1. Gansu Provincial Research Institute of Product Quality Supervision and Inspection,Department of Product Quality Supervision and Inspection,Lanzhou,China
2. Lanzhou University of Technology,College of Electrical and Information Engineering,Lanzhou,China
3. Gansu Guokai New Energy Equipment Co., LTD,Department of Mechanical Engineering,Lanzhou,China
4. Lanzhou University of Technology,College of Network,Lanzhou,China