Prof. LIU, Lu

Professor

Office
YEUNG-Y6612
Phone
(+852) 3442-5426
Email
luliu45@cityu.edu.hk
Research Interests
  • Networked Systems and Control
  • Multi-Robot Systems and Control
  • Unmanned Systems
  • Nonlinear Control and Applications
  • Intelligent Control
  • Biomedical Devices
Education
  • Ph.D., The Chinese University of Hong Kong, 2008
  • M. Phil, The Chinese University of Hong Kong
  • B.S., Northwestern Polytechnical University
Professional Experience
  • Lecturer, The University of Nottingham, United Kingdom
  • Assistant Professor, The University of Tokyo, Japan
Honors and Awards
  • World's Top 2% of Most-Cited Scientists, Career and Every Single Year since 2020 (according to an index compiled by Stanford University)
  • Outstanding Teaching Performance Recognition, City University of Hong Kong, 2023
  • NSFC Excellent Young Scientists Fund (Hong Kong and Macao), 2022
  • Outstanding Research Award for Junior Faculty, City University of Hong Kong, 2020
  • Outstanding Research Award for Junior Faculty, City University of Hong Kong, 2020
  • Outstanding Teaching Award of the College of Engineering, City University of Hong Kong, 2020
  • Outstanding Supervisor Award, City University of Hong Kong, 2019
  • Outstanding Supervisor Award, City University of Hong Kong, 2018
  • Best Paper Award, the 13th World Congress on Intelligent Control and Automation, 2018
  • Zhang Si-Ying (CCDC) Outstanding Youth Paper Award, the 30th Chinese Control and Decision Conference, 2018
  • The President’s Award, City University of Hong Kong, 2018
  • Outstanding Reviewer, IEEE Transactions on Cybernetics, 2017
  • Shimemura Young Author Award, the 11th Asian Control Conference, 2017
  • Outstanding Supervisor Award, City University of Hong Kong, 2017
  • Best Paper Award (Guan Zhaozhi Award), Chinese Control Conference, 2008
  • Best Presentation Award, American Control Conference, 2007
Editorship

Journal Editorship

  • Associate Editor, IEEE Transactions on Fuzzy Systems
  • Associate Editor, IEEE Robotics and Automation Letters
  • Associate Editor, IEEE Transactions on Cybernetics
  • Associate Editor, Unmanned Systems
  • Associate Editor, Control Theory and Technology
  • Associate Editor, Transactions of the Institute of Measurement and Control
  • Guest Editor, a Special Issue of Unmanned Systems

Conference Organization

  • Invited Session Organizer and Chair, the 62nd IEEE Conference on Decision and Control (CDC), Singapore, Dec. 13-15, 2023
  • International Program Committee member (with the specific role to support young researchers), the 2023 International Federation of Automatic Control (IFAC) World Congress, Yokohama, Japan, July 9-14, 2023
  • Associate Editor, the Conference Editorial Board (CEB) of the IEEE Robotics and Automation Society for ICRA, London, UK, May 29-June 2, 2023
  • Women in Engineering (WIE) Chair, the 9th International Conference on Control, Automation and Robotics (ICCAR), Beijing, China, April 21-23, 2023
  • Associate Editor, the 17th International Conference on Control, Automation, Robotics and Vision (ICARCV), Singapore, Dec. 11-13, 2022
  • Associate Editor, the 10th IFAC Symposium on Robust Control Design (ROCOND), Kyoto, Japan, Aug. 30-Sept. 2, 2022
  • Regional Co-Chair, the 2022 International Conference on Control, Automation and Systems (ICCAS), Busan, Korea, Oct. 23-26, 2022
  • Associate Editor, the 10th IFAC Symposium on Robust Control Design (ROCOND), Kyoto, Japan, Aug. 30-Sept. 2, 2022
  • Invited Session Organizer, the 41st Chinese Control Conference, Hefei, China, July 25-27, 2022
  • General Chair, the 18th IEEE International Conference on Control and Automation (ICCA22), Naples, Italy, June 27-30, 2022
  • Associate Editor, the 2022 IEEE International Conference on Robotics and Automation (ICRA 2022), Philadelphia (PA), USA, May 23-27, 2022
  • Program Chair, the 11th International Conference on Intelligent Control and Information Processing (ICICIP 2021), Dali, China, Dec. 3-7, 2021
Publications
  1. Y. Hao and L. Liu*, “Event-Triggered Consensus of Uncertain Euler-Lagrange Multiagent Systems Over Jointly Connected Digraphs,” IEEE Transactions on Cybernetics, June 2023. DOI: 10.1109/TCYB.2023.3282703
  2. P. Wang, C. Song, and L. Liu*, “Coverage Control for Mobile Sensor Networks with Unknown Terrain Roughness and Nonuniform Time-Varying Delays,” SCIENCE CHINA Information Sciences, Apr. 2023.
