Cooperative Control of Robotic Aircraft

A document reviews a multidisciplinary research program oriented toward development of a rigorous theoretical foundation, and scalable analytical tools and paradigms, for construction of cooperative, networked control for numerous autonomous and semi-autonomous aircraft. This research has addressed issues affecting the design of robust autonomous vehicle systems that could operate in highly uncertain environments, form teams, manage information, and cooperate in deployment, allocation of tasks, and searches. Significant accomplishments are reported in three areas:

  • Deployment and Task Allocation

    Algorithms for deployment of aircraft for surveillance have been developed. The algorithms run in real time aboard the aircraft, routing the aircraft to optimal locations, coordinating among the aircraft, thereby enabling efficient deployment throughout a geographic region.

  • Verification and Hybrid Systems

    Advances have been made in the theory of hybrid input-output automata and in techniques, based on this theory, that enable off-line automatic verification and validation of safety and liveness of cooperative control algorithms.

  • Information Management for Cooperative Control

    An information theory produced in this research has yielded significant contributions to the design of robust communication protocols featuring cooperative routing schemes that take advantage of network layer diversity and delay adaptation to increase reliability over wireless networks with fading channels.

This work was done by Geir E. Dullerud, P. R. Kumar, Daniel Liberzon, Bruce Reznick and Mahesh Viswanathan of the University of Illinois; Francesco Bullo of the University of California, Santa Barbara; Eric Feron of Georgia Institute of Technology; Emilio Frazzoli, Nancy A. Lynch, Sanjoy K. Mitter, Eytan Modiano, and Pablo Parrilo of Massachusetts Institute of Technology; and Sanjay Lall and John C. Mitchell of Stanford University for the Air Force Office of Scientific Research.

AFRL-0075



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Cooperative Control of Robotic Aircraft

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Defense Tech Briefs Magazine

This article first appeared in the August, 2008 issue of Defense Tech Briefs Magazine (Vol. 2 No. 4).

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Overview

The document presents a comprehensive report on a research initiative aimed at developing a rigorous theoretical foundation and scalable analytical tools for the control of large numbers of autonomous and semi-autonomous air vehicles. This initiative, part of a Multidisciplinary University Research Initiative (MURI), addresses critical reliability and performance issues faced by autonomous vehicle systems operating in uncertain environments.

The primary goal of the research is to enable these vehicles to form teams, manage information, and coordinate operations, including deployment, task allocation, and search missions. The program has produced fundamental theories that facilitate systematic performance analysis, verification, and validation of such systems. Additionally, it has developed algorithms for practical implementation and design software, which are essential for the effective operation of these autonomous systems.

Key advancements highlighted in the report include dynamic deployment strategies, task allocation methods, and improvements in verification processes for hybrid systems. The research also emphasizes information management for cooperative control, which is crucial for the successful operation of multiple vehicles working together.

The document outlines the significant impact of the research on understanding and designing large-scale cooperative Unmanned Aerial Vehicle (UAV) systems. It provides a long-term basis for enhancing capabilities in this field, enabling the systematic construction of robust real-time distributed systems. The research team has received numerous awards and recognitions for their contributions throughout the project, underscoring the importance and relevance of their work.

In summary, the report encapsulates the efforts to advance the field of autonomous vehicle systems through theoretical and practical innovations. It serves as a valuable resource for researchers and practitioners interested in cooperative control, multi-vehicle deployment algorithms, and the validation and verification of complex systems. The findings and methodologies presented in this document are expected to influence future developments in autonomous systems, particularly in applications requiring coordination and collaboration among multiple vehicles in dynamic environments.