Manuscript Preprint

John Z. Zhang, Luke Drnach, and Ye Zhao. Mediating between Contact Feasibility and Robustness of Trajectory Optimization through Chance Complementarity Constraints. Submitted, 2021. [pdf] [code]

Zhigen Zhao, Ziyi Zhou, Michael Park, and Ye Zhao. SyDeBO: Symbolic-Decision-Embedded Bilevel Optimization for Long-Horizon Manipulation in Dynamic Environments. Submitted, 2021. [pdf]

Michael E. Cao*, Jonas Warnke*, Ye Zhao, and Samuel Coogan. Leveraging Heterogeneous Capabilities in Multi-Agent Systems for Environmental Conflict Resolution. (*equally contributed), Submitted, 2021. [pdf]

Y. Zhao, Y. Li, L. Sentis, U. Topcu, and J. Liu. Reactive Task and Motion Planning for Robust Whole-Body Dynamic Locomotion in Constrained Environments. International Journal of Robotics Research, Under review, 2021. [preprint] [video]

Journals

[J16] Lixian Zhang, Ruixian Zhang, Tong Wu, Rui Weng, Minghao Han, and Ye Zhao. Safe Reinforcement Learning with Stability Guarantee for Motion Planning of Autonomous Vehicles, IEEE Transactions on Neural Networks and Learning Systems, 2021. [pdf

[J15] Luke Drnach, and Ye Zhao. Robust Trajectory Optimization over Uncertain Terrain with Stochastic Complementarity. IEEE Robotics and Automation Letters (with ICRA option), 6(2), 1168-1175, 2021. ICRA Best Paper Award Finalist in Automation. [pdf] [video] [code] [icra-video]

[J14] Jianwen Luo, Zelin Gong, Yao Su, Lecheng Ruan, Ye Zhao, H. Harry Asada, and Chenglong Fu. Modeling and Balance Control of Supernumerary Robotic Limb for Overhead Tasks. IEEE Robotics and Automation Letters (with ICRA option), 6(2), 4125-4132, 2021. [pdf]

[J13] Jianwen Luo, Ye Zhao, Lecheng Ruan, Shixin Mao, and Chenglong Fu. Estimation of CoM and CoP Trajectories During Human Walking Based on a Wearable Visual Odometry Device. IEEE Transactions on Automation Science and Engineering, 10.1109/TASE.2020.3036530, 2020. [pdf]

[J12] Ye Zhao, and Yan Gu. An Integrated Non-periodic Planning and Exponential Stabilization Framework of Dynamic Legged Locomotion. (equally contributed authors), International Journal of Intelligent Robotics and Applications, 4(1), 95-108, 2020. [pdf]

[J11] Minghao Han, Ruixian Zhang, Lixian Zhang, Ye Zhao, and Wei Pan. Asynchronous Observer Design for Switched Linear Systems: A Tube-Based Approach. IEEE/CAA Journal of Automatica Sinica, 7.1: 70-81, 2020[pdf]

[J10] Jianwen Luo, Yao Su, Lecheng Ruan, Ye Zhao, Donghyun Kim, Luis Sentis, and Chenglong Fu. Robust Control of Bipedal Locomotion Based on a Hierarchical Framework. Robotica, 37(10), 1750-1767, 2019. [pdf]

[J9] Ye ZhaoBenito Fernandez, and Luis Sentis. Robust Optimal Planning and Control of Non-Periodic Bipedal Walking With A Centroidal Momentum Model. The International Journal of Robotics Research. 36(11): 1211-1243. September, 2017. [pdf] [video] [code]

[J8] Ye Zhao, Nicholas Paine, Steven Jorgensen, and Luis Sentis. Impedance Control and Performance Measure of Series Elastic Actuators. IEEE Transactions on Industrial Electronics. 2018, 65(3), 2817-2827. [pdf] [video] [code]

[J7] Jianwen Luo, Shuguo Wang, Ye Zhao, and Yili Fu. Variable Stiffness Control of Series Elastic Actuated Biped Locomotion. Intelligent Service Robotics. 2018, 11(3), 225-235. [pdf]

[J6] Donghyun Kim, Ye Zhao, Gray Thomas, Benito Fernandez and Luis Sentis. Stabilizing Series-Elastic Point-Foot Bipeds using Whole-Body Operational Space Control. IEEE Transactions on Robotics. 2016, 32(6), 1362-1379. IEEE-RAS TC on Whole-Body Control Best Paper Award Finalist [pdf] [video] [ArXiv]