  3. J. Zhang, L. Liu*, X. Wang, and H. Ji, “Distributed Optimal Coordination of Uncertain Nonlinear Multi-Agent Systems over Unbalanced Directed Networks via Output Feedback,” International Journal of Robust and Nonlinear Control, vol. 33, no. 16, pp. 10046-10063, Nov. 2023. DOI: 10.1002/rnc.6887
  4. P. Wang, C. Song, and L. Liu*, “Coverage Control for Mobile Sensor Networks with Double-Integrator Dynamics and Unknown Disturbances,” IEEE Transactions on Automatic Control, vol. 68, no. 10, pp. 6299-6306, Oct. 2023. DOI: 10.1109/TAC.2022.3232056
  5. B. Zheng, C. Song, and L. Liu*, “Cyclic-Pursuit-Based Circular Formation Control of Mobile Agents with Limited Communication Ranges and Communication Delays,” IEEE/CAA Journal of Automatica Sinica, vol. 10, no. 9, pp. 1860-1870, Sept. 2023.
  6. W. Chen, R. Zhao, L. Liu*, and G. Liu, “Consensus Control of Discrete-Time Multi-Agent Systems over Correlated Fading Channels: A Compressed Coding Scheme,” IEEE Transactions on Systems, Man, and Cybernetics: Systems, vol. 53, no. 9, pp. 5760-5771, accepted, Sept. 2023. DOI: 10.1109/TSMC.2023.3274294
  7. J. Zhang, L. Liu*, X. Wang, and H. Ji, “Fully Distributed Algorithm for Resource Allocation over Unbalanced Directed Networks without Global Lipschitz Condition,” IEEE Transactions on Automatic Control, vol. 68, no. 8, pp. 5119-5126, Aug. 2023. DOI: 10.1109/TAC.2022.3216972
  8. Y. Wu and L. Liu*, “Finite-Time Distributed Average Tracking for a Class of Nonlinear Multi-Agent Systems with External Disturbances,” IEEE Transactions on Systems, Man, and Cybernetics: Systems, vol. 53, no. 8, pp. 5106-5115, Aug. 2023. DOI: 10.1109/TSMC.2023.3261347
  9. Y. Hao, J. Zhang, and L. Liu*, “Fully Distributed Event-Triggered Cooperative Output Regulation of Multi-Agent Systems under Jointly Connected Digraphs,” IEEE Transactions on Automatic Control, vol. 68, no. 7, pp. 4241-4248, July 2023. DOI: 10.1109/TAC.2022.3200961
  10. X. Xu, L. Liu*, M. Krstic, and G. Feng, “Low-Gain Compensation for PDE-ODE Cascade Systems with Distributed Diffusion and Counter-Convection,” IEEE Transactions on Automatic Control, vol. 68, no. 4, pp. 2360-2367, Apr. 2023. DOI: 10.1109/TAC.2022.3170371
  11. X. Xu, L. Liu*, M. Krstic, and G. Feng, “Stabilization of Chains of Linear Parabolic PDE-ODE Cascades,” Automatica, vol. 148, 110763, Feb. 2023.
  12. M. Lu and L. Liu*, “Robust Synchronization Control of Switched Networked Euler-Lagrange Systems,” IEEE Transactions on Cybernetics, vol. 52, no. 7, pp. 6834-6842, July 2022.
