Chen is an expert in control theory at the Institute of Systems Science, AMSS, of the Chinese Academy of Sciences (CAS) in Beijing. His research interests are mainly in stochastic systems, including system identification, adaptive control, and stochastic approximation and its applications to systems, control, and signal processing. In addition to his research, he is also active in writing educative reviews and monographs. He has authored/co-authored more than 200 journal papers and the following four monographs: Recursive Identification and Parameter Estimation, Stochastic Approximation and its Applications, Identification and Stochastic Adaptive Control, and Recursive Estimation and Control for Stochastic Systems. An academician of CAS, IEEE Fellow, IFAC Fellow, he has received the IFAC Outstanding Service Award.