Publications

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2021

Farsi, M., and J. Liu, "A Structured Online Learning Approach to Nonlinear Tracking with Unknown Dynamics", American Control Conference (ACC), 2021.
Liu, J., "Closing the Gap Between Discrete Abstractions and Continuous Control: Completeness via Robustness and Controllability", International Conference on Formal Modeling and Analysis of Timed Systems (FORMATS), 2021.
Meng, Y., Y. Li, and J. Liu, "Control of Nonlinear Systems with Reach-Avoid-Stay Specifications: A Lyapunov-Barrier Approach with an Application to the Moore-Greizer Model", American Control Conference (ACC), 2021.
Li, Y., Z. Sun, and J. Liu, "ROCS 2.0: An Integrated Temporal Logic Control Synthesis Tool for Nonlinear Dynamical Systems", IFAC Conference on Analysis and Design of Hybrid Systems (ADHS), 2021.
Prabhakar, P., and J. Liu, "Simulation Relations for Abstraction-based Robust Control of Hybrid Dynamical Systems", IFAC Conference on Analysis and Design of Hybrid Systems (ADHS), 2021.
Liu, K-Z., X-F. Wang, A. R. Teel, X-M. Sun, and J. Liu, "A Matrosov Theorem for Hybrid Systems With Memory", IEEE Transactions on Automatic Control, vol. 66, 2021.
Zhang, M., X. Liu, and J. Liu, "Convergence Analysis of a Continuous-Time Distributed Gradient Descent Algorithm", IEEE Control Systems Letters, vol. 5, 2021.
Liu, J., "Converse Barrier Functions via Lyapunov Functions", IEEE Transactions on Automatic Control, 2021.
Zhang, H., and J. Liu, "Event-Triggered Fuzzy Flight Control of a Two-Degree-of-Freedom Helicopter System", IEEE Transactions on Fuzzy Systems , vol. 29, 2021.
Liu, J., "On the convergence of reinforcement learning with Monte Carlo Exploring Starts", Automatica, vol. 129, 2021.
Li, Y., and J. Liu, "Robustly complete synthesis of memoryless controllers for nonlinear systems with reach-and-stay specifications", IEEE Transactions on Automatic Control, vol. 66, 2021.
Liu, K-Z., X-M. Sun, A. R. Teel, and J. Liu, "Stability analysis for networked control systems with sampling, transmission protocols and input delays", Nonlinear Analysis: Hybrid Systems, vol. 39, 2021.
Liu, Y., J. Liu, and W. Li, "Stabilization of Highly Nonlinear Stochastic Coupled Systems via Periodically Intermittent Control", IEEE Transactions on Automatic Control, vol. 66, 2021.

2020

Fitzsimmons, M., and J. Liu, "A Necessary Condition on Chain Reachable Robustness of Dynamical Systems", IFAC World Congress, 2020.
Zhou, B., J. Liu, W. Sun, R. Chen, C. J. Tomlin, and Y. Yuan, "pbSGD: Powered Stochastic Gradient Descent Methods for Accelerated Nonconvex Optimization", International Joint Conference on Artificial Intelligence (IJCAI), accepted, 2020.
Farsi, M., and J. Liu, "Structured Online Learning-based Control of Continuous-time Nonlinear Systems", IFAC World Congress, 2020.
Zhang, H., J. Liu, S. Xu, and Z. Zhang, "Practical Stabilization of Networked Takagi-Sugeno Fuzzy Systems via Improved Jensen Inequalities", IEEE Transactions on Cybernetics, 2020.
Zhao, Y., Y. Li, L. Sentis, U. Topcu, and J. Liu, "Reactive task and motion planning for robust whole-body dynamic locomotion in constrained environments", The International Journal of Robotics Research, accepted, 2020.

2019

M. Zibaeenejad, H., and J. Liu, "Auditor product and controller synthesis for non-deterministic transition systems with practical LTL specifications", IEEE Transactions on Automatic Control, 2019.
Zhang, H., J. Liu, and S. Xu, "H-infinity load frequency control of networked power systems via an event-triggered scheme", IEEE Transactions on Industrial Electronics, 2019.
He, Y., X-M. Sun, J. Liu, and Y. Wu, "Input-to-state stability analysis for homogeneous hybrid systems with bounded time-varying delays", International Journal of Control, 2019.
Farsi, M., and J. Liu, "Nonlinear optimal feedback control and stability analysis of solar photovoltaic systems", IEEE Transactions on Control Systems Technology, 2019.
Yuan, Y., M. Li, J. Liu, and C. J. Tomlin, "On the powerball method: variants of descent methods for accelerated optimization", IEEE Control Systems Letters , vol. 3, pp. 601–606, 2019.
He, Y., X-M. Sun, J. Liu, and Y. Wu, "Stability analysis for homogeneous hybrid systems with delays", IEEE Transactions on Systems, Man, and Cybernetics: Systems, 2019.

