Jinchun Hu,associate professor, born in 1972, graduated from Nanjing University of Science & Technology. He received the B.Eng and Ph.D. degrees in control science and engineering in 1994 and 1998, respectively. Now he works at the Department of Mechanical Engineering, Tsinghua University. His current research interests include modern control theory and control systems, ultra-precision measurement principles and methods, micro/nano motion control system analysis and realization, special driver technology and device for precision motion systems, and super-precision measurement & control.