Aug. 2007-Jun. 2011Ph.D., School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore
Research topic: Control of Single and Multiple Agent Systems with Input and Communication Delays
Sep. 2004-Jun. 2007M.Eng., School of Control Science and Engineering, Shandong University, China
Sep. 2000-Jun. 2004B.Eng., School of Control Science and Engineering, Shandong University, China
Mar. 2017 – PresentProfessor, Shandong University
Jun. 2011 - Feb. 2017Senior Research Fellow,Berkeley Education Alliancefor Research inSingapore(BEARS) (Nanyang Technological University, Singapore - University of California at Berkeley)
Research work -Cooperative control system design of Air Conditioning and Mechanical Ventilation (ACMV) cooling system.
Establish indoor room temperature distribution dynamic model and indoor air quality (IAQ) model.
Project title:New Generation HVAC Systems - Total Energy Efficiency Solutions (2012~2017, National Research Foundation, Competitive Research Programme, 10m SGD)
Research work -Study and develop distributed optimization approach for ACMV system for energy consumption reduction.
Develop distributed Stochastic Model Predictive Control (SMPC) strategy for terminal unit control of Heating, Ventilation and Air Conditioning (HVAC) system.
Project title:Distributed fluid network system modeling, estimation and control (2014~2016, NSF of China, no. 61304045, 250k CNY)
Research work -Provide distributed model of network flow systems and develop distributed estimation algorithm.
Investigate distributed controller of network flow systems.
Estimation of nonlinear flow system with unreliable network communication.
Optimize network flow system based on distributed optimization approach.
Project title:Stochastic H∞Preview Control (2013~2015, NSF of China, no. 61203045, 240k CNY)
Research work -Study optimal control of stochastic delay system. Using maximum principle to develop optimal cost function and design optimal controller.
Project title:Distributed - Cooperative Information Processing and Control (2009~2013, Temasek Labs, no. POD0914267, 482k SGD)
Research work -Develop distributed cooperative control algorithm for multi-agent systems in difference scenarios, including transmission delays, noises, and data rate constraint.
Implementation of distributed cooperative control and formation control algorithms to AmigoBot systems.
Project title:Cooperative Estimation and Control Theory with Application in Wireless Sensor Networks (2009~2010, NSF of China, no. 60828006, 200k CNY)
Research work -Study and develop distributed consensus control in wireless sensor network.
Given consensus control protocol, provide network connectivity condition for guaranteeing consensus.
Project title:Modeling, control and optimization for complex sensor and control networks (2008~2010, NSF of China, no. U0735003, 1.4m CNY)
Research work -Develop optimal control of complex systems especially for input delay systems. Based on dual principle and reorganization approach, provide the explicit form of optimal linear quadratic regulator and linear quadratic tracking in terms of 2D Riccati equation.
Project title:Observer-based robust fault diagnosis of linear time-delay system (2004~2006, NSF of China, no. 60374021, 200k CNY)
Research work -StudyH∞robust fault estimation of linear time-varying discrete-time system based on Krein space Kalman filtering theory.
Teaching Experience
2010 semester II
Tutorial class: Engineering Mathematics II
Engineering Laboratory: Testing and operation of a transformer
2010 semester I and 2009 semester I, II
Tutorial class: Engineering Mathematics II
Engineering Laboratory: Equipotential and electronic fields lab
2008 semester II
Tutorial class: Engineering Mathematics II
Research Interests
Academic Awards
2014 Outstanding reviewer of IET Control Theory & Applications
2013 Outstanding reviewer of Asian Journal of Control
2007 Singapore Government scholarship
2003 First-classprovincial prize of National Undergraduate Electronic Design Competition, China
1999 Second-class provincial prize of National mathematics Olympiad, China
Academic Services
Member of IEEE Control System Society Conference Editorial Board
Member of IEEE Control System Society Technical Committee on Nonlinear Systems and Control
International Program Committee, the 10th IEEE International Conference on Control & Automation, Hangzhou, China
International Program Committee, the 11th IEEE International Conference on Control & Automation, Taichung, Taiwan
International Program Committee, the 13th IEEE International Conference on Control, Automation, Robotics and Vision, Singapore
International Program Committee, the 11th IEEEInternational Conference on Automation Science and Engineering, Gothenburg, Sweden
International Program Committee, the 14th IEEE International Conference on Control, Automation, Robotics and Vision, Phuket, Thailand
International Program Committee, the 2016 American Control Conference, Boston, MA, USA
International Program Committee, the 55th IEEE Conference on Decision and Control, Las Vegas, NV, USA
Publicity Chair, the 12th IEEE International Conference on Automation Science and Engineering, Dallas, US.
