1. Associate Professor, Dept. of Mechatronic Engineering, Southwest Petroleum Univ., Chengdu, Sichuan 610500, China.
2. Master’s Student, Dept. of Mechatronic Engineering, Southwest Petroleum Univ., Chengdu, Sichuan 610500, China.
3. Professor, Dept. of Mechatronic Engineering, Southwest Petroleum Univ., Chengdu, Sichuan 610500, China (corresponding author).
4. Doctoral Student, Dept. of Mechatronic Engineering, Southwest Petroleum Univ., Chengdu, Sichuan 610500, China.