[J5] Ye Zhao, Nicholas Paine, Kwan Suk Kim, and Luis Sentis. Stability and Performance Limits of Latency-Prone Distributed Feedback Controllers. IEEE Transactions on Industrial Electronics. 2015, 62(11), 7151-7162. [pdf] [video1] [video2] [ArXiv]

[J4] Weichao Sun, Ye Zhao, Jinfu Li, and Huijun Gao. Active Suspension Control with Frequency Band Constraints and Actuator Input Delay. IEEE Transactions on Industrial Electronics. 2012, 59(1): 530-537. [pdf]

[J3] Ye Zhao, Lixian Zhang, Shen Shen, and Huijun Gao. Robust Stability Criterion for Discrete-time Uncertain Markovian Jumping Neural Networks with Defective Statistics of Modes Transitions. IEEE Transactions on Neural Networks. 2011, 22(1): 164-170. [pdf]

[J2] Weichao Sun, Jinfu Li, Ye Zhao, and Huijun Gao. Vibration Control for Active Seat Suspension Systems via Dynamic Output Feedback with Limited Frequency Characteristic. Mechatronics. 2011, 21(1): 250-260. [pdf]

[J1] Lixian Zhang, Naigang Cui, Ming Liu, and Ye Zhao. Asynchronous Filtering of Discrete-Time Switched Linear Systems with Average Dwell Time. IEEE Transactions on Circuits and Systems I: Regular Papers. 2011, 58(5): 1109-1118. [pdf]

Referred Conference Proceedings

[RCP18] Sergio Aguilera, Muhammad Murtaza, Ye Zhao, and Seth Hutchinson. Mass Estimation of a Moving Object Through Minimal Manipulation Interaction. International Conference on Robotics and Automation (ICRA), 2021.

[RCP17] Jonas Warnke*, Abdulaziz Shamsah*, Yingke Li*, and Ye Zhao. Safe Locomotion Navigation in Partially Observable Environments with Uneven Terrain, (*equally contributed), IEEE Conference on Decision and Control, 2020. [pdf] [video] [code]

[RCP16] Lasitha Wijayarathne, Qie Sima, Ziyi Zhou, Ye Zhao*, and Frank L. Hammond III*. Simultaneous Trajectory Optimization and Force Control with Soft Contact Mechanics. (*co-corresponding authors), IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), 2020. [pdf]

[RCP15] Xiaofeng Guo, Bryan Blaise, Jennifer Molnar, Jeremiah Coholich, Shantanu Padte, Ye Zhao*, and Frank Hammond III*. Soft Foot Sensor Design and Terrain Classification for Dynamic Legged Locomotion. (*co-corresponding authors), IEEE International Conference on Soft Robotics (RoboSoft), 2020. [pdf] [video]

[RCP14] Sutej Kulgod*, Junda Huang*, Wentao Chen*, Ye Zhao, and Nikolay Atanasov. Temporal Logic Guided Locomotion Planning and Control in Cluttered Environments, (*first three authors equally contributed), American Control Conference, 2020. [pdf]

[RCP13] Ziyi Zhou, and Ye Zhao. Accelerated ADMM based Trajectory Optimization for Legged Locomotion with Coupled Rigid Body Dynamics, American Control Conference (ACC), 2020. [pdf] [video]

[RCP12] Marko Mihalec, Ye Zhao, and Jingang Yi. Recoverability Estimation and Control For A Walker Model Under Foot Slip Conditions. IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM), 2020. [pdf]

[RCP11] Jianwen Luo, Ye Zhao, Donghyun Kim, Oussama Khatib, and Luis Sentis. Locomotion Control of Three Dimensional Passive-Foot Biped Robot Based on Whole Body Operational Space Framework. IEEE International Conference on Robotics and Biomimetics, December, 2017. [pdf]

[RCP10] Ye Zhao*Jonathan Matthis*, Sean L. Barton*, Mary Hayhoe and Luis Sentis. Towards Understanding Visually Guided Locomotion over Complex and Rough Terrain: A Phase-Space Planning Method. IEEE International Workshop on Advanced Robotics and its Social Impacts, March2017. (*equally contributed authors) [pdf]