  13. R. Yang, L. Liu*, and G. Feng, “An Overview of Recent Advances in Distributed Coordination of Multi-Agent Systems,” Unmanned Systems, vol. 20, no. 3, pp. 307-325, July 2022.
  14. R. Zhao, L. Liu*, and G. Feng, “Finite Frequency H-/H-infinite Memory Fault Detection Filtering Design for Uncertain Takagi-Sugeno Fuzzy Affine Systems,” IEEE Transactions on Fuzzy Systems, vol. 30, no. 7, pp. 2595-2609, July 2022.
  15. M. Guo, D. Xu, and L. Liu*, “Design of Cooperative Output Regulators for Heterogeneous Uncertain Nonlinear Multi-Agent Systems,” IEEE Transactions on Cybernetics, vol. 52, no. 6, pp. 5174-5183, June 2022.
  16. J. Zhang, L. Liu*, and H. Ji, “Optimal Output Consensus of Second-Order Uncertain Nonlinear Systems on Weight-Unbalanced Directed Networks,” International Journal of Robust and Nonlinear Control, vol. 32, no. 8, pp. 4878-4898, May 2022.
  17. X. Xu, L. Liu*, M. Krstic, and G. Feng, “Predictor Feedback and Integrator Backstepping of Linear Systems with Distributed Unbounded Delays,” International Journal of Robust and Nonlinear Control, vol. 32, no. 6, pp. 3281-3291, April 2022.
  18. X. Xu, L. Liu*, M. Krstic, and G. Feng, “Stability Analysis and Predictor Feedback Control for Systems with Unbounded Delays,” Automatica, vol. 135, 109958, Jan. 2022.
  19. L. Dou, X. Yu, L. Liu, X. Wang, and G. Feng, “Moving-Target Enclosing Control for Mobile Agents with Collision Avoidance,” IEEE Transactions on Control of Network Systems, vol. 8, no. 4, pp. 1669-1679, Dec. 2021.
  20. Y. Wu and L. Liu*, “Finite-Time Output Regulation for a Class of Nonlinear Multi-Agent Systems with Unity Relative Degree,” International Journal of Robust and Nonlinear Control, vol. 31, no. 8, pp. 6210-6232, Aug. 2021.
  21. M. Lu and L. Liu*, “Consensus of Heterogeneous Second-Order Nonlinear Uncertain Multi-Agent Systems Under Switching Networks,” IEEE Transactions on Automatic Control, vol. 66, no. 7, pp. 3331-3338, July 2021.
  22. Y. Qian, L. Liu*, and G. Feng, “Event-Triggered Robust Output Regulation of Uncertain Linear Systems with Unknown Exosystems,” IEEE Transactions on Systems, Man, and Cybernetics: Systems, vol. 51, no. 7, pp. 4139-4148, July 2021.
  23. R. Zhao, L. Liu*, and G. Feng, “H-/H-infinite Memory Fault Detection Filtering Design for Uncertain Systems with Finite Frequency Specifications,” International Journal of Robust and Nonlinear Control, vol. 31, no. 11, pp. 5381-5403, July 2021.
  24. Y. Qian, L. Liu*, and G. Feng, “Cooperative Output Regulation of Linear Multi-Agent Systems: An Event-Triggered Adaptive Distributed Observer Approach,” IEEE Transactions on Automatic Control, vol. 66, no. 2, pp. 833-840, Feb. 2021.
  25. J. Hu, H. Zhang, L. Liu, X. Zhu, C. Zhao, and Q. Pan, “Convergent Multi-Agent Formation Control with Collision Avoidance,” IEEE Transactions on Robotics, vol. 36, no. 6, pp. 1805-1818, Dec. 2020. DOI: 10.1109/TRO.2020.2998766
  26. L. Dou, C. Song, X. Wang, L. Liu*, and G. Feng, “Target Localization and Enclosing Control for Networked Mobile Agents with Bearing Measurements,” Automatica, vol. 118, August 2020. DOI: 10.1016/j.automatica.2020.109022.