2018

Li, Y., and J. Liu, "Robustly complete reach-and-stay control synthesis for switched systems via interval analysis", American Control Conference (ACC), 2018. PDF icon PDF (288.31 KB)
Li, Y., and J. Liu, "ROCS: A robustly complete control synthesis tool for nonlinear dynamical systems", ACM International Conference on Hybrid Systems: Computation and Control (HSCC), 2018. PDF icon PDF (775.29 KB)
Larocque, L., and J. Liu, "Sampling-based motion planning with mu-calculus specifications without steering", IEEE International Conference on Robotics and Automation (ICRA), 2018.
Liu, J., and A. R. Teel, "Hybrid systems with memory: existence and well-posedness of generalized solutions", SIAM Journal on Control and Optimization, vol. 56, pp. 1011–1037, 2018.
Li, Y., and J. Liu, "Invariance control synthesis for switched nonlinear systems: an interval analysis approach", IEEE Transactions on Automatic Control, vol. 63, pp. 2206–2211, 2018. PDF icon PDF (255.85 KB)
Prabhakar, P., J. Liu, and R. M. Murray, "Simulations and bisimulations for analysis of stability with respect to inputs of hybrid systems", Discrete Event Dynamic Systems, vol. 28, pp. 349–374, 2018. PDF icon PDF (890.32 KB)

2017

Ordóñez, P., A. R. Mill, T. J. Dodd, and J. Liu, "Formal verification of a gain scheduling control scheme", Mediterranean Conference on Control and Automation (MED): IEEE, 2017.
Liu, J., "Robust abstractions for control synthesis: Completeness via robustness for linear-time properties", ACM International Conference on Hybrid Systems: Computation and Control (HSCC), 2017. PDF icon PDF (844.42 KB)
Montana, F. J., J. Liu, and T. J. Dodd, "Sampling-based path planning for multi-robot systems with co-safe linear temporal logic specifications", Critical Systems: Formal Methods and Automated Verification, vol. 10471: Springer, pp. 150–164, 2017.
Montana, F. J., J. Liu, and T. J. Dodd, "Sampling-based reactive motion planning with temporal logic constraints and imperfect state information", Critical Systems: Formal Methods and Automated Verification, vol. 10471: Springer, pp. 134–149, 2017.
Nilsson, P., N. Ozay, and J. Liu, "Augmented finite transition systems as abstractions for control synthesis", Journal of Discrete Event Dynamic Systems, vol. 27, pp. 301–340, 2017. PDF icon PDF (1.31 MB)

2016

Liu, J., and A. R. Teel, "Hybrid Dynamical Systems with Finite Memory", Recent Results on Nonlinear Delay Control Systems, pp. 261–273, 2016. PDF icon PDF (170.92 KB)
Li, Y., and J. Liu, "An interval analysis approach to invariance control synthesis for discrete-time switched systems", IEEE Conference on Decision and Control (CDC), 2016. PDF icon PDF (321.71 KB)
Prabhakar, P., and J. Liu, "Bisimulations for input-output stability of hybrid systems", IEEE Conference on Decision and Control (CDC), 2016. PDF icon PDF (232.34 KB)
Li, Y., and J. Liu, "Computing maximal invariant sets for switched nonlinear systems", IEEE Multi-Conference on Systems and Control (MSC), 2016. PDF icon PDF (208.53 KB)
Montana, F. J., J. Liu, and T. J. Dodd, "Sampling-based stochastic optimal control with metric interval temporal logic specifications", IEEE Multi-Conference on Systems and Control (MSC), 2016. PDF icon PDF (283.39 KB)
Liu, J., and N. Ozay, "Finite abstractions with robustness margins for temporal logic-based control synthesis", Nonlinear Analysis: Hybrid Systems, vol. 22, pp. 1–15, 2016. PDF icon PDF (703.92 KB)
Liu, J., and A. R. Teel, "Invariance principles for hybrid systems with memory", Nonlinear Analysis: Hybrid Systems, vol. 21, pp. 130–138, 2016. PDF icon PDF (385.21 KB)
Liu, J., and A. R. Teel, "Lyapunov-based sufficient conditions for stability of hybrid systems with memory", IEEE Transactions on Automatic Control, vol. 61, pp. 1057–1062, 2016. PDF icon PDF (221.91 KB)
Liu, K-Z., X-M. Sun, J. Liu, and A. R. Teel, "Stability theorems for delay differential inclusions", IEEE Transactions on Automatic Control, vol. 61, pp. 3215–3220, 2016. PDF icon PDF (259.84 KB)

