1. School of Ocean Engineering, Harbin Institute of Technology at Weihai, Weihai 264209, China
2. Weihai Key Laboratory of Intelligent Operation and Maintenance, Harbin Institute of Technology, Weihai 264209, China
3. School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
4. Aeronautical Engineering Institute, Civil Aviation University of China, Tianjin 061102, China
5. Juxian Agricultural Machinery Development Service Center, Rizhao 222113, China