Affiliation: | 1. Department of Control Science and Engineering , Huazhong University of Science and Technology , Wuhan, Hubei, 430074, P.R. China;2. College of Mathematics and Information Science , Guangxi University , Nanning, Guangxi, 530004, PR China;3. Department of Electrical and Computer Engineering , National University of Singapore , 10 Kent Ridge Crescent, Singapore |