2015

Lucio, E. Noe Amezqu, J. Liu, and T. J. Dodd, "An Interactive Approach to Monocular SLAM", Towards Autonomous Robotic Systems (TAROS), 2015. PDF icon PDF (860.37 KB)
Li, Y., J. Liu, and N. Ozay, "Computing finite abstractions with robustness margins via local reachable set over-approximation", IFAC Conference on Analysis and Design of Hybrid Systems (ADHS), 2015. PDF icon PDF (436.03 KB)
Liu, K-Z., X-M. Sun, W. Wang, and J. Liu, "Invariance principles for delay differential inclusions", Chinese Control and Decision Conference (CCDC), 2015. PDF icon PDF (187.67 KB)
Li, Y., and J. Liu, "Switching control of differential-algebraic equations with temporal logic specifications", American Control Conference (ACC), 2015. PDF icon PDF (373.21 KB)

2014

Liu, J., and N. Ozay, "Abstraction, discretization, and robustness in temporal logic control of dynamical systems", ACM International Conference on Hybrid Systems: Computation and Control (HSCC), 2014. PDF icon PDF (1.98 MB)
Rao, A. Chakrapani, and J. Liu, "Advances in addressing challenges in complex control systems design", International Conference on Advances in Control and Optimization of Dynamical Systems (ACODS), 2014. PDF icon PDF (562.11 KB)
Sun, F., N. Ozay, E. M. Wolff, and R. M. Murray, "Efficient control synthesis for augmented finite transition systems with an application to switching protocols", American Control Conference (ACC), 2014. PDF icon PDF (848.09 KB)
Liu, J., and A. R. Teel, "Hybrid systems with memory: modelling and stability analysis via generalized solutions", IFAC World Congress, 2014. PDF icon PDF (212.99 KB)
Liu, J., and P. Prabhakar, "Switching control of dynamical systems from metric temporal logic specifications", IEEE International Conference on Robotics and Automation (ICRA), 2014. PDF icon PDF (570.84 KB)

2013

Ozay, N., J. Liu, P. Prabhakar, and R. M. Murray, "Computing augmented finite transition systems to synthesize switching protocols for polynomial switched systems", American Control Conference (ACC), 2013. PDF icon PDF (313.19 KB)
Prabhakar, P., J. Liu, and R. M. Murray, "Pre-orders for reasoning about stability properties with respect to input of hybrid systems", ACM International Conference on Embedded Software (EMSOFT) , 2013. PDF icon PDF (819.67 KB)
Zhang, H., X. Liu, X. Shen, and J. Liu, "Chaos entanglement: a new approach to generate chaos", International Journal of Bifurcation and Chaos, vol. 23, 2013. PDF icon PDF (2.36 MB)
Liu, J., H. Zhang, X. Liu, and W-C. Xie, "Distributed stochastic consensus of multi-agent systems with noisy and delayed measurements", IET Control Theory & Applications, vol. 7, pp. 1359–1369, 2013. PDF icon PDF (752.66 KB)
Zhang, H., X. Liu, X. Shen, and J. Liu, "Intermittent impulsive synchronization of hyperchaos with application to secure communication", Asian Journal of Control, vol. 15, pp. 1686–1699, 2013. PDF icon PDF (1.34 MB)
Liu, J., N. Ozay, U. Topcu, and R. M. Murray, "Synthesis of reactive switching protocols from temporal logic specifications", IEEE Transactions on Automatic Control, pp. 1771–1785, 2013. PDF icon PDF (2.71 MB)

