Dr Jun Liu
Lecturer

Address:
Dr Jun Liu
Department of Automatic Control and Systems Engineering
University of Sheffield
Mappin Street, Sheffield S1 3JD
United Kingdom
Tel: +44 (0)114 222 5632
Email: j.liu@sheffield.ac.uk
Room: C07b, Amy Johnson Building

Biopic

I received my B.Sc. degree from Shanghai Jiao-Tong University, Shanghai, China, in 2002, my M.Sc. degree in mathematics from Peking University, Beijing, China, in 2005, and my Ph.D. degree in applied mathematics from the University of Waterloo, Waterloo, Ontario, Canada, in 2010. I am currently a lecturer in the Department of Automatic Control and Systems Engineering (ACSE) at the University of Sheffield, Sheffield, UK. Prior to joining ACSE, I was a Postdoctoral Scholar in Computing and Mathematical Sciences at the California Institute of Technology, Pasadena, California, USA, from 2011 to 2012.

Research Interests

• Modelling, analysis, design and verification of nonlinear and hybrid control systems.
• Formal methods (formal verification and synthesis) for the analysis and design of control systems.
• Dynamics and control of networked systems.
• Stochastic stability and control.
• Stability and control of time-delay systems.
• Applications in cyber-physical systems, robotics, automation and autonomy, power and energy systems, and biological systems. 

PhD Projects 

I'm interested in supervising PhD projects broadly related to any of my research interests above. Please see PhD Research Projects here for a sample of currently available PhD projects. If you're interested in applying, please follow the instructions here to apply. There are a range of Scholarships and Studentships available for both UK and international student (see also here).

Teaching

I currently teach or coordinate the following modules:

• ACS 416: Nonlinear Systems.
• ACS 322/420: Individual/Advanced Project.
• ACS 6200: Control Systems Project and Dissertation.

In the past, I have taught courses on differential equations and nonlinear dynamics at the University of Waterloo and Caltech.

Selected Recent Journal Publications

• Synthesis of reactive switching protocols from temporal logic specifications. Jun Liu, Necmiye Ozay, Ufuk Topcu, and Richard M. Murray. IEEE Transactions on Automatic Control, 2013 (accepted). (doi) (pdf)
• On asymptotic convergence and boundedness of stochastic systems with time-delay. Jun Liu. Automatica, 48 (2012), 3166--3172. (doi)
• Class-KL estimates and input-to-state stability analysis of impulsive switched systems. Jun Liu, Xinzhi Liu, and Wei-Chau Xie. Systems & Control Letters, 61 (2012), 738--746. (doi)
• Global convergence of neural networks with mixed time-varying delays and discontinuous neuron activations. Jun Liu, Xinzhi Liu, and Wei-Chau Xie. Information Sciences, 183 (2012), 92--105. (doi)
• Stochastic consensus seeking with communication delays. Jun Liu, Xinzhi Liu, Wei-Chau Xie, and Hongtao Zhang. Automatica, 47 (2011), 2689--2696. (doi)
• Input-to-state stability of impulsive and switching hybrid systems with time-delay. Jun Liu, Xinzhi Liu, and Wei-Chau Xie. Automatica, 47 (2011), 899--908. (doi)

Selected Recent Conference Publications

• Reactive controllers for differentially flat systems with temporal logic constraints. Jun Liu, Ufuk Topcu, Necmiye Ozay, Richard M. Murray. 2012 IEEE Conference on Decision and Control (CDC). (pdf)
• Generalized solutions to hybrid systems with delays. Jun Liu and Andrew R. Teel. 2012 IEEE Conference on Decision and Control (CDC). (pdf)
• On synthesizing robust discrete controllers under modeling uncertainty. Ufuk Topcu, Necmiye Ozay, Jun Liu, and Richard M. Murray. 2012 International Conference on Hybrid Systems: Computation and Control (HSCC). (pdf)
• Decentralised minimal-time dynamic consensus. Ye Yuan, Jun Liu, Richard M. Murray, and Jorge Gonçalves. 2012 American Control Conference (ACC). (pdf)
• Switching protocol synthesis for temporal logic specifications. Jun Liu, Necmiye Ozay, Ufuk Topcu, and Richard M. Murray. 2012 American Control Conference (ACC). (pdf)

Honours and Awards

• Santander Research Mobility Award 2012
• NSERC Postdoctoral Fellowship 2010
• Chinese Government Award for Outstanding Students Abroad 2010
• Zhang Si-Ying Outstanding Youth Paper Award (CCDC) 2010
• NSERC Alexander Graham Bell Canada Graduate Scholarship 2009
• University of Waterloo President's Graduate Scholarship 2008–2010
• Ontario Graduate Scholarship 2008, 2009
• University of Waterloo Graduate Merit Scholarship 2006–2008