Problem Statements
7.1.1 System Model
7.1.2 Network Topology
7.1.3 Control Objective
7.2 Distributed Control Algorithm Development Over Undirected Topology
7.2.1 Command Force Synthesis
7.2.2 Command Attitude Extraction
7.2.3 Applied Torque Synthesis
7.2.4 Stability Analysis
7.3 Simulations
7.4 Conclusions
References
8 Distributed Formation Tracking Control for Clustered VTOL UAVs Over Directed Topology
8.1 Background
8.1.1 Problem Statements
8.1.2 Network Topology
8.2 Distributed Control Algorithm Development Over Directed Topology
8.2.1 Distributed Estimator Design
8.2.2 Problem Transformation
8.2.3 Command Force Synthesis
8.2.4 Applied Torque Synthesis
8.2.5 Stability Analysis
8.3 Simulations
8.4 Conclusions
References
9 Distributed Output-Feedback Formation Tracking Control for Clustered VTOL UAVs
9.1 Problem Statements
9.1.1 System Model
9.1.2 Network Topology
9.1.3 Control Objective
9.2 Distributed Output-Feedback Control Algorithm Development
9.2.1 Command Force Synthesis
9.2.2 Command Attitude Extraction
9.2.3 Applied Torque Synthesis
9.2.4 Stability Analysis
9.3 Simulation
9.4 Conclusions
References
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Preface
In the past few decades, the formation of unmanned aerial vehicles (UAVs) has received considerable attention among engineering communities due to its potential applications in military and civil fields. Instead of a single monolithic UAV, the formation of clustered micro UAVs is capable of accomplishing flight missions efficiently without costly expenses. As a representative UAV, the vertical take off and landing (VTOL) UAV has drawn growing interest since it is suitable for scenarios requiring stationary or low-speed/low-altitude flights. The formation control is a basic technique for the achievement of the UAV formation in a prescribed configuration. The difficulties in the formation control of clustered VTOL UAVs arise mainly from two aspects. On one hand, an individual VTOL UAV is in nature an under-actuated system, which complicates its controller design greatly. On the other hand, the information interaction among UAVs may be limited, especially when the network scale is large. In such a case, the analysis of interactive VTOL UAVs becomes much more complicated.
Distributed Formation Control of Clustered VTOL UAVs
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