1. School of Mechanical Engineering, Zhejiang Sci-Tech University, Zhejiang 310018, China
2. School of Physics and Electronic Engineering, Fuyang Normal University, Fuyang 236041, China
3. Lab of Mechanical Structure & Biomechanics, Anhui Agricultural University, Hefei 230036, China
4. Hefei Gotion High-tech Power Energy Co., Ltd, Hefei 230036, China