1. School of Electrical and Automation Engineering, Nanjing Normal UniversityNanjingJiangsu210042People's Republic of China
2. Department of Electrical and Computer EngineeringThe University of Texas at San AntonioSan AntonioTX78249USA
3. Jiangsu Key Laboratory of 3D Printing Equipment and ManufacturingNanjingJiangsu210042People's Republic of China
4. School of Automation, Southeast UniversityNanjingJiangsu210096People's Republic of China
5. School of Energy and Mechanical Engineering, Nanjing Normal UniversityNanjingJiangsu210042People's Republic of China