Publications

Theses

  1. Fuzzy adaptive control of a two-wheeled inverted pendulum (Tianqi Xi, April 2018)
  2. Attitude and position control of flapping-wing micro aerial vehicles (Master Student: Ning Che, April 2018)
  3. Adaptive backstepping control of quadrotors with neural network (Master Student: Zhengqi Wang, April 2018)
  4. Attitude control for a quadrotor UAV using adaptive fuzzy backstepping (Master Student: Kaiyu Zhao, Oct 2017)
  5. Quadrotor altitude and attitude control using backstepping technique with neural network (Master Student: Xiao Cui, Jan 2017)
  6. Autonomous navigation using image processing (Master Student: Ajantharojan Sivanesu, Oct 2015)
  7. Balance control of a single robot leg (Master Student: Joshua Abela, May 2015)
  8. Robust H-infinity model reference tracking control of singular systems using T-S fuzzy model and LMI (Master Student: Shamendu Roy Rohit, May 2014)
  9. Mobile robot rank with GPU assistance (Master Student: Allen Chih Lun Pan, Oct 2013)
  10. RBF neural network based generalized predictive control for nonlinear stockastic systems (Master Student: Qi Xin, March 2013)
  11. Analysis and design of networked predictive control systems (Master Student: Osama Atya Albarnat, Sept 2011)
  12. Fuzzy logic control of a two degree of freedom parallel robot (Master Student: Angelo Liadis, September, 2010)
  13. Design,simulation and control of a 12 DOF biped robot (Master Student: Andrew Cudowski, May, 2010)
  14. Design and control of a 10 DOF biped robot (Master Student: Weigang Gu, April, 2009)
  15. Design, analysis and passive balance control of a 7-DOF biped robot (Master Student: Wenguang Li, August, 2007)
  16. Design and control of a 6 DOF biped robot (Master Student:Fuhai Gu, August, 2006)
  17. Adaptive control of a parallel robot via backstepping technique (Master Student: Li Wang, August, 2006)
  18. Nonlinear controller design for a Buck converter (Master Student: Yonggang Yin, August, 2006)
  19. Study of several problems in nonlinear control by backstepping (Master Student: Zongtao Lu, August, 2005)
  20. Robust and adaptive control via backstepping technique (Master Student: Antoine Ibrahim, August, 2005)

Selected Journal Articles

  1. Shengtao Li, Xiaomei Liu, Xiaoping Liu (2017). The coordinated immersion and variance control of power systems with excitation and steam-valve, Journal of Dynamical System, Measurement and Control
  2. Yang Liu, Xiaoping Liu, and Yuanwei Jing (2017). Adaptive backstepping H∞ tracking control with prescribed performance for internet congestion, ISA Transactions
  3. Zhao Zhang, Zhiliang Wang, Xuebo Chen, Xiaoping Liu (2017). Improved results on BIBO stability and stabilization of networked control systems with short time-varying delays, Journal of the Franklin Institute
  4. Bing Chen, Huaguang Zhang, Xiaoping Liu, and Chong Lin (2017). Neural observer and adaptive neural control design for a class of nonlinear systems, IEEE Transactions on Neural Networks and Learning Systems.
  5. Bing Chen, Huaguang Zhang, Xiaoping Liu, and Chong Lin (2017). Observer and adaptive fuzzy control design for nonlinear strict-feedback systems with unknown virtual control coefficients, IEEE Transactions on Fuzzy Set Systems.
  6. Ziye Zhang, Xiaoping Liu, Chong Lin, Bing Chen, Haixia Wang (2017). Finite-time stabilizability and instabilizability for complex-valued memristive neural networks with time delays, IEEE Transactions on Systems, Man and Cybernetics: Systems, Accepted
  7. Ziye Zhang, Xiaoping Liu, Runan Guo, Chong Lin (2017) Finite-time stability for delayed complex-valued BAM neural networks, Neural Processing Letters
  8. Ziye Zhang, Xiaoping Liu, Chong Lin, Shaowei Zhou (2017). Exponential stability analysis for delayed complex-valued memristor-based recurrent neural networks, Neural Computing and Applications
  9. Fang Wang, Bing Chen, Xiaoping Liu, and Chong Lin (2017). Finite-time adaptive fuzzy tracking control design for nonlinear systems, IEEE Transactions on Fuzzy Systems, accepted.
