Xi Chen,  Ph.D.

Associate Professor

Center for Intelligent and Networked Systems

Department of Automation, Tsinghua University,  Beijing 100084, China

Tel: +86 (10) 62783946     Fax: +86 (10) 6279 6115

Email: bjchenxi@tsinghua.edu.cn

 Education

Ph. D. in Operation Research, The Chinese University of Hong Kong, 2000

MS in Control Theory, Nankai University, Tianjin, China, 1989

BS in Control Theory, Nankai University, Tianjin, China, 1986

  Working Experience

Assistant Professor, Software Engineering Institute at Beijing University of Aeronautics and Astronautics , 1989.7-1996.9

Post-doctoral Fellow, Information Communication Institute of Singapore, 2000.11-2002.2

Post-doctoral Fellow, Dept. of Systems Engineering & Engineering  Management,  The Chinese University of Hong Kong, 2002.3-2003.6

Associate Research Fellow, Center of Intelligent and Networked Systems, Tsinghua University, 2003.7-

  Expertise and Research Interests

Stochastic control and optimization

Wireless sensor networks

  Academic/Social Activities and Memberships

Reviewer of IEEE Transactions on Automatic Control, Automatica, SIAM Journal of Control and Optimization

   Grants and Contracts / Research Projects

Regular Project of National Natural Science Foundation of China

United Technology Research Center

   Honors and Awards

Second Prize of National Natural Science Award, China, 2009

Outstanding Thesis Award 2000, Faculty of Engineering, The Chinese University of Hong Kong

Second Prize of Science and Technology, General Cooperation of Aeronautics of China, 1996

   Academic Achievements

Selected Publications

X. Chen, Y. C. Ho,  H. Bai, Complete coverage and point coverage in randomly distributed sensor network, Automatica, 2009, 45:1549-1553.

L. Xia, X. Chen and X. R. Cao, Policy iteration of customer-average performance in queueing systems, Automatica, 2009, 45:1639-1648.

Xu Y K, Chen X, Optimization of dependently controlled jump rates of JLQG problem, Asian Journal of Control, 2009, 11(4):432-439

Zhang K J,Xu Y K, Chen X, Cao X R. Policy iteration based feedback control. Automatica, 2008, 44:1055-1061.

Xi Chen, Qianchuan Zhao, Xiaohong Guan, Energy-efficient sensing coverage and communication for wireless sensor networks, Jrl. Sys Sci & Complexity (2007)20: 225-234.

X. Chen,  H. Bai, L. Xia, and Y. C. Ho, Design of a Sensor Network for Target Detection, Automatica. 2007, 43:1713-1722.

H. Bai, X. Chen, B. Li, and D. Han, A Location-free Algorithm of Energy-Efficient Connected Coverage for High Density Wireless Sensor Networks, Journal of Discrete Event Dynamic Systems: Theory and Applications,(2007)17:1-21.

H. Bai, X. Chen, Y.C. Ho, and X. Guan, Percentage Coverage Configuration in Wireless Sensor Networks, Lecture Notes in Computer Science 3758, 2005, pp. 780-791

Li Xia, X. Chen and Xiaohong Guan. A New Gradient-Based Routing Protocol in Wireless Sensor Networks. Lecture Notes in Computer Science,3605: pp.318-325, 2005.

X. Chen, X. Y. Zhou, " Stochastic LQ control with conic constraints on an infinite time horizon",   SIAM Journal of Control and Optimization   Vol. 43,No.3,pp1120-1150 ..

M. Ait Rami, X. Chen, and X. Y. Zhou, " Discrete-time Indefinite LQ control with state and control dependent   noises", Journal of Global Optimization, Vol. 23, Issue 3-4, August 2002. pp 245-265

M. Ait Rami, X. Chen, J. B. Moore and X. Y. Zhou, " Solvability and asymptotic behavior of generalized Riccati equation arising in indefinite stochastic LQ controls ", IEEE Transactions on Automatic Control, Vol. 46, No. 3, March 2001. pp 428-440

X. Chen, X. Y. Zhou, "Deterministic near-optimal control with state constraints", Dynamics of Continuous,  Discrete and Impulsive Systems, Vol. 4, Dec, 1998. pp 513-526

Jianghai Li, Qing-Shan Jia, Xiaohong Guan, Xi Chen,Tracking Moving Object via a Sensor Network with Partial Information Broadcasting Scheme ,Accepted by 48th IEEE Conference on Decision and Control, Shanghai, China, October 16-18,2009.

Xu Y K, Chen X, Learning algorithm for LQG model with constrained control. IFAC World congress, Seoul Korea, July 2008.

Y. K. Xu and X. Chen, Discrete-time JLQG model with dependently controlled jump probabilities: an MDP-based approach, IEEE Multi-Conference on System and Control, Singapore, Oct. 2007.

H. Bai, X. Chen, Y. C. Ho, and Xiaohong Guan, Information Coverage Configuration with Energy Preservation in Large Scale Wireless Sensor Networks,  IEEE International Conference on Computer and Information Technology (CIT’2006), Seoul, Korea, September 20-22, 2006

H. Bai, Xi Chen, X. Guan, Coverage Preserving in Wireless Sensor Networks with Different Sensing Radii, Proceedings of 2006 IEEE International Conference on Networking, Sensing and Control. pp. 54-59. Ft. Lauderdale, Florida, USA,April,23-25,2006.

X. Chen, Y. C. Ho, J. Zhang, H. Bai, Probabilistic Forwarding (ProFor) for large scale sensor networks, Proceedings of 2006 IEEE International Conference on Networking, Sensing and Control. pp. 963-968. Ft. Lauderdale, Florida, USA,April,23-25,2006.

Xu Y K,Chen X, Cao X R. Optimization for controlled jump rates of JLQG problem. Proceedings of 24th Chinese Control Conference, 2005: 378-383.