作者单位: | Guici Chen(Department of Control Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,P.R.China;College of Science,Wuhan University of Science and Technology,Wuhan 430081,P.R.China);Xiaoping Wang(Department of Control Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,P.R.China) |