Filters








5,100 Hits in 5.4 sec

Consensus and formation control onSE(3)for switching topologies

Johan Thunberg, Jorge Goncalves, Xiaoming Hu
2016 Automatica  
This paper addresses the consensus problem and the formation problem on SE(3) in multi-agent systems with directed and switching interconnection topologies.  ...  For these two control laws we provide conditions on the initial rotations and the connectivity of the graph such that the system reaches consensus on SO(3).  ...  Introduction This work addresses the problem of continuous time consensus and formation control on SE(3) for switching interconnection topologies.  ... 
doi:10.1016/j.automatica.2015.12.035 fatcat:ul3mct3lrbdo5ijhbi6d2vfyty

Passivity-Based Attitude Synchronization in $SE(3)$

Y. Igarashi, T. Hatanaka, M. Fujita, M.W. Spong
2009 IEEE Transactions on Control Systems Technology  
Finally, the performance of our developed control laws is demonstrated through both numerical simulation and experiments on a planar (2-D) test bed.  ...  In this paper, we especially focus on one of the motion coordination problems on (3) called attitude synchronization.  ...  Kobayashi for invaluable help in carrying out the experiments.  ... 
doi:10.1109/tcst.2009.2014357 fatcat:iualzwqcyzfdvmskudvv67f6pq

Passivity-based output synchronization in SE(3)

Yuji Igarashi, Takeshi Hatanaka, Masayuki Fujita, Mark W. Spong
2008 2008 American Control Conference  
We develop a velocity control law, which is defined only by local information i.e. information of neighbors on position errors and relative orientations.  ...  In this paper, we address an output synchronization problem in the Special Euclidean group of dimension three (SE(3)) under the situation that rigid-bodies modeled in SE(3) exchange information along strongly  ...  Kobayashi for invaluable help in carrying our the experiments.  ... 
doi:10.1109/acc.2008.4586578 dblp:conf/amcc/IgarashiHFS08 fatcat:u2tg5ze2gbbwjc2nye2ojaaxwm

Decentralised attitude synchronisation of multiple rigid bodies on lie group SO(3)

Kobra Ghasemi, Jafar Ghaisari, Mohamad R. Pouryayevali
2018 IET Control Theory & Applications  
Here, the global and coordinate-free approach has been applied to study the leaderless attitude synchronisation problem of multiple rigid bodies with kinematic evolving on Lie group SO(3).  ...  A decentralised consensus law based on the gradient of a smooth cost function which depends on the relative attitude of neighbouring agents is proposed.  ...  , disturbance, and switching graph topology.  ... 
doi:10.1049/iet-cta.2017.0910 fatcat:lirotj6fxreihcqlegtya2wyoy

Passivity-based output synchronization and flocking algorithm in SE(3)

Yuji Igarashi, Takeshi Hatanaka, Masayuki Fujita, Mark W. Spong
2008 2008 47th IEEE Conference on Decision and Control  
Using the notion of algebraic connectivity, we then establish a connection between the speed of convergence and the structure of the interconnection graph in SE(3).  ...  This paper addresses passivity-based output synchronization and a collision avoidance problem of rigid bodies in the Special Euclidean group SE(3) under the assumption that the rigid bodies exchange information  ...  control of satellites and formation control of aircraft [3] [4] [5] .  ... 
doi:10.1109/cdc.2008.4739009 dblp:conf/cdc/IgarashiHFS08 fatcat:peozzqcqdnc53g74x3lgqrzp4i

Multi-Agent Systems with Dynamical Topologies: Consensus and Applications

Yao Chen, Jinhu Lu, Xinghuo Yu, David J. Hill
2013 IEEE Circuits and Systems Magazine  
to review the main advances in the consensus of mAs with dynamical topology, including several fundamental models and the corresponding methods. the main purpose is to promote this emerging topic on multi-agent  ...  systems, with emphasis on the interdisciplinary interest from the circuits and systems engineering communities.  ...  DP130104765 and DP0986376.  ... 
doi:10.1109/mcas.2013.2271443 fatcat:c2g6kjcnevg6hgcemlqn76xnzy

Nonlinear consensus protocols for multi-agent systems based on centre manifold reduction

Li Yu-Mei, Guan Xin-Ping
2009 Chinese Physics B  
/r"uu-t, Lhlfl€ "ro Noniinear consensus protocols for dynamic directed networks of multi-agent systems with fixed and switching topologies are investigated separately in this paper.  ...  Simulation results show that the nonlinear consensus protocols proposed are more effective than the linear protocols for the formation control of the agents and they are an improvement over existing protocols  ...  for a gestion control in communication networks, swarms network of agents with switching topology and timeof autonomous vehicles or robots, autonomous formadelays.  ... 
doi:10.1088/1674-1056/18/8/040 fatcat:ddxkpwpwfjf2ppldi2n424awwu

