“…Email: r.kahani@srbiau.ac.ir separation and cohesion problems, the graph theory is used to analyse consensus problems in Ren and Beard (2005), and a Lyapunov-based approach is proposed for jointly connected interconnection topologies in Hong, Gao, Cheng, and Hu (2007). Later, in Zhang, Chen, Stan, Zhou, and Maciejowski (2008) and Zhang, Chen, and Zhou (2009), the role of predictive mechanisms is used to reduce the communication cost and improve consensus in the forming and evolving of flocks/swarms using both numerical simulations and mathematical analyses. Recently, more breakthroughs on Reynolds flocking model have been achieved including a discussion of flocking in case of speed sensor failure in Wen, Duan, Li, and Chen (2012) and flocking control problem of multi-agent systems with connectivity preserving mechanism in another work by Wen, Duan, Su, Chen, and Yu (2012) and the model predictive control flocking of a networked multi-agent system is proposed based on position measurements in Zhan and Li (2013).…”