[1] Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming,650500, China
[2] College of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan,030024, China
[3] CSSC-the 705th Research Institute Kunming, Kunming,650118, China
[4] College of Mechanical and Electrical Engineering, Shandong University of Science and Technology, Qingdao,266590, China