[RCP9] Ye Zhao and Luis Sentis. Passivity of Time-Delayed Whole-Body Operational Space Control with Series Elastic Actuation. IEEE-RAS Conference on Humanoid Robots (Humanoids), 2016. [pdf] [suppl]

[RCP8] Ye Zhao, Ufuk Topcu and Luis Sentis. High-Level Planner Synthesis for Whole-Body Locomotion in Unstructured Environments. IEEE Conference on Decision and Control (CDC), 2016. [pdf] [video] [suppl]

[RCP7] Ye Zhao, Benito Fernandez, and Luis Sentis. Robust Phase-Space Planning for Agile Legged Locomotion over Various Terrain Topologies. Proceedings of Robotics: Science and Systems (RSS), 2016. [pdf] [video] [slides]

[RCP6] Ye Zhao, Donghyun Kim, Gray Thomas and Luis Sentis. Hybrid Multi-Contact Dynamics for Wedge Jumping Locomotion Behaviors. International Conference on Hybrid Systems: Computation and Control (HSCC), 2015. [pdf]

[RCP5] Ye Zhao, Nicholas Paine, and Luis Sentis. Feedback Parameter Selection for Impedance Control of Series Elastic Actuators. IEEE-RAS International Conference on Humanoid Robots (Humanoids), 2014. [pdf]

[RCP4] Ye Zhao, Nicholas Paine, and Luis Sentis. Sensitivity Comparison To Loop Latencies Between Damping Versus Stiffness Feedback Control Action In Distributed Controllers. ASME 2014 Dynamic Systems and Control Conference (DSCC), 2014. [pdf]

[RCP3] Donghyun Kim, Ye Zhao, Gray Thomas, and Luis Sentis. Empirical Modifications To a Phase Space Planner Which Compensate For Low Stiffness Actuation in a Planar, Point-Foot, Biped Robot. ASME 2014 Dynamic Systems and Control Conference (DSCC), 2014. [pdf]

[RCP2] Ye Zhao, Donghyun Kim, Benito Fernandez and Luis Sentis. Phase Space Planning and Robust Control for Data-Driven Locomotion Behaviors. IEEE-RAS International Conference on Humanoid Robots (Humanoids), 2013. [pdf]

[RCP1] Ye Zhao, Luis Sentis. A Three Dimensional Foot Placement Planner for Locomotion in Very Rough Terrains. IEEE-RAS International Conference on Humanoid Robots (Humanoids), 2012. [pdf]

Thesis

Ye Zhao. A Planning and Control Framework of Humanoid Systems: Robust, Optimal, and Real-time Performance. Ph.D. Dissertation, The University of Texas at Austin, December 2016. [pdf]

Conference Abstracts and Workshops

[CP19] Zhaoyuan Gu, Nathan Boyd, and Ye Zhao. Planning for Crossed-Leg Disturbance Rejection. Dynamic Walking, 2021. [pdf] [poster]

[CP18] John Z. Zhang, Luke Drnach, and Ye Zhao. Can Chance-Constrained Contact Uncertainty Quantification Improve Feasibility of Robust Trajectory Optimization? Dynamic Walking, 2021. [pdf] [poster]

[CP17] Ziyi Zhou, Bruce Wingo, Nathan Boyd, Seth Hutchinson, and Ye Zhao. Momentum-Aware Planning Synthesis for Dynamic Legged Locomotion. Dynamic Walking, 2021. [pdf] [poster]

[CP16] Abdulaziz Shamsah*, Jonas Warnke*, Zhaoyuan Gu, and Ye Zhao. Navigation in Dynamic Workspaces: Integrated Task and Motion Planning for Bipedal Locomotion. (*equally contributed) Dynamic Walking, 2021. [pdf] [poster].

[CP15] Luke Drnach, and Ye Zhao. Towards Data-Driven Contact Model Estimation using Inverse Optimization. Dynamic Walking, 2021 [pdf].

[CP14] Jonas Warnke*, Abdulaziz Shamsah*, Yingke Li, Samuel Coogan, and Ye Zhao. Robust Locomotion Navigation in Partially Observable Environments with Safety Guarantees. (*equally contributed) RSS Workshop on Robust Autonomy. 2020. [pdf]

[CP13] Luke Drnach, and Ye Zhao. Robust Trajectory Optimization for Safe Locomotion over