1. Advanced Institute of Manufacturing with High-tech Innovation, National Chung Cheng University, Chia-Yi, Taiwan
2. College of Electronics, Communication, and Physics, Shandong University of Science and Technology, Shandong Province, China
3. Department of Electrical Engineering, National Chung Cheng University, Chia-Yi, Taiwan
4. School of Mechanical and Manufacturing, Engineering, The University of New South Wales, Sydney, Australia