1. Mechanical Engineering School of Xiangtan University, Xiangtan 411105, P. R. China
2. Foshan Green Intelligent Manufacturing Research Institute of Xiangtan University, Foshan 528311, P. R. China
3. Jianglu Electromechanical Group Co., Ltd, Jianglu, P. R. China
4. School of Mechanical Engineering, Xi’ an Polytechnic University, Xi’an, Shanxi 710049, P. R. China