1. North China University of Science and Technology, School of Electrical Engineering, Tangshan, Hebei, ChinabUniversity of Calgary, Department of Mechanical and Manufacturing Engineering, Calgary, Alberta, Canada
2. Northeastern University, School of Information Science and Engineering, Shenyang, Liaoning, China
3. University of Calgary, Department of Mechanical and Manufacturing Engineering, Calgary, Alberta, Canada
4. North China University of Science and Technology, School of Electrical Engineering, Tangshan, Hebei, China