  27. A. Wang, L. Liu*, J. Qiu, and G. Feng, “Event-Triggered Adaptive Fuzzy Output Feedback Control for Nonstrict-Feedback Nonlinear Systems with Asymmetric Output Constraint,” IEEE Transactions on Cybernetics. DOI: 10.1109//TCYB.2020.2974775
  28. A. Wang, L. Liu*, J. Qiu, and G. Feng, “Fuzzy Adaptive Finite-Time Fault-Tolerant Control for Strict-Feedback Nonlinear Systems,” IEEE Transactions on Fuzzy Systems. DOI: 10.1109/TFUZZ.2020.2965890
  29. X. Xu, L. Liu, and G. Feng, “Stability and Stabilization of Infinite Delay Systems: A Lyapunov Based Approach,” IEEE Transactions on Automatic Control, vol. 65, no. 11, pp. 4509-4524, Nov. 2020. DOI: 10.1109/TAC.2019.2958557.
  30. M. Lu and L. Liu*, “Quantized Output Regulation of Minimum-Phase Linear Uncertain Systems,” International Journal of Robust and Nonlinear Control, in press, Sept. 2020. DOI: 10.1002/RNC.5157
  31. Y. Qian, L. Liu*, and G. Feng, “Event-Triggered Robust Output Regulation of Uncertain Linear Systems with Unknown Exosystems,” IEEE Transactions on Systems, Man, and Cybernetics. DOI: 10.1109/TSMC.2019.2931752
  32. Y. Qian, L. Liu*, and G. Feng, “Distributed Dynamic Event-Triggered Control for Cooperative Output Regulation of Linear Multiagent Systems,” IEEE Transactions on Cybernetics, vol. 50, no. 7, pp.3023-3032, July 2020. DOI: 10.1109/TCYB.2019.2905931
  33. M. Lu and L. Liu*, “Robust Output Consensus of Networked Heterogeneous Nonlinear Systems by Distributed Output Regulation,” Automatica, accepted, Mar. 2018. DOI: 10.1109/TAC.2017.2771318
  34. Y. Qian, L. Liu*, and G. Feng, “Distributed Event-Triggered Adaptive Control for Consensus of Linear Multi-Agent Systems with External Disturbances,” IEEE Transactions on Cybernetics, vol. 50, no. 5, pp. 2197-2208, May 2020. DOI: 10.1109/TCYB.2018.2881484
  35. Y. Qian, L. Liu*, and G. Feng, “Cooperative Output Regulation of Linear Multi-Agent Systems: An Event-Triggered Adaptive Distributed Observer Approach,” IEEE Transactions on Automatic Control, DOI: 10.1109/TAC.2020.2985947
  36. M. Lu and L. Liu*, “Leader-Following Attitude Consensus of Multiple Rigid Spacecraft Systems under Switching Networks,” IEEE Transactions on Automatic Control, vol. 65, no. 2, pp. 839-845，Feb. 2020. DOI: 10.1109/TAC.2019.2920074
  37. X. Xu, L. Liu, and G. Feng, “Consensus of Linear Multi-Agent Systems with Distributed Infinite Transmission Delays: A Low Gain Approach,” IEEE Transactions on Automatic Control, vol. 65, no. 2, pp. 809-816，Feb. 2020. DOI: 10.1109/TAC.2019.2918119
  38. M. Lu and L. Liu*, “Leader-Following Consensus of Multiple Uncertain Euler-Lagrange Systems with Unknown Dynamic Leader,” IEEE Transactions on Automatic Control, vol. 64, no. 10, pp. 4167-4173, Oct. 2019. DOI: 10.1109/TAC.2019.2892384
  39. X. Xu, L. Liu, and G. Feng, “Semi-Global Stabilization of Linear Systems with Distributed Infinite Input Delays and Actuator Saturations,” Automatica, vol. 107, no. 6, pp. 398-405, Sept. 2019. DOI: 10.1016/j.automatica.2019.06.005
  40. A. Wang, L. Liu*, J. Qiu, and G. Feng, “Event-Triggered Robust Adaptive Fuzzy Control for a Class of Nonlinear Systems,” IEEE Transactions on Fuzzy Systems, vol. 27, no. 8, pp. 1648-1658, Aug. 2019. DOI: 10.1109/TFUZZ.2018.2886158