Publicity Chair, the 13th IEEE International Conference on Control & Automation, Ohrid, Macedonia
InvitedSession Chair, the 15th IEEE International Conference on Control & Automation,Edinburgh, Scotland, 2019
Science China Information Sciences Guest editor (Vol 60(7) 2017)
Reviewer for a number of international journals such as
IEEE Transactions on Automatic ControlAutomatica
SIAM Journal on Control and OptimizationInternational Journal of Robust and Nonlinear Control
IEEE Transactions on Signal ProcessingIEEE Transactions on Systems, Man, and Cybernetics
Applied Energy Control Engineering Practice
IEEE Transactions on Industrial ElectronicsIEEE Transactions on Control of Network Systems
Information Sciences IET Control Theory & Applications
System and Control Letter IEEE Transactions on Control Systems Technology
IEEE Control Systems MagazineAsian Journal of Control
Science China Information SciencesInternational Journal of Advanced Robotic Systems
International Journal of General SystemsJournal of the Franklin Institute
Journal of Systems Science and ComplexityIMA Journal of Mathematical Control and Information
Mathematical Problems in EngineeringJournal of Control Theory and Applications
International Journal of Systems ScienceMultidimensional Systems and Signal Processing
Optimization and Engineering International Journal of Distributed Sensor Networks
Neurocomputing International J of Modelling, Identification and Control
Transactions of the Institute of Measurement and Control
Reviewer of international conferences such as CDC, ACC, IFAC WC, ECC, CCC, CCDC, ASCC, ICARCV, ICCA, MSC, IECON.
Selected Publications
Publications in Premier Journals:
S. Liu, L. Xie, and S. Zhang, "Synchronization of a Class of Nonlinear Network Flow Systems,"International Journal of Robust and Nonlinear Control, preprint, 2015.
Y.Long,S.Liu, and L.Xie,"Consensus of Discrete Multi-agent System with Multiplicative Noises,"International Journal of Robust and Nonlinear Control, preprint, 2015.
S. Zhu,S. Liu, Y. C. Soh, L. Xie, "Performance Analysis of Averaging Based Distributed Estimation Algorithms with Additive Quantization Model,"Automatica, provisionally accepted, 2015.
S. Liu, L. Xie, and Z. Qiu, "Distributed Constrained Optimal Consensus and Convergence," IEEE Transactions on Automatic Control (full paper), under review, 2014.
Y. Li,S. Liu, S. Ding and M.-Y. Zhong,"State Estimation for a Class of Nonlinear Systems with Unknown Inputs over Fading Channels," Automatica (regular paper), under review, 2015.
C.Liu, L.Xie,S.Liu, andF. Liu,"Asynchronously-compensated synchronization algorithm for multiple harmonic oscillators with communication delay,"International Journal of Robust and Nonlinear Control, under review, 2014.
Z.Qiu,S.Liu, and L.Xie,"Distributed Optimal Consensus Control with Set Constraint,"Automatica, under review, 2014.
S. Liu, L. Xie, and H. Zhang, "Containment Control of Multi-agent Systems by Exploiting theControl Inputs of Neighbors,"International Journal of Robust and Nonlinear Control, vol.24, no.17, pp.2803-2818, 2014.
S. Liu, T. Li, L. Xie, M. Fu and J.-F. Zhang, "Continuous-Time and Sampled-Data Based Average Consensus with Logarithmic Quantizers," Automatica, vol. 49, pp. 3329-3336, 2013.
