1. School of Automation, Guangdong University of Technology, Guangzhou 510006, China, and also with the Guangdong Key Laboratory of IoT Information Technology, Guangdong University of Technology, Guangzhou 510006, China.
2. School of Data and Computer Science, Sun Yat-sen University, Guangzhou 510275, China (e-mail: zhaohli1989@hotmail)
3. School of Automation, Guangdong University of Technology, Guangzhou 510006, China, and also with the 111 Center for Intelligent Batch Manufacturing Based on IoT Technology, Guangzhou 510006, China.
4. School of Automation, Guangdong University of Technology, Guangzhou 510006, China, and also with the Guangdong-HongKong-Macao Joint Laboratory for Smart Discrete Manufacturing, Guangzhou 510006, China.