1. Research Assistant, School of Automation, Qingdao Univ., Qingdao, Shandong 266071, China (corresponding author). ORCID: .
2. Professor, College of Environmental Science and Engineering, Qingdao Univ., Qingdao, Shandong 266071, China.
3. Assistant Professor, College of Environmental Science and Engineering, Qingdao Univ., Qingdao, Shandong 266071, China.
4. Research Assistant, Dept. of Mechanical and Aerospace Engineering, Univ. of California Davis, Davis, CA 95616.