1. College of Electronics and Information Engineering, Suzhou University of Science and Technology, 66339 Suzhou, Jiangsu, China, 215009 (e-mail: shguo@usts.edu.cn)
2. Department of Electrical and Electronic Engineering, Mie University, 12946 Tsu, Mie, Japan, 514-8507 (e-mail: Weijie_Ren@foxmail.com)
3. School of Electrical Engineering, Korea University, Seoul, Korea (the Republic of), 02841 (e-mail: hironaka@korea.ac.kr)
4. School of Automation, Guangdong University of Petrochemical Technology, 117811 Maoming, Guangdong, China, (e-mail: wencl@hdu.edu.cn)
5. Department of Engineering, The King's College London, London, United Kingdom of Great Britain and Northern Ireland, WC2R 2LS (e-mail: hak-keung.lam@kcl.ac.uk)