S. Liu, L. Xie, and H. Zhang, "Distributed Consensus for Multi-agent Systems with Delays and Noises in Transmission Channels," Automatica, vol. 47, no. 5, pp. 920-934, 2011 (regular paper).*
S. Liu, L. Xie, and F. Lewis, "Synchronization of Multi-agent Systems with Delayed Input Information from Neighbors," Automatica, vol. 47, no. 10, pp. 2152-2164, 2011 (regular paper).*
S. Liu, T. Li, and L. Xie,"Distributed Consensus for Multi-agent Systems with Communication Delays and Limited Data Rate," SIAM Journal on Control and Optimization,vol. 49, no. 6, pp. 2239-2262, 2011.
S. Liu, L. Xie, and H. Zhang, "Linear Quadratic Tracking Problem for Discrete-time Systems with Multiple Delays in Single Input Channel," International Journal of Robust and Nonlinear Control, vol. 20, pp. 1379-1394, 2010.
*:Automatica top 25 hottest articles from July to September 2011
Publications in Other Journals:
Y. Li,S. Liu, and Z. Wang,"Fault Detection for Linear Discrete Time-varying Systems with Intermittent Observations and Quantization Errors," Asian Journal of Control,preprint, 2015.
Y. Wu, X. He,S. Liu, and L. Xie, "Consensus of Discrete-Time Multi-Agent Systems with Adversaries and Time-Delays," International Journal of General Systems, vol. 43, pp. 402-411, 2014.
Y. Li,S. Liu, Z. Wang and X. Yan,"OnH∞fault estimator design for linear discrete time-varying systems under unreliable communication link,"Mathematical Problems in Engineering, vol. 2014, p. 10, 2014.
S. Liu, L. Xie, and H. Zhang, "Mean Square ContainmentControl of Multi-Agent Systemswith Transmission Noises,"Acta Automatica Sinica, vol. 39, pp. 1787-1795, 2013. (special issue)
Y. Li,S. Liu, and Z. Wang, "Fault Detection for Linear Discrete Time-Varying Systems with Measurement Packet Dropping,"Mathematical Problems in Engineering, vol. 2013, p. 9, 2013.
G. Jing, L. Jia, L.-h. Xie, Q.-l. Hu, andS. Liu, "Fluctuation control for many-to-one routing in wireless sensor networks," The Journal of China Universities of Posts and Telecommunications, vol. 19, pp. 35-44, 2012.
S. Liu, L. Xie, and H. Zhang,"Infinite Horizon LQR for Systems with Multiple Delays in a Single Input Channel," Journal of Control Theory and Applications, vol. 8, pp. 368-374, 2010.
M.-Y. Zhong,S. Liu, and H.-H. Zhao, "Krein Space-basedH∞Fault Estimation for Linear Discrete Time-varying Systems," Acta Automatica Sinica, vol. 34, pp. 1529-1533, 2008.
S. Liu, M.-Y. Zhong, "TheH∞Fault Estimation for Linear Discrete Time-varying Systems," Journal of Shandong University (Engineering Science) (in Chinese), vol. 37, pp. 36-40, 2007.
Publications in Conferences:
S. Zhu, Y. C. Soh, L. Xie andS. Liu, "Averaging Based Distributed Estimation Algorithm for Sensor Networks with Quantized and Directed Communication," accepted by 40th IEEE International Conference on Acoustics, Speech and Signal Processing, Brisbane, Australia, 2015.
S.Liu,L.XieandC. L.Liu,"Consensus based Constrained Optimization for Multi-agent Systems,"accepted by Conference on Decision and Control, 2015.
S.Zhu,S.Liu,J.Xu,Y.C.SohandL.Xie,"Averaging Method Based Distributed Estimation Algorithm for Rate-Constrained Sensor Networks,"accepted by Conference on Decision and Control, 2015.
Q.Jiao,S. Liu,F.Lewis,S.XuandL.Xie,"A Riccati Equation Approach to Cooperative Output Regulation of Heterogeneous Multi-agent Systems,"submitted to Chinese Control Conference, 2015.
S.Liu, Z.Qiu, L.Xie,"Continuous-time Distributed Convex Optimization with Set Constraints," 19th IFAC World Congress, Cape Town, South Africa, 2014, pp. 9762-9767.
