1. School of Automation, Southeast University, Nanjing, P.R. China
2. Key Laboratory of Measurement and Control of Complex Systems of Engineering, Ministry of Education, Southeast University, Nanjing, P.R. China
3. Key Laboratory of Advanced Process Control for Light Industry (Ministry of Education), Institute of Automation, Jiangnan University, Wuxi,China
4. Department of Electronic Information Engineering, Anhui Business College, Wuhu, P.R. China