Distributed Consensus-Based Event-Triggered Approximate Control of Nonholonomic Mobile Robot Formations

Abstract

In this paper, a distributed consensus-based formation control of networked nonholonomic mobile robots using neural networks (NN) in the presence of uncertain robot dynamics with event-based communication is presented. The robots communicate their location and velocity information with their neighbors, at event-based sampling instants, to drive themselves to a pre-defined desired formation by using distributed controllers. For relaxing the perfect velocity tracking assumption, control torque is designed to reduce the velocity tracking error by explicitly taking into account each robot dynamics and the formation dynamics of the network of robots via NN approximation. The approximated dynamics are employed to generate the control torque with event-sampled measurement updates and communication. For the distributed formation control scheme, Lyapunov stability theory is utilized to develop decentralized event-sampling condition and to demonstrate that the robots reach a consensus in their regulation errors. Finally, simulation results are presented to verify theoretical claims and to demonstrate the reduction in computations and communication cost.

Meeting Name

American Control Conference (2017: May 24-26, Seattle, WA)

Department(s)

Electrical and Computer Engineering

Research Center/Lab(s)

Intelligent Systems Center

Keywords and Phrases

Dynamics; Mobile robots; Neural networks; Robots; Uncertainty analysis; Adaptive consensus; Distributed controller; Distributed formation control; Event based communication; Lyapunov stability theory; Non-holonomic mobile robots; Perfect velocity tracking; Robot formation; Adaptive control systems; Event-sampled control; Mobile robot formations

International Standard Book Number (ISBN)

978-1509059928

International Standard Serial Number (ISSN)

2378-5861

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2017 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 May 2017

Link to Full Text

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