Y.Long,S.Liu, L.Xie, K.H. Johansson,"A scenario-based distributed stochastic MPC for building temperature regulation,"in Proceedings of the 10th IEEE International Conference on Automation Science and Engineering, Taipei, Taiwan, 2014, pp. 1091-1096.
S.Liu, L.Xie,Y.Long, "Mean Square Average Consensus Over Directed Communication Topology With Measurement Noises,"in Proceedings of the 33th Chinese Control Conference, Nanjing, China, 2014, pp. 1609-1614.
Y.Long,S.Liu, L.Xie,"Consensus of Discrete Multi-Agent Systems with Multiplicative Noises," in Proceedings of the 11th International Conference on Control, Automation,Taichung, Taiwan,2014, pp. 255-260.
S.Liu, Y.Long, L.Xie and A.M. Bayen,"Cooperative Control of Air Flow for HVAC Systems,"in Proceedings of the 9th IEEE International Conference on Automation Science and Engineering, Madison, Wisconsin, 2013, pp. 422-427.
S. Liu, L. Xie, and H. Zhang, "Containment Control of Discrete-time Multi-agentSystems Based on Delayed Neighbours’ Information,"in Proceedings of the 9th Asian Control Conference, Istanbul, 2013, pp. 1-6.
S. Liu, L. Xie, and H. Zhang, "Mean Square Formation and Containment Control of Multi-Agent Systems under Noisy Measurements," in Proceedings of the 52nd IEEE Conference on Decision and Control, Florence, Italy, 2013, pp. 2181-2186.
S. Liuand L. Xie, "Average Consensus with Arbitrarily Coarse Logarithmic Quantizers," in Proceedings of the 12th International Conference on Control, Automation, Robotics and Vision,Guangzhou, 2012, pp. 1681-1685.
S. Liu, L. Xie, and W. Cai, "Cooperative Control of VAV Air-conditioning Systems," in Proceedings of the 31st Chinese Control Conference, Hefei, 2012, pp. 6938-6942.
S. Liu, T. Li, L. Xie, M. Fu, and J. Zhang, "Sampled-Data Based Average Consensus With Logarithmic Quantizer," in Proceedings of the 31st Chinese Control Conference, Hefei, 2012, pp. 6141-6146.
S. Liu, C. Chen, L. Xie, and Y.-H. Chang, "Formation Control of Multi-robot Systems," in Proceedings of the 11th International Conference on Control Automation Robotics & Vision, Singapore, 2010, pp. 1057-1062.
S. Liu, L. Xie, and H. Zhang, "Consensus Protocols for Multi-Agent Systems with Delays and Noises in Transmission Channels," in Proceedings of the49thIEEE Conference on Decision and Control, Atlanta, 2010, pp. 5857-5862.
S. Liu, L. Xie, and F. Lewis, "Synchronization of Multi-Agent Systems with Delayed Input Information from Neighbors," in Proceedings of the 49th IEEE Conference on Decision and Control, Atlanta, 2010, pp. 4529-4534.
S. Liuand L. Xie, "Consensus for Discrete Multi-agent Systems with Bounded Delays under Static and Randomly Switching Topologies,"in Proceedings ofthe 29thChinese Control Conference, Beijing, 2010, pp. 5809-5814.
S. Liu, L. Xie, and T. Li, "Distributed Consensus for Multi-agent Systems with Communication Delays and Limited Data Rate," in Proceedings ofthe 8thWorld Congress on Intelligent Control and Automation, Jinan, 2010, pp. 904-909.
H. Wang, H. Zhang, L. Xie, andS. Liu, "Discrete TimeH∞Preview Control," in Proceedings of the 7th Asian Control Conference, Hong Kong, 2009, pp. 57-62.
S. Liu, L. Xie, and H. Zhang, "Linear quadratic regulation for linear continuous-time systems with distributed input delay," in Proceedings of the 27th Chinese Control Conference, Kunming, 2008, pp. 195-199.
S. Liu, L. Xie, and H. Zhang, "Linear Quadratic Regulation for Discrete-time Systems with Multiple Delays in Single Input Channel," in Proceedings of the 17th IFAC World Congress, Seoul, Korea, 2008, pp. 13336-13341.