2012

Yuan, Y., J. Liu, R. M. Murray, and J. Gonçalves, "Decentralised minimal-time dynamic consensus", American Control Conference (ACC), 2012. PDF icon PDF (245.38 KB)
Liu, J., and A. R. Teel, "Generalized solutions to hybrid systems with delays", IEEE Conference on Decision and Control (CDC), 2012. PDF icon PDF (274.64 KB)
Topcu, U., N. Ozay, J. Liu, and R. M. Murray, "On synthesizing robust discrete controllers under modeling uncertainty", ACM International Conference on Hybrid Systems: Computation and Control (HSCC), 2012. PDF icon PDF (1.07 MB)
Liu, J., U. Topcu, N. Ozay, and R. M. Murray, "Reactive controllers for differentially flat systems with temporal logic constraints", IEEE Conference on Decision and Control (CDC), 2012. PDF icon PDF (546.73 KB)
Liu, J., N. Ozay, U. Topcu, and R. M. Murray, "Switching protocol synthesis for temporal logic specifications", American Control Conference (ACC), 2012. PDF icon PDF (791.72 KB)
Zhang, H., X. Liu, and X. Shen, "A family of novel chaotic and hyperchaotic attractors from delay differential equation", Dynamics of Continuous, Discrete and Impulsive Systems Series B: Applications & Algorithms, vol. 19, pp. 411–430, 2012. PDF icon PDF (3.88 MB)
Liu, J., X. Liu, and W-C. Xie, "Class-KL estimates and input-to-state stability analysis of impulsive switched systems", Systems & Control Letters, vol. 61, pp. 738–746, 2012. PDF icon PDF (564.69 KB)
Liu, J., X. Liu, and W-C. Xie, "Global convergence of neural networks with mixed time-varying delays and discontinuous neuron activations", Information Sciences, vol. 183, pp. 92–105, 2012. PDF icon PDF (445.85 KB)
Liu, J., "On asymptotic convergence and boundedness of stochastic systems with time-delay", Automatica , vol. 48, pp. 3166–3172, 2012. PDF icon PDF (292.45 KB)

2011

Liu, J., X. Liu, and W-C. Xie, "Generalized invariance principles for switched delay systems", IMA Journal of Mathematical Control and Information, vol. 28, pp. 19–39, 2011. PDF icon PDF (233.15 KB)
Liu, J., X. Liu, and W-C. Xie, "Impulsive stabilization of stochastic functional differential equations", Applied Mathematics Letters, vol. 24, pp. 264–269, 2011. PDF icon PDF (1.01 MB)
Liu, J., X. Liu, and W-C. Xie, "Input-to-state stability of impulsive and switching hybrid systems with time-delay", Automatica , vol. 47, pp. 899–908, 2011. PDF icon PDF (840.22 KB)
Liu, J., X. Liu, and W-C. Xie, "Stability and stabilization of impulsive and switched hybrid stochastic delay systems", The Journal of Nonlinear Science and Applications, vol. 4, pp. 315–341, 2011. PDF icon PDF (760.98 KB)
Liu, J., X. Liu, and W-C. Xie, "Stochastic consensus seeking with communication delays", Automatica , vol. 47, pp. 2689–2696, 2011. PDF icon PDF (766.18 KB)

2010

Liu, J., X. Liu, and W-C. Xie, "Extending LaSalle's invariance principle to impulsive switched systems with an application to hybrid epidemic dynamics", Chinese Control and Decision Conference (CCDC), 2010. PDF icon PDF (344.03 KB)
Liu, J., X. Liu, and W-C. Xie, "Existence and uniqueness results for impulsive hybrid stochastic delay systems", Communications on Applied Nonlinear Analysis, vol. 17, pp. 37–54, 2010. PDF icon PDF (339.88 KB)
Liu, J., X. Liu, and W-C. Xie, "On the $(h_0,h)$-stabilization of switched nonlinear systems via state-dependent switching rule", Applied Mathematics and Computation, vol. 217, pp. 2067–2083, 2010. PDF icon PDF (2.32 MB)
Liu, J., "Qualitative Studies of Nonlinear Hybrid Systems", Applied Mathematics, vol. Doctor of Philosophy, 2010. PDF icon PDF (9.9 MB)

2009

Liu, J., X. Liu, and W-C. Xie, "Exponential stability of switched stochastic delay systems with non-linear uncertainties", International Journal of Systems Science, vol. 40, pp. 637–648, 2009.
Liu, J., X. Liu, and W-C. Xie, "Invariance principles for impulsive switched systems", Dynamics of Continuous, Discrete and Impulsive Systems Series B: Applications & Algorithms, vol. 16, pp. 631–654, 2009.
Liu, J., X. Liu, and W-C. Xie, "Robust stabilization of stochastic switched delay systems via state-dependent switching rule", Dynamic Systems and Applications, vol. 18, pp. 213–239, 2009.
Liu, J., X. Liu, and W-C. Xie, "Uniform stability of switched nonlinear systems", Nonlinear Analysis: Hybrid Systems, vol. 3, pp. 441–454, 2009.

2008

Liu, J., X. Liu, and W-C. Xie, "Delay-dependent robust control for uncertain switched systems with time-delay", Nonlinear Analysis: Hybrid Systems, vol. 2, pp. 81–95, 2008.

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