  41. M. Lu, L. Liu*, and G. Feng, “Adaptive Tracking Control of Uncertain Euler-Lagrange Systems Subject to External Disturbances,” Automatica, vol. 104, no. 6, pp. 207-219, June 2019. DOI: 10.1016/j.automatica.2019.02.048
  42. Y. Qian, L. Liu*, and G. Feng, “Output Consensus of Heterogeneous Linear Multi-Agent Systems with Adaptive Event-Triggered Control,” IEEE Transactions on Automatic Control, vol. 64, no. 6, pp. 2606-2613, June 2019. DOI: 10.1109/TAC.2018.2868997
  43. W. Hu, L. Liu*, and G. Feng, “Event-Triggered Cooperative Output Regulation of Linear Multi-Agent Systems under Jointly Connected Topologies,” IEEE Transactions on Automatic Control, vol. 64, no. 3, pp. 1317-1322, Mar. 2019. DOI: 10.1109/TAC.2018.2849587
  44. M. Meng, L. Liu*, and G. Feng, “Adaptive Output Regulation of Heterogeneous Multi-Agent Systems under Markovian Switching Topologies,” IEEE Transactions on Cybernetics, vol. 48, no. 10, pp. 2962-2971, Oct. 2018. DOI: 10.1109/TCYB.2017.2753382
  45. L. Dou, C. Song, X. Wang, L. Liu*, and G. Feng, “Coverage Control for Heterogeneous Mobile Sensor Networks Subject to Measurement Errors,” IEEE Transactions on Automatic Control, vol. 63, no. 10, pp. 3479-3486, Oct. 2018. DOI: 10.1109/TAC.2018.2799491
  46. M. Lu and L. Liu*, “Leader-following Consensus of Multiple Uncertain Euler-Lagrange Systems,” International Journal of Robust and Nonlinear Control, vol. 28, no. 14, pp. 4093-4104, Sep. 2018. DOI: 10.1002/rnc.4223
  47. X. Yu, L. Liu*, and G. Feng, “Distributed Circular Formation Control of Nonholonomic Vehicles without Direct Distance Measurements,” IEEE Transactions on Automatic Control, vol. 63, no. 8, pp. 2730-2737, Aug. 2018. DOI: 10.1109/TAC.2018.2790259
  48. M. Lu and L. Liu*, “Leader-Following Consensus of Multiple Uncertain Euler-Lagrange Systems Subject to Communication Delays and Switching Networks,” IEEE Transactions on Automatic Control, vol. 63, no. 8, pp. 2604-2611, Aug. 2018. DOI: 10.1109/TAC.2017.2771318
  49. M. Guo, D. Xu, and L. Liu*, “Adaptive Nonlinear Ship Tracking Control with Unknown Control Direction,” International Journal of Robust and Nonlinear Control, vol. 28, no. 3, pp. 2828-2840, Mar. 2018. DOI: 10.1002/rnc.4052
  50. W. Hu, L. Liu*, and G. Feng, “Cooperative Output Regulation of Linear Multi-Agent Systems by Intermittent Communication: A Unified Framework of Time- and Event-Triggering Strategies,” IEEE Transactions on Automatic Control, vol. 63, no. 2, pp. 548-555, Feb. 2018. DOI: 10.1109/TAC.2017.2727821
  51. X. Yu, X. Xu, L. Liu*, and G. Feng, “Circular Formation of Networked Dynamic Unicycles by a Distributed Dynamic Control Law,” Automatica, vol. 89, no. 1, pp. 1-7, Jan. 2018. DOI: 10.1016/j.automatica.2017.11.021
  52. M. Guo, D. Xu, and L. Liu*, “Nussbaum Function-Based Universal Cooperative Output Regulation Design for Uncertain Nonlinear Multi-Agent Systems,” International Journal of Robust and Nonlinear Control, vol. 28, no. 1, pp. 716-728, Jan. 2018. DOI: 10.1002/rnc.3897
  53. M. Guo and L. Liu*, “Output Regulation of Output Feedback Systems with Unknown Exosystem and Unknown High-Frequency Gain Sign,” Transactions of the Institute of Measurement and Control, vol. 40, no. 1, pp. 171-178, Jan. 2018. DOI: 10.1177/0142331216654535.
