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Safety and Reliability in Cooperating Unmanned Aerial Systems.
Title:
Safety and Reliability in Cooperating Unmanned Aerial Systems.
Author:
Rabbath, Camille Alain.
ISBN:
9789812837004
Personal Author:
Physical Description:
1 online resource (236 pages)
Contents:
Contents -- Preface -- 1. Introduction -- 1.1 Unmanned Aerial Systems -- 1.2 Cooperative Control -- 1.3 Contingencies -- 1.3.1 Faults and failures of UAV components -- 1.3.2 Vehicle damage -- 1.3.3 Information flow faults -- 1.3.4 Team anomalies and collisions -- 1.3.5 Environmental effects -- 1.3.6 Book overview -- 2. Health Management for the Individual Vehicle: A Review -- 2.1 Passive and Active Fault-Tolerant Control Systems -- 2.2 Fault/Failure Detection and Diagnosis -- 2.3 Control Reconfiguration -- 2.4 FTC and FDD Techniques for MAV and SUAV -- 3. Health Monitoring and Adaptation for UAS Formations -- 3.1 Models of Vehicle Dynamics, Flight Control, and Faults -- 3.1.1 ALTAV dynamics and control -- 3.1.2 Quadrotor dynamics and control -- 3.1.3 Actuator faults -- 3.2 Formation Control -- 3.2.1 Elements of contraction theory -- 3.2.2 Simplified modeling for the purpose of formation control synthesis -- 3.2.3 Formation control objective -- 3.2.4 Closed-loop representation of the formation -- 3.2.5 Convergence analysis of state trajectories -- 3.2.6 Modeling a formation of UAVs with realistic nonlinear dynamics -- 3.2.7 Trajectory of the leader and obstacle/threat avoidance -- 3.2.8 Formation control design algorithm -- 3.3 Observer-Based Decentralized Abrupt Fault Detector -- 3.3.1 Context -- 3.3.2 Simplified model of vehicle closed-loop dynamics -- 3.3.3 Concept of observer with disturbance attenuation -- 3.3.4 Synthesis of DAFD -- 3.3.5 Threshold selection -- 3.3.6 DAFD design algorithm -- 3.4 Signal-Based Decentralized Non-Abrupt Fault Detector -- 3.4.1 Context -- 3.4.2 Networked information and coupling effects -- 3.4.3 Estimator of heading angle -- 3.4.4 Statistical test for DNaFD -- 3.4.5 DNaFD design algorithm -- 3.5 UAV Command Adaptation -- 3.6 Simulations and Experiments -- 3.6.1 Formation control of unicycles.

3.6.2 Formation control of quadrotor aircraft -- 3.6.3 DAFD and formation control of ALTAVs -- 3.6.4 DAFD and quadrotor formation control -- 3.6.5 DNaFD and formation control of ALTAVs -- 3.6.5.1 Simulations exempt from environmental effects -- 3.6.5.2 Simulations with environmental effects -- 3.6.6 Decentralized fault detection for mixed-type, concurrent actuator faults -- 3.6.7 DAFD/DNaFD in closed loop with individual vehicle FDD system -- 3.6.8 A note on the digital implementation -- 4. Decision Making and Health Management for Cooperating UAS -- 4.1 Coordinated Rendezvous of UAS Formations -- 4.1.1 Context -- 4.1.2 Related work -- 4.1.3 Multi-formations -- 4.1.4 Models -- 4.1.4.1 Cooperating UAS and urban environment -- 4.1.4.2 Measurements -- 4.1.4.3 Feasible paths -- 4.1.4.4 Communication network -- 4.1.5 UAS-threat encounters modeled as Markov decision processes -- 4.1.6 Problem formulation -- 4.1.7 Decision policies: perfect information -- 4.1.8 Decision policies: partially known environment -- 4.1.8.1 Information state estimation -- 4.1.8.2 Rollout policy -- 4.1.8.3 Computational load -- 4.1.9 Design of CHM and decision making system -- 4.1.9.1 Perfect information -- 4.1.9.2 Partially known environment -- 4.2 Cooperation Despite Information Flow Faults -- 4.2.1 Context -- 4.2.2 Impact of information ow fault on UAS decision policies -- 4.2.3 Health state estimation -- 4.2.4 Distributed computations of W0 k -- Pi -- E -- j -- 4.3 Numerical Simulations -- 4.3.1 Single target area and perfectly known environment -- 4.3.1.1 Low-level health threat -- 4.3.1.2 High-level health threat -- 4.3.2 Sequence of targets and perfect knowledge of environment -- 4.3.3 The case of perturbed MDPs -- 4.3.4 Successive zones of surveillance in partially known environment -- 4.3.5 Information flow faults.

4.4 Distributed and Parallel Implementation of Optimization Algorithms -- 4.4.1 Context -- 4.4.2 Architecture -- 4.4.3 Distributed and parallel simulation environment -- 4.4.4 Experiments -- Bibliography -- Index.
Abstract:
This book provides a comprehensive overview of recent advances in the analysis and design of health management systems for cooperating unmanned aerial vehicles. Such systems rely upon monitoring and fault adaptation schemes. Motivation for their study comes from the fact that, despite the use of fault-tolerant control software and hardware embedded onboard air vehicles, overall fleet performance may still be degraded after the occurrence of anomalous events such as systems faults and failures. Cooperative health management (CHM) systems seek to provide adaptation to the presence of faults by capitalizing on the availability of interconnected computing, sensing and actuation resources.This monograph complements the proposed CHM concepts by means of case studies and application examples. It presents fundamental principles and results encompassing optimization, systems theory, information theory, dynamics, modeling and simulation. Written by pioneers in cooperative control, health management and fault-tolerant control for unmanned systems, this book is a unique source of information for designers, researchers and practitioners interested in the field.
Local Note:
Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, 2017. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries.
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