Variable formation control of multiple robots via VRc and formation switching to accommodate large heading changes by leader robot

This article describes a novel multi-robot formation control based on a switching technique that allows follower robots to maintain formation when the leader robot’s direction changes rapidly or unexpectedly. The formation pattern is determined using Virtual Robot’s Center of the multi-robot formati...

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Main Authors: Sung-Gil Wee, Yanyan Dai, Tae Hun Kang, Suk-Gyu Lee
Format: Article
Language:English
Published: SAGE Publishing 2019-06-01
Series:Advances in Mechanical Engineering
Online Access:https://doi.org/10.1177/1687814019857339
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author Sung-Gil Wee
Yanyan Dai
Tae Hun Kang
Suk-Gyu Lee
author_facet Sung-Gil Wee
Yanyan Dai
Tae Hun Kang
Suk-Gyu Lee
author_sort Sung-Gil Wee
collection DOAJ
description This article describes a novel multi-robot formation control based on a switching technique that allows follower robots to maintain formation when the leader robot’s direction changes rapidly or unexpectedly. The formation pattern is determined using Virtual Robot’s Center of the multi-robot formation. To avoid collision, the formation of robots reformed in optimal size by estimating the distance between the robot and an obstacle in real time. When the leader robot suddenly changes its direction, waypoints of follower robots are switched and the formation is quickly reconstructed. This prevents follower robots from colliding with each other and reduces their radius of movement and allows them to follow the leader robot at higher speed. The proposed method which is inherently a flexible control of multi-robot formation guarantees collision avoidance and prevents sudden changes in waypoints of the system by gradually changing its size. The validity of the proposed method is demonstrated via simulation and experimental results.
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spelling doaj.art-1166f93d251d41d68471d23ceb679a372022-12-22T01:37:58ZengSAGE PublishingAdvances in Mechanical Engineering1687-81402019-06-011110.1177/1687814019857339Variable formation control of multiple robots via VRc and formation switching to accommodate large heading changes by leader robotSung-Gil Wee0Yanyan Dai1Tae Hun Kang2Suk-Gyu Lee3DGIST, Daegu, Republic of KoreaDepartment of Electrical Engineering, Yeungnam University, Gyeongsan, Republic of KoreaDGIST, Daegu, Republic of KoreaDepartment of Electrical Engineering, Yeungnam University, Gyeongsan, Republic of KoreaThis article describes a novel multi-robot formation control based on a switching technique that allows follower robots to maintain formation when the leader robot’s direction changes rapidly or unexpectedly. The formation pattern is determined using Virtual Robot’s Center of the multi-robot formation. To avoid collision, the formation of robots reformed in optimal size by estimating the distance between the robot and an obstacle in real time. When the leader robot suddenly changes its direction, waypoints of follower robots are switched and the formation is quickly reconstructed. This prevents follower robots from colliding with each other and reduces their radius of movement and allows them to follow the leader robot at higher speed. The proposed method which is inherently a flexible control of multi-robot formation guarantees collision avoidance and prevents sudden changes in waypoints of the system by gradually changing its size. The validity of the proposed method is demonstrated via simulation and experimental results.https://doi.org/10.1177/1687814019857339
spellingShingle Sung-Gil Wee
Yanyan Dai
Tae Hun Kang
Suk-Gyu Lee
Variable formation control of multiple robots via VRc and formation switching to accommodate large heading changes by leader robot
Advances in Mechanical Engineering
title Variable formation control of multiple robots via VRc and formation switching to accommodate large heading changes by leader robot
title_full Variable formation control of multiple robots via VRc and formation switching to accommodate large heading changes by leader robot
title_fullStr Variable formation control of multiple robots via VRc and formation switching to accommodate large heading changes by leader robot
title_full_unstemmed Variable formation control of multiple robots via VRc and formation switching to accommodate large heading changes by leader robot
title_short Variable formation control of multiple robots via VRc and formation switching to accommodate large heading changes by leader robot
title_sort variable formation control of multiple robots via vrc and formation switching to accommodate large heading changes by leader robot
url https://doi.org/10.1177/1687814019857339
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AT taehunkang variableformationcontrolofmultiplerobotsviavrcandformationswitchingtoaccommodatelargeheadingchangesbyleaderrobot
AT sukgyulee variableformationcontrolofmultiplerobotsviavrcandformationswitchingtoaccommodatelargeheadingchangesbyleaderrobot