  54. M. Guo, D. Xu, and L. Liu*, “Adaptive Nonlinear Ship Tracking Control with Unknown Control Direction,” International Journal of Robust and Nonlinear Control, vol. 28, no. 3, pp 2828-2840, Mar. 2018. DOI: 10.1002/rnc.4052
  55. X. Xu, L. Liu, and G. Feng, “Consensus of Discrete-Time Linear Multi-Agent Systems with Communication, Input and Output Delays,” IEEE Transactions on Automatic Control, vol. 63, no. 2, pp. 492-497, Feb. 2018. DOI: 10.1109/TAC.2017.2720703
  56. W. Hu, L. Liu*, and G. Feng, “Cooperative Output Regulation of Linear Multi-Agent Systems by Intermittent Communication: A Unified Framework of Time- and Event-Triggering Strategies,” IEEE Transactions on Automatic Control, vol. 63, no. 2, pp. 548-555, Feb. 2018. DOI: 10.1109/TAC.2017.2727821
  57. X. Yu, X. Xu, L. Liu*, and G. Feng, “Circular Formation of Networked Dynamic Unicycles by a Distributed Dynamic Control Law,” Automatica, vol. 89, no. 1, pp. 1-7, Jan. 2018. DOI: 10.1016/j.automatica.2017.11.021
  58. M. Meng, L. Liu*, and G. Feng, “Output Consensus for Heterogeneous Multi-Agent Systems with Markovian Switching Network Topologies,” International Journal of Robust and Nonlinear Control, vol. 28, no. 1, pp 1049-1061, Jan. 2018. DOI: 10.1002/rnc.3918
  59. M. Guo, D. Xu, and L. Liu*, “Nussbaum Function-Based Universal Cooperative Output Regulation Design for Uncertain Nonlinear Multi-Agent Systems,” International Journal of Robust and Nonlinear Control, vol. 28, no. 1, pp 716-728, Jan. 2018. DOI: 10.1002/rnc.3897
  60. M. Lu and L. Liu*, “Cooperative Output Regulation of Linear Multi-Agent Systems by a Novel Distributed Dynamic Compensator,” IEEE Transactions on Automatic Control, vol. 62, no. 12, pp. 6481-6488, Dec. 2017. DOI: 10.1109/TAC.2017.2658026, 2017.
  61. Y. Li, L. Liu*, and G. Feng, “Finite−Time Stabilization of a Class of T−S Fuzzy Systems,” IEEE Transactions on Fuzzy Systems, vol. 25, no. 6, pp. 1824-1829, Dec. 2017. DOI: 10.1109/TFUZZ.2016.2612301.
  62. M. Guo, D. Xu, and L. Liu*, “A Result on Output Regulation of Lower Triangular Systems with Unknown High-Frequency Gain Sign,” International Journal of Robust and Nonlinear Control, vol. 27, no. 18, pp. 4903-4918, Dec. 2017. DOI: 10.1002/rnc.3835.
  63. X. Yu and L. Liu*, “Target Enclosing and Trajectory Tracking for a Mobile Robot Subject to a Class of Input Disturbances,” IEEE Control Systems Letters, vol. 1, no. 2, pp. 218-225, Oct. 2017. DOI: 10.1109/LCSYS.2017.2712663
  64. Y. Li, L. Liu, and G. Feng, “Adaptive Finite-Time Controller Design for T-S Fuzzy Systems,” IEEE Transactions on Cybernetics, vol. 47, no. 9, pp. 2425-2436, Sep. 2017. DOI: 10.1109/TCYB.2017.2671902
  65. X. Xu, L. Liu, and G. Feng, “Consensus of Heterogeneous Linear Multi-Agent Systems with Communication Time-Delays,” IEEE Transactions on Cybernetics, vol. 47, no. 8, pp. 1820-1829, Aug. 2017. DOI: 10.1109/TCYB.2017.2702635
  66. M. Meng, L. Liu, and G. Feng, “Stability and l_1 Gain Analysis of Boolean Networks with Markovian Jump Parameters,” IEEE Transactions on Automatic Control, vol. 62, no. 8, pp. 4222-4228, Aug. 2017. DOI:10.1109/TAC.2017.2679903.
