Wu Jun Born in 1983, he received B.S. degree from Nanjing University of Aeronautics and Astronautics in 2005, and now is a Ph. D. candidate there. His main research interest lies in cooperative control. E-mail: wj_nuaa@163.com Corresponding author. Tel: +86-25-84891842 E-mail address: yplac@nuaa.edu.cn