Distributed observer-based consensus protocol for descriptor multi-agent systems

Wenhai Chen, Lixin Gao, Xiaole Xu, Jia Cui
2015 Proceedings of the Institution of mechanical engineers. Part I, journal of systems and control engineering  
under switching topology case.  ...  Some sufficient consensus conditions are established to guarantee the descriptor multi-agent system achieves consensus under directed fixed topology and balanced switching topology respectively.  ...  Introduction During the past decade,many researchers have focused on the coordination control problem, owing to its useful application in many areas such as formation control, flocking and swarming, cooperative  ... 
doi:10.1177/0959651815600651 fatcat:abr7koeri5e5ncrgnztjgzffhq

Insights into Acinetobacter baumannii fatty acid synthesis 3-oxoacyl-ACP reductases

Emily M. Cross, Felise G. Adams, Jack K. Waters, David Aragão, Bart A. Eijkelkamp, Jade K. Forwood
2021 Scientific Reports  
We show that ΔAbHMwfabG is impaired for growth in nutrient rich media and pellicle formation. We also modelled a third 3-oxoacyl-ACP reductase, which we annotated as AbSDR.  ...  Of particular interest is fatty acid synthesis, vital for the formation of phospholipids, lipopolysaccharides/lipooligosaccharides, and lipoproteins of Gram-negative envelopes.  ...  BAE is supported by the National Health and Medical Research Council (Project Grant 11559752).  ... 
doi:10.1038/s41598-021-86400-1 pmid:33782435 fatcat:76qupnvs6vekbpje3q3cphvyaa

Consensus of Singular Multi-agent Systems Based on Networked Predictive Control

Xin-Rong Yang, Guo-Ping Liu
2014 IFAC Proceedings Volumes  
Furthermore, based on the output feedback, observer and the networked predictive control scheme, a novel protocol is proposed in this paper.  ...  The given conditions depend on not only the topologies of singular multi-agent systems but also the structure properties of each agent dynamics.  ...  The future research will study singular multi-agent systems with time-varying networked delays, stochastic or switching topologies, and agents described by switching systems or hybrid systems, and so on  ... 
doi:10.3182/20140824-6-za-1003.01500 fatcat:dl4zk2fuxzaypnkaftcmk2v6pu

2021 Index IEEE Transactions on Systems, Man, and Cybernetics: Systems Vol. 51

2021 IEEE Transactions on Systems, Man & Cybernetics. Systems  
Departments and other items may also be covered if they have been judged to have archival value. The Author Index contains the primary entry for each item, listed under the first author's name.  ...  The primary entry includes the coauthors' names, the title of the paper or other item, and its location, specified by the publication abbreviation, year, month, and inclusive pagination.  ...  Nonlinear Pose Filters on the Special Euclidean Group SE(3) With Guaranteed Transient and Steady-State Performance.  ... 
doi:10.1109/tsmc.2021.3136054 fatcat:b5hcsfwjw5hllpenqmaq6wpke4

Containment control for singular multi-agent systems with an internal model compensator

Hongjing Liang, Yu Zhou, Huaguang Zhang
2020 Science China Information Sciences  
In [3], both time-invariant and changing topologies were considered for multi-agent systems to solve the consensus problem.  ...  Cooperative control has been used in practical applications, such as vehicle formations and switching networks.  ...  In [3] , both time-invariant and changing topologies were considered for multi-agent systems to solve the consensus problem.  ... 
doi:10.1007/s11432-018-9780-3 fatcat:d6otjaf6zretdkt7fjylze43me

Synchronization control for a swarm of unicycle robots: analysis of different controller topologies

H. Gutiérrez, A. Morales, H. Nijmeijer
2017 Asian journal of control  
accessing publications that users recognise and abide by the legal requirements associated with these rights. • Users may download and print one copy of any publication from the public portal for the  ...  Link to publication General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of  ...  The topology of the connectivity graph can be changed based on the formation structure and the robots can switch between leader and follower behaviours.  ... 
doi:10.1002/asjc.1497 fatcat:onyepd3buvh6bmfr5aognizylq

Toward a New Twist in Hox and TALE DNA-Binding Specificity

Samir Merabet, Ingrid Lohmann
2015 Developmental Cell  
Crystal structures showed a predominant role of the hexapeptide (HX) motif for complex formation on the consensus sequences.  ...  Note that AbdA could also form DNA-binding complexes with TALE cofactors on E3N and DllR. The topology of Meis binding sites is speculative on E,3N.  ...  A key function of RAC1 is the control of ARP2/3-mediated branched actin polymerization, which is required for the formation of membrane protrusions that drive mesenchymal motility in virtually all cells  ... 
doi:10.1016/j.devcel.2015.01.030 pmid:25669880 fatcat:gw3avkzxhvgpfnqaetdqyubqxi

3 Graphetics [chapter]

2022 Writing Systems and Their Use  
In the following, we will focus exclusively on the visual form of writing.  ...  The following section (Section 3.3) is then devoted to handwriting and typography, the two central ways in which writing is materialised, and addresses the most important concepts and questions in their  ...  And third, the testing of possible effects through a variety of experimental designs to control for design-dependent outcome tendencies.  ... 
doi:10.1515/9783110757835-003 fatcat:2secy7r5hvbpxnyfg7ud52lnte
« Previous Showing results 1 — 15 out of 5,100 results