  67. W. Hu, L. Liu*, and G. Feng, “Output Consensus of Heterogeneous Linear Multi-Agent Systems by Distributed Event-Triggered/Self-Triggered Strategy,” IEEE Transactions on Cybernetics, vol. 47, no. 8, pp. 1914-1924, Aug. 2017. DOI: 10.1109/TCYB.2016.2602327.
  68. L. Dou, C. Song, X. Wang, L. Liu*, and G. Feng, “Nonuniform Coverage Control for Heterogeneous Mobile Sensor Networks on the Line,” Automatica, vol. 81, no. 7, pp. 464-470, July 2017. DOI: 10.1016/j.automatica.2017.04.029
  69. X. Yu and L. Liu*, “Cooperative Control for Moving-Target Circular Formation of Nonholonomic Vehicles,” IEEE Transactions on Automatic Control, vol. 62, no. 7, pp. 3448-3454, July 2017. DOI: 10.1109/TAC.2016.2614348.
  70. X. Yu and L. Liu*, “Leader-Follower Formation of Vehicles with Velocity Constraints and Local Coordinate Frames,” SCIENCE CHINA Information Sciences, vol. 60, no. 7, pp. 070206:1–070206:15, July 2017. DOI: 10.1007/s11432-016-9094-1
  71. M. Lu and L. Liu*, (Front Cover) “Consensus of Linear Multi-Agent Systems Subject to Communication Delays and Switching Networks,” International Journal of Robust and Nonlinear Control, vol. 27, no. 9, pp. 1379-1396, June 2017. DOI: 10.1002/rnc.3750
  72. M. Guo, D. Xu, and L. Liu*, “Cooperative Output Regulation of Heterogeneous Nonlinear Multi-Agent Systems with Unknown Control Directions,” IEEE Transactions on Automatic Control, vol. 62, no. 6, pp. 3039-3045, June 2017. DOI: 10.1109/TAC.2016.2609281.
  73. M. Guo, L. Liu*, and G. Feng, “Global Disturbance Rejection for Nonlinear Lower Triangular Systems with iISS Inverse Dynamics and Uncertain Exosystem,” International Journal of Robust and Nonlinear Control, vol. 27, pp. 1757-1772, June 2017. DOI: 10.1002/rnc.3634.
  74. Y. Li, L. Liu*, and G. Feng, “Finite−Time Stabilization of a Class of T−S Fuzzy Systems,” IEEE Transactions on Fuzzy Systems, vol. 25, no. 6, pp. 1824-1829, Dec. 2017. DOI: 10.1109/TFUZZ.2016.2612301.
  75. M. Lu and L. Liu*, “Distributed Feedforward Approach to Cooperative Output Regulation Subject to Communication Delays and Switching Networks,” IEEE Transactions on Automatic Control, vol. 62, no. 4, pp.1999-2005, April 2017.
  76. M. Guo, L. Liu*, and G. Feng, “Global Disturbance Rejection for Nonlinear Lower Triangular Systems with iISS Inverse Dynamics and Uncertain Exosystem”, International Journal of Robust and Nonlinear Control, accepted, 2015. DOI: 10.1002/rnc.3634.
  77. W. Hu, L. Liu*, and G. Feng, “Output Consensus of Heterogeneous Linear Multi-Agent Systems by Distributed Event-Triggered/Self-Triggered Strategy,” IEEE Transactions on Cybernetics, DOI: 10.1109/TCYB.2016.2602327
  78. M. Guo and L. Liu*, “Output Regulation of Output Feedback Systems with Unknown Exosystem and Unknown High-Frequency Gain Sign,” Transactions of the Institute of Measurement and Control, DOI: 10.1177/0142331216654535, 2016.
