1. School of Electrical Engineering, Yanshan University, Qinhuangdao 066004, China
2. Hebei Construction Material Vocational and Technical College, Qinhuangdao 066004, China
3. School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China
4. School of Vehicle and Energy, Yanshan University, Qinhuangdao 066004, China
5. School of Mechanical and Aerospace Engineering, Jilin University, Changchun 130022, China