1. School of Mechanical Engineering and Automation, Northeastern University, Shenyang, P. R. China
2. Department of Electromechanical Engineering, University of Macau, Macau, P. R. China
3. School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou, P. R. China
4. Foshan Graduate School of Innovation, Northeastern University, Foshan, P. R. China