  79. W. Hu and L. Liu*, “Cooperative Output Regulation of Heterogeneous Linear Multi-Agent Systems by Event-Triggered Control,” IEEE Transactions on Cybernetics, vol. 47, no. 1, pp. 105-116, Jan. 2017. DOI: 10.1109/TCYB.2015.2508561
  80. X. Yu and L. Liu*, “Distributed Formation Control of Nonholonomic Vehicles Subject to Velocity Constraints,” IEEE Transactions on Industrial Electronics, vol. 63, no. 2, pp. 1289-1298, Feb. 2016. DOI: 10.1109/TIE.2015.2504042
  81. C. Song, L. Liu, G. Feng, and S. Xu, “Coverage Control for Heterogeneous Mobile Sensor Networks on a Circle,” Automatica, vol. 63, no. 1, pp. 349-358, Jan. 2016. DOI: 10.1016/j.automatica.2015.10.044.
  82. W. Hu, L. Liu*, and G. Feng, “Consensus of Linear Multi-Agent Systems by Distributed Event-Triggered Strategy,” IEEE Transactions on Cybernetics, vol. 46, no. 1, pp. 148-157, Jan. 2016. DOI: 10.1109/TCYB.2015.2398892.
  83. Y. Fan, L. Liu, G. Feng and Y. Wang, “Self-Triggered Consensus for Multi-Agent Systems with Zeno-Free Triggers,” IEEE Transactions on Automatic Control, vol. 60, no. 10, pp. 2779-2784, Oct. 2015.
  84. L. Liu*, “Adaptive Cooperative Output Regulation for a Class of Nonlinear Multi-Agent Systems,” IEEE Transactions on Automatic Control, vol. 60, no. 6, pp. 1677-1682, June 2015. DOI: 10.1109/TAC.2014.2360023.
  85. X. Zhang, L. Liu, and G. Feng, “Leader-Follower Consensus of Time-Varying Nonlinear Multi-Agent Systems,” Automatica, vol.52, no.2, pp. 8-14, Feb. 2015.
  86. M. Guo and L. Liu* (Invited), “Adaptive Output Regulation Problem for a Class of Nonlinear Systems,” Control Theory and Technology (in Chinese), vol.31, no.7, pp. 987-992, July 2014.
  87. C. Song, L. Liu, G. Feng and S. Xu, “Optimal Control for Multi-Agent Persistent Monitoring,” Automatica, vol.50, no.6, pp.1663-1668, June 2014.
  88. C. Song, L. Liu, G. Feng, Y. Wang, and Q. Gao, “Persistent Awareness Coverage Control for Mobile Sensor Networks,” Automatica, vol. 49, no. 6, pp. 1867-1873, June 2013.
  89. Y. Fan, L. Liu, G. Feng, C. Song, and Y. Wang, “Virtual Neighbor Based Connectivity Preserving of Multi-Agent Systems with Bounded Control Inputs in the Presence of Unreliable Communication Links,” Automatica, vol. 49, no. 5, pp. 1261-1267, May 2013.
  90. L. Liu*, “Robust Cooperative Output Regulation Problem for Nonlinear Multi-Agent Systems,” IET Control Theory & Applications, vol. 6, no. 13, pp. 2142-2148, Sept. 2012.
  91. L. Liu, Z. Chen and J. Huang, “Global Disturbance Rejection of Lower Triangular Systems with Unknown Exosystem,” IEEE Transactions on Automatic Control, vol. 56, no. 7, pp. 1690-1695, July 2011.
  92. L. Liu, Z. Chen and J. Huang, “Parameter Convergence and Minimal Internal Model with an Adaptive Output Regulation Problem,” Automatica, vol. 45, no. 5, pp. 1306-1311, May 2009.
  93. L. Liu, F. Lewis and J. Huang, “Global Robust Tracking of a Class of Nonlinear Systems and Its Application,” IEEE Transactions on Circuits and Systems-I, vol. 55, no. 9, pp. 2743-2752, Oct. 2008.
  94. L. Liu and J. Huang, “Global Robust Output Regulation of Lower Triangular Systems with Unknown Control Direction,” Automatica, vol. 44, no. 5, pp. 1278-1284, May 2008.
  95. L. Liu and J. Huang, “Global Robust Stabilization of Cascade-Connected Systems with Dynamic Uncertainties without Knowing the Control Direction,” IEEE Transactions on Automatic Control, vol. 51, no. 10, pp. 625-631, Oct. 2006.
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