  10. Yinyan Zhang, Shuai Li, and Xiaoping Liu (2017). Adaptive near-optimal control of uncertain systems with application to underactuated surface vessels, IEEE Transactions on Control Systems Technology,
  11. ZhiguoYan, Weihai Zhang Ju H. Park, Xiaoping Liu (2017) Quantitative exponential stability and stabilization of discrete-time markov jump systems with multiplicative noises, IET Control Theory & Applications,  11(16), 2886-2892, Nov.
  12. Xiaohua Li and Xiaoping Liu (2017). Backstepping-based decentralized adaptive neural H_inf control for a class of large-scale nonlinear systems with expanding construction, Nonlinear Dynamics, 90(2), 1373-1392, Oct.
  13. Yonghui Yang, Wangbao Xu, Genxi Rong, Xiaoping Liu, and Xuebo Chen (2017). A self-organizing approach based on task-points for forming complex swarm-robot transport formations, Int. J. of Robotics and Automations, 32(5), 482-491, Oct.
  14. Zheng Wang, Xiaoping Liu, Kefu Liu, Shuai Li, and Huanqing Wang (2017). Backstepping-based Lyapunov function construction using approximate dynamic programming and sum of square techniques, IEEE Trans. Cybernetics, 47(10), 3393-3403, Oct.
  15. Runan Guo, Ziye Zhang, Xiaoping Liu, Chong Lin (2017). Existence, uniqueness, and exponential stability analysis for complex-valued memristor-based BAM neural networks with time delays, Applied Mathematics and Computation, 311, 110-117, Oct.
  16. Maoxiang Chu, Jie Zhao, Xiaoping Liu, Rongfen Gong (2017). Multi-class classification for steel surface defects based on machine learning with quantile hyper-spheres, Chemometrics and Intelligent Laboratory, 168, 15-27, Sept.
  17. Ziye Zhang, Xiaoping Liu, Jian Chen, Runan Guo, Shaowei Zhou (2017) Further stability analysis for delayed complex-valued recurrent neural networks, Neurocomputing, 251, 81-89, Aug.
  18. Xiaoping Liu, Chuang Gao, Ming Chen, Huanqing wang (2017). Adaptive fuzzy funnel control for a class of strict feedback nonlinear systems, Neurocomputing, 241(7), 71-80, June.
  19. Chuang Gao, Yufu Jia , Xiaoping Liu, Ming Chen (2017). Modeling and prescribed H∞ robust tracking control for strict feedback nonlinear systems, Nonlinear Analysis: Modelling and Control, 22(3), 317-333, March.
  20. Xiaohua Li, Xiaoping Liu, Bo Xu, Yang Liu, (2017). Adaptive neural network decentralized stabilization for nonlinear large scale interconnected systems with expanding construction, Journal of the Franklin Institute, 354(1), 233-256, Jan.
  21. Wangbao Xu, Genxi Rong, Xiaoping Liu, Tianyun Huang, and Xuebo Chen (2016). A method based on bottleneck-linear assignment for forming complex transport formations, International Journal of Advanced Robotic Systems, 13(1), the 6th paper, 1-10.
  22. Xiaoping Liu and Yufu Jia (2016). Linear quadratic regulator for impulse uncontrollable singular systems, Journal of Electrical & Electronic Systems, 5(4),1-5, DOI: 10.4172/2332-0796.1000207, Dec.
  23. Rongfen Gong, Chengdong Wu, Maoxiang Chu, Xiaoping Liu (2016). The strip Steel surface defect recognition based on multiple support vector hyper-sphere with feature and sample weights, Steel Research International, 87(12), 1678-1685, Dec.
  24. Min Wang, Cong Wang, Peng Shi, and Xiaoping Liu (2016). Dynamic learning from neural control for strict-feedback systems with guaranteed predefined performance, IEEE Trans. Neural Networks and Learning Systems, 27(12), 2564-2576, Dec.
  25. Wangbao Xu, Xiaoping Liu, Xuebo Chen, and Jie Zhao (2016). Improved artificial moment for decentralized local path planning of multi-robots, IEEE Trans. Control Systems Technology, 23(6), 2383-2390, Nov.
  26. Huanqing Wang, Xiaoping Liu, Kefu Liu (2016). Adaptive fuzzy tracking control for a class of pure-feedback stochastic nonlinear systems with non-lower triangular structure, Fuzzy Sets and Systems, 302(11), 101-120, Nov.
  27. Zhu Wang, Qibin Jin, Xiaoping Liu (2016) Iteratively reweighted correlation analysis method for robust parameter identification of multiple-input multiple-output discrete-time systems, IET Signal Processing, 10(5), 549-556, Jul.
  28. Huanqing Wang, Hongyan Liu, Xiaoping Liu, Liang Liu, Shuai Li (2016) Direct adaptive neural control of nonlinear strict-feedback systems with unmodeled dynamics using small-gain approach, International Journal of Adaptive Control and Signal Processing, 30(6), 906-927, Jun.
  29. Huanqing Wang, Xiaoping Liu, Peter Xiaoping Liu, Shuai Li (2016). Robust adaptive fuzzy fault-tolerant control for a class of non-lower-triangular nonlinear systems with actuator failures, Information Sciences, 336(1) 60-74, April.
  30. Huanqing Wang, Xiaoping Liu, Kefu Liu (2016). Robust adaptive neural tracking control for a class of stochastic nonlinear interconnection systems, IEEE Trans. Neural Networks and Learning Systems, 27(3), 510-523, Mar.
  31. Zhu Wang, Qibing Jin, Xiaoping Liu (2016). Recursive least squares identification of hybrid Box-Jenkins model structure in open-loop & closed-loop, Journal of the Franklin Institute, 353(2), 265-278, Jan.
  32. Bing Chen, Chong Lin, Xiaoping Liu, and Kefu Liu (2016). Observer-based adaptive fuzzy control for a class of nonlinear delayed systems, IEEE Trans. Systems, Man, and Cybernetics: Systems, 46(1), 27-36, Jan.
  33. Xiaohua Li, Xiaoping Liu, Yang Liu, and Jiawang Gao (2015). Organically structured control of large-scale systems with expanding construction based on state observation, Abstract and Applied Analysis, 2015(2015) Article ID 807202, 1-27.
  34. Xiaohua Li, Yang Liu, and Xiaoping Liu (2015). Decentralized finite-time connective control for a class of large-scale systems with different structural forms, Mathematical Problems in Engineering, 2015 (2015), Article ID 132517, 1-10.
  35. Bing Chen, Chong Lin, Xiaoping Liu and Kefu Liu (2015). Adaptive fuzzy tracking control for a class of MIMO nonlinear systems in non-strict-feedback form, IEEE Trans. Cybernetics, 25(12), 2774-2755, Dec.
  36. Qibing Jin, Zhu Wang and Xiaoping Liu (2015). Auxiliary model-based interval-varying multi-innovation least squares identification for multivariable OE-like systems with scarce measurements, Journal of Process Control, 35 (7) 154-168, Nov.
  37. Huanqing Wang, Kefu Liu, Xiaoping Liu, Bing Chen and Chong Lin (2015). Neural-based adaptive output-feedback control for a class of nonstrict-feedback stochastic nonlinear systems, IEEE Trans. Cybernetics, 45(9), 1977-1987, Sept.
  38. Huanqing Wang, Xiaoping Liu, Kefu Liu, Hamid Reza Karimi (2015). Approximation-based adaptive fuzzy tracking control for a class of non-strict-feedback stochastic nonlinear time-delay systems, IEEE Trans. Fuzzy Systems, 23(5), 1746-1760, Oct.
  39. Coppola, G., Liu, K., Liu, X., Zhang, D. (2015). Experimental study on the control of a novel vibration isolator via adaptive backstepping, Journal of Vibration and Control, 21(7), 1321-1339, May.
  40. Ming Chen,  Xiaoping Liu, and Huanqing Wang (2015). Adaptive robust fault-tolerant control for nonlinear systems with predescribed performance, Nonlinear Dynamics, 81(4), 1727-1739, May.
  41. Huanqing Wang, Xiaoping Liu, Kefu Liu (2015). Adaptive neural data-based compensation control of nonlinear systems with dynamic uncertainties and input saturation, IET Control Theory & Applications, 9(7), 1058-1065, April.
  42. Huanqing Wang, Xuebo Yang, Zhandong Yu, Kefu Liu and Xiaoping Liu (2014). Fuzzy-approximation-based decentralized adaptive control for pure-feedback large-scale nonlinear systems with time-delay, Neural Computing and Applications, 26(1) 151-160, January.
  43. Ming Wang, Chong Wang, and Xiaoping Liu (2014). Dynamic learning from adaptive neural control with predefined performance for a class of nonlinear systems. Information Sciences, 279(2014), 874-888.
  44. Wangbao Xu, Xuebo Chen, Jie Zhao, and Xiaoping Liu (2014). Function-segment artificial moment method for sensor-based path planning of single robot in complex environments, Information Sciences, 280(1), 64-81.
  45. Bing Chen, Xiaoping Liu, Kefu Liu, and Chong Lin (2014). Fuzzy approximation-based adaptive control of nonlinear delayed systems with unknown dead zone, IEEE Trans. Fuzzy Systems, 22(2), 237-248.
  46. Bing Chen, Kefu Liu, Xiaoping Liu, Peng Shi, Chong Lin, and Huaguang Zhang (2014). Approximation-based adaptive neural control design for a class of nonlinear systems, IEEE Trans. Cybernetics, 44(5), 610-619.
  47. Huangqing Wang, Xiaoping Liu, Kefu Liu, Bing Chen, and Chong Lin (2014). Adaptive neural control for a general class of pure-feedback stochastic nonlinear systems, Journal of Neurocomputing, 135(5), 348-356.
  48. Huangqing Wang, Bing Chen, Xiaoping Liu, Kefu Liu, and Chong Lin (2014). Adaptive neural tracking control for stochastic nonlinear strict-feedback systems with unknown input saturation. Information Sciences, 269(5), 300-315.
  49. Huangqing Wang, Xiaoping Liu, Bing Chen, and Zhou Qi (2014). Adaptive fuzzy decentralized control for a class of pure-feedback large-scale nonlinear systems, Nonlinear Dynamics, 75(3), 449-460.
  50. Huangqing Wang, Bing Chen, Kefu Liu, Xiaoping Liu, and Chong Lin (2014). Adaptive neural tracking control for a class of non-strict feedback stochastic nonlinear systems with unknown backlash-like-hysteresis, IEEE Trans. Neural Networks and Learning Systems, 25(5), 947-958.
  51. Huangqing Wang, Xiaoping Liu, Zhou Qi, Hamid Reza Karimi (2014).  Direct adaptive tracking control for a class of pure-feedback stochastic nonlinear systems based on fuzzy-approximation, Abstract and Applied Analysis, 2014(462468), 1-10.
  52. Yinhe Wang, Liang Luo, Yongqing Fan, Yun Zhang, Xiaoping Liu, and Siying Zhang (2014). Adaptive control design for a class of nonlinear systems based on fuzzy logic systems with scalars and saturators, Int. Journal of Systems Science, 45(3), 202-214.
  53. Huangqing Wang, Bing Chen, Xiaoping Liu, Kefu Liu, and Chong Lin (2013). Robust adaptive fuzzy tracking control for pure-feedback stochastic nonlinear systems with input constraints, IEEE Trans. Cybernetics, 43(6), 2093-2104.
  54. Bing Chen, Xiaoping Liu, Kefu Liu, Chong Lin (2013). Adaptive control for nonlinear MIMO time-delay systems based on fuzzy approximation. Information Sciences, 222, 576–592.
  55. Bing Chen, Xiaoping Liu, Kefu Liu, Chong Lin (2013). Adaptive fuzzy tracking control of nonlinear MIMO systems with time-varying delays, Fuzzy Sets and Systems, 217(4), 1–21.
  56. Shengtao Li, Xiaomei Liu, Xiujuan Dong, Yuanwei Jing, and Xiaoping Liu (2013). A novel controller for a class of nonlinear systems via immersion and invariance, Int. J. of Innovative Computing, Information and Control, 9(8), 3463-3470.
  57. Bing Chen, Xiaoping Liu, Shuzhi. Ge, and Chong Lin (2012). Adaptive fuzzy control of a class of nonlinear systems by fuzzy approximation approach, IEEE Trans. Fuzzy Systems, 20(6), 1012-1021.
  58. Min Wang, Xiaoping Liu, and Peng Shi (2011). Adaptive neural control of  pure-feedback nonlinear time-delay systems via dynamic surface technique, IEEE Trans. Systems, Man, and Cybernetics, Part B, 41(6), 1681-1692.
  59. Bing Chen, Xiaoping Liu, Kefu Liu, and Chong Lin (2010). Fuzzy-approximation-based adaptive control of strict-feedback nonlinear systems with time delays, IEEE Trans. Fuzzy Systems, 18(5), 883-892.
  60. Bing Chen, Xiaoping Liu, Kefu Liu, Peng Shi (2010). Direct adaptive fuzzy control for nonlinear systems with time-varying delays, Information Sciences, 180(5), pp.776-792.
  61. Li Wang, Xiaoping Liu, and Kefu Liu (2009). Adaptive tracking control of parallel robots: backstepping and PD schemes, Int. Journal of Control Theory and Applications, 2(1), pp.39-59.
  62. Bing Chen, Xiaoping Liu, Kefu Liu, Chong Lin (2009). Novel adaptive neural control design for nonlinear MIMO time delay systems, Automatica, 45(6), pp.1554-1560.
  63. Xiaoheng Chang, Guanghong Yang, and Xiaoping Liu (2009), H-infinity fuzzy static output feedback control of T-S fuzzy systems based on fuzzy Lyapunov approach, Asian Journal of Control, 11(1), pp.89-93.
  64. Bing Chen, Xiaoping Liu, Kefu Liu, Chong Lin (2009). Direct adaptive fuzzy output tracking control of nonlinear strict-feedback systems”, Automatica, 45(6), pp. 1530-1535.
  65. Bing Chen, Xiaoping Liu (2009). Comment on adaptive fuzzy H_infinity stabilization for strict-feedback canonical nonlinear systems via backstepping and small-gain approach, IEEE Trans. Fuzzy Systems, 13 (3), pp.732–733.
  66. Ge Guo and Xiaoping Liu (2009). Observability and controllability of systems with limited data rate, Int. Journal of Systems Science, 40(4), pp.1464-5319.
  67. Li Wang, Zongtao Lu, Xiaoping Liu, Kefu Liu and Dan Zhang (2009). Adaptive control of a parallel robot via backstepping technique, International Journal of Systems, Control and Communications, 1(3), pp.312-324.
  68. Yongqiang Ye, Abdelhamid Tayebi, Xiaoping Liu (2009). All-pass filtering in iterative learning control, Automatica, 45(1), pp.257-264.
  69. Bing Chen, Xiaoping Liu, Chong Lin and Kefu Liu. (2009). Robust H_infinity control of Takagi-Sugeno fuzzy systems with state and input time-delays. Fuzzy Sets and Systems, 160(4), pp.403-422.
  70. Min Wang, Bing Chen, Kefu Liu, Xiaoping Liu and Siying Zhang (2008). Adaptive fuzzy tracking control of nonlinear time-delay systems with unknown virtual control coefficients, Information Sciences, 178(22), pp.4326-4340.
  71. Bing Chen, Xiaoping Liu, Shaocheng Tong and Chong Lin (2008). Observer-based Stabilization of T-S fuzzy systems with input delay, IEEE Trans. Fuzzy Systems, 16 (3), pp.652–663.
  72. Xiaoping Liu (2008) A global canonical form for nonlinear singular control systems, Int. Journal of Systems, Control and Communications, 1(1), pp.82-97.
  73. Bing Chen, Chong Lin, Xiaoping Liu, and Shaocheng Tong (2008). Guaranteed cost control of T-S fuzzy Systems with input delay, Int. Journal of Robust and Nonlinear Control, 18(12), pp.1230-1256.
  74. Min Wang, Bing Chen, Xiaoping Liu and Peng Shi (2008). Adaptive fuzzy tracking control for a class of perturbed strict-feedback nonlinear time-delay systems, Fuzzy Sets and Systems, 159(8), 949-967.
  75. Bing Chen, Xiaoping Liu, and Shaocheng Tong (2008). Robust fuzzy control of nonlinear systems with input delay. Chaos, Solitons & Fractals, 37 (3), pp.894–901.
  76. Bing Chen, Xiaoping Liu, and Shaocheng Tong (2007). Guaranteed cost control of time-delay chaotic systems via memoryless state feedback. Chaos, Solitons & Fractals, 34(5), pp.1683-1688.
  77. Bing Chen, Xiaoping Liu, Shaocheng Tong, and Chong Lin (2007). Guaranteed cost control of T-S fuzzy systems with state and input delays. Fuzzy Sets and Systems, 158(20), 2251-2267.
  78. Bing Chen, Xiaoping Liu, and Shaocheng Tong (2007). New delay-dependent stabilization conditions of T-S fuzzy systems with constant delay. Fuzzy Sets and Systems, 158(20), 2209-2224.
  79. Bing Chen, Xiaoping Liu, and Shaocheng Tong (2007). Adaptive fuzzy approach to control unified chaotic systems, Chaos, Solitons & Fractals, 34(4), pp.1180-1187.
  80. Bing Chen, Shaocheng Tong, and Xiaoping Liu (2007). Fuzzy approximate disturbance decoupling of MIMO nonlinear systems by backstepping approach. Fuzzy Sets and Systems, 158(10), 1097-1125.
  81. Bing Chen, Xiaoping Liu, and Shaocheng Tong (2007). Adaptive fuzzy output tracking control of MIMO nonlinear uncertain systems, IEEE Trans. Fuzzy Systems, 15(2), 287-300.
  82. Xiaoheng Chang, Yuanwei Jing, Xiying Gao, Xiaoping Liu (2007). Stability analysis and fuzzy controller design for TS fuzzy control system. Journal of of System Simulation, 19(24), 5624-5627.
  83. Georgi M. Dimirovski, Yuanwei Jing, Wenlei Li, and Xiaoping Liu (2006). Adaptive back-stepping design of TCSC robust nonlinear control for power systems, Autosoft Intelligient Automation & Soft Computing, 12(1).
  84. Bing Chen, Xiaoping Liu, and Shaocheng Tong (2006). Delay-dependent stability analysis and control synthesis of fuzzy dynamic systems with time-delay, Fuzzy Sets and Systems, 157(16), 2224-2240.
  85. Bing Chen and Xiaoping Liu (2005). Fuzzy approximate disturbance decoupling of MIMO nonlinear systems by backstepping and application to chemical processes, IEEE Trans. Fuzzy Systems, 13(6), 832-847.
  86. Bing Chen and Xiaoping Liu (2005). Delay-dependent robust H-infinity control for T-S fuzzy systems with time delay, IEEE Trans. Fuzzy Systems, 13(4), 544-556.
  87. Bing Chen and Xiaoping Liu (2005), Fuzzy guaranteed cost control of nonlinear neutral delay systems with parameter uncertainty, Dynamics of Continuous, Discrete and Impulsive Systems Series B: Applications & Algorithms 12b (2005) 381-396.
  88. Bing Chen and Xiaoping Liu (2005). Fuzzy guaranteed cost control for nonlinear systems with time-varying delay, IEEE Trans. Fuzzy Systems, 13(2), 238-249.
  89. Xiaoping Liu, Daniel W.C. Ho, and Xiaohua Wang (2004). Input-output block decoupling of affine nonlinear singular systems, Dynamics of Continuous, Discrete and Impulsive Systems, Series A: Mathematical Analysis, 11(5-6), 771-786.
  90. Xiaoping Liu, Daniel W.C. Ho (2004). Stabilization of nonlinear differential- algebraic equation systems, Int. Journal of Control, 77(7), 671-684.
  91. Bing Chen and Xiaoping Liu (2004). Reliable control design of fuzzy dynamic systems with time-varying delay, Fuzzy Sets and Systems, 146(3), 349-374.
  92. Xiaoping Liu, A. Jutan, and S. Rohani (2004). Almost disturbance decoupling of MIMO nonlinear systems and application to chemical processes, Automatica, 40(5), 465-471.
  93. Xiaoping Liu, S. Rohani, and A. Jutan (2003). Tracking control of general nonlinear differential-algebraic equation systems, AIChE Journal, 49(7), 1743-1760.
  94. Guangwei Li, Chuanzhi Zang, and Xiaoping Liu (2003). Comment on “Robust stabilization of a class of time-delay nonlinear systems”. IEEE Trans. Auto. Control, 48(5), 908-908.
  95. Xiaoping Liu and Daniel W.C. Ho (2002). Disturbance decoupling of linear time-varying singular systems. IEEE Trans. Auto. Control, 47(2), 335-341.
  96. Xiaoping Liu and Gongsheng Huang (2001). Global decentralized robust stabilization for interconnected uncertain nonlinear systems with multiple inputs. Automatica, 37(9), 1435-1442.
  97. Xiaoping Liu, Xiaohua Wang, and Daniel W.C. Ho (2000). Input-output block decoupling of linear time-varying singular systems, IEEE Trans. Auto. Control, 45(2), 312-318.
  98. Xiaoping Liu, Guoxiang Gu, and Kemin Zhou (1999). Robust stabilization of MIMO nonlinear systems by backstepping. Automatica, 35(5), 987-992.
  99. Xiaoping Liu, Kemin Zhou, and Guoxiang Zhou (1999). Global stabilization of MIMO minimum-phase nonlinear systems without strict triangular conditions. Systems & Control Letters, 36(4), 359-362.
  100. Xiaoping Liu (1999). Input-output decoupling of linear time-varying singular systems. IEEE Trans. Auto. Control, 44(5), 1016-1021.
  101. Xiaoping Liu (1998). Local disturbance decoupling of nonlinear singular systems. Int. J. of Control, 70(7), 685-702.
  102. Xiaoping Liu (1998). Asymptotic output tracking of nonlinear differential- algebraic control systems. Automatica, 34(3), 393-397.
  103. Xiaoping Liu and S. Celikovsky (1997). Feedback control of affine nonlinear singular control systems. Int. J. of Control, 68(4), 753-774.
  104. Xiaoping Liu and V. Kucera (1997). Strong decoupling of descriptor systems via proportional state feedback. Kybernetika, 33(4), 371-386.
  105. Xiaoping Liu (1993). Optimal control problems for large-scale composite systems with similarity. Control–Theory and Advanced Technology, 9(2), 597-606.
  106. Xiaoping Liu and Siying Zhang (1992). Optimal incentive strategy for leader-follower games. IEEE Trans. Auto. Control, 37(12), 1957-1961.
  107. Xiaoping Liu (1992). Output regulation of strongly coupled symmetric composite systems. Automatica, 28(5), 1037-1041.
  108. Xiaoping Liu, Jingcai Wang, and Siying Zhang (1992). The canonical form of uncontrollable nonlinear control systems. Science in China, Series A, 35(7), 889-896.
  109. Xiaoping Liu and Siying Zhang (1992). Comments on stabilization of interconnected uncertain discrete systems via decentralized control. Information and Decision Tech., 18(3), 221-222.
  110. Xiaoxin Xie, Xiaoping Liu and Siying Zhang (1991). The Kalman decomposition of nonlinear control systems possessing symmetry, Advance in Modelling & Simulation, 27(4), 57-63.
  111. Xiaoping Liu and Siying Zhang (1991). Three-level Stackelberg strategies in linear-quadratic descriptor systems. Control and Cybernetics, 20(3), 73-83.
  112. Xiaoping Liu and Siying Zhang (1991). Three-level Stackelberg strategies in linear-quadratic singular systems. Informatica, 2(3), 414-433.
  113. Xiaoping Liu and Siying Zhang (1991). Stackelberg strategies for singular dynamic systems. Informatica, 2(2), 233-247.
  114. Xiaoping Liu and Siying Zhang (1989). Optimal control problem for linear time-varying descriptor systems. Int. J. of Control, 49(5), 1441-1452.
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