1. Automation, University of Science and Technology of China, 12652 Hefei, Anhui, China, 230026 (e-mail: lqj0414@mail.ustc.edu.cn)
2. Automation, University of Science and Technology of China, 12652 Hefei, Anhui, China, 230026 (e-mail: sa010096@mail.ustc.edu.cn)
3. Automation, University of Science and Technology of China, 12652 Hefei, Anhui, China, 230026 (e-mail: lgxin16@mail.ustc.edu.cn)
4. University of Science and Technology of China, 12652 Hefei, China, 230026 (e-mail: zjli@ieee.org)
5. Hefei, Anhui, China, 230026 (e-mail: hsxia@ustc.edu.cn)
6. Mechanical Engineering, Concordia University, Montreal, Quebec, Canada, H3G 1M8 (e-mail: cysu@alcor.concordia.ca)