[1] OLFATI-SABER R.Flocking for multi-agent dynamic systems:algorithms and theory[J].IEEE Transactions on Automatic Control200651(3):401-420.
[2] WEI HCHEN X B.Flocking for multiagent systems with partial information exchange based on inclusion principle[J].Mathematical Problems in Engineering20202020.doi:10.1155/2020/6424691.
[4] CHEN JZHANG XXIN Bet al.Coordination between unmanned aerial and ground vehicles:a taxonomy and optimization perspective[J].IEEE Transactions on Cybernetics 201646(4):959-972.
[5] WEI HCHEN X B.Flocking for multiple subgroups of multi-agents with different social distancing[J].IEEE Access 20208:164705-164716.
[6] KUMAR MGARG D PKUMAR V.Segregation of hetero-geneous units in a swarm of robotic agents[J].IEEE Transactions on Automatic Control201055(3):743-748.
[7] SANTOS V GPIMENTA L C ACHAIMOWICZ L.Segregation of multiple heterogeneous units in a robotic swarm[C]//International Conference on Robotics and Automation (ICRA).Hong Kong:IEEE2014:1112-1117.
[8] GRO RMAGNENAT SMONDADA F.Segregation in swarms of mobile robots based on the Brazil nut effect[C]//IEEE/RSJ International Conference on Intelligent Robots and Systems.St.LouisMO:IEEE2009:4349-4356.
[9] INCIO F RMACHARET D GCHAIMOWICZ L.PSO-based strategy for the segregation of heterogeneous robotic swarms[J].Journal of Computational Science201931:86-94.
[11] REYNOLDS C.Flocksherds and schools:a distributed behavior model[J].Computer Graphics198721(4):25-34.
[12] LUO X YLI S BGUAN X P.Flocking algorithm with multi-target tracking for multi-agent systems[J].Pattern Recognition Letters201031(9):800-805.
[17] LIU M YYANG P PLEI X K.Self-organized fission control for flocking system[J].Journal of Robotics20152015.doi:10.1155/2015/321781.
[19] YANG P PLIU M YLEI X Ket al.A novel control algorithm for the self-organized fission behavior of flocking system with time delay[J].International Journal of ControlAutomation and Systems201614(4):986-997.
[20] YANG P PYAN M DSONG J Cet al.Self-organized fission-fusion control algorithm for flocking systems based on intermittent selective interaction[J].Complexity20192019. doi:10.1155/2019/2187812.
[23] SU H SWANG X FLIN Z L.Flocking of multi-agents with a virtual leader[J].IEEE Transactions on Automa-tic Control200954(2):293-307.
[24] JING G SZHENG Y SWANG L.Flocking of multi-agent systems with multiple groups[J].International Journal of Control201487(12):2573-2582.
[25] CHEN Z FCHU T GZHANG J L.Swarm splitting and multiple targets seeking in multi-agent dynamic systems[C]//The 49th IEEE Conference on Decision and Control (CDC).AtlantaGA:IEEE2010:4577-4582.
[26] CHEN Z FLIAO H MCHU T G.Clustering in multi-agent swarms via medium-range interaction[J].Europhysics Letters201196(4).doi:10.1209/0295-5075/ 96/40015.
[27] CHEN Z FLIAO H MCHU T G.Aggregation and splitting in self-driven swarms[J].Physica A:Statistical Mechanics and its Applications2012391(15):3988-3994.
[28] HA S YKO DZHANG Y Let al.Emergent dynamics in the interaction of Cucker-Smale ensembles [J].Kinetic and Related Models201710(3):689-723.
[29] FANG DHA S YJIN S.Emergent behaviors of the Cucker-Smale ensemble under attractive-repulsive couplings and Rayleigh frictions[J].Mathematical Models and Methods in Applied Sciences201929(7):1349-1385.
[30] CHO JHA S YHUANG F Met al.Emergence of bi-cluster flocking for agent-based models with unit speed constraint[J].Analysis and Applications201614(1):39-73.
[31] CHO JHA S YHUANG F Met al.Emergence of bi-cluster flocking for the Cucker-Smale model[J].Mathematical Models and Methods in Applied Sciences2016 26(6):1191-1218.
[32] RU L NXUE X P.Multi-cluster flocking behavior of the hierarchical Cucker-Smale model[J].Journal of the Franklin Institute2017354(5):2371-2392.
[33] FAN M CZHANG H TWANG M M.Bipartite flocking for multi-agent systems[J].Communications in Nonli-near Science and Numerical Simulation201419(9):3313-3322.
[34] XIAO Q ZLIU H LWANG Xet al.A note on the fixed-time bipartite flocking for nonlinear multi-agent systems[J].Applied Mathematics Letters202099.doi:10.1016/j.aml.2019.07.004.
[35] YU J JYU S H.An improved fixed-time bipartite flock-ing protocol for nonlinear multi-agent systems[J].Inter-national Journal of Control2020.doi:10.1080/00207179.2020.1828623.
[36] LIU H LWANG XHUANG Yet al.A new class of fixed-time bipartite flocking protocols for multi-agent systems[J].Applied Mathematical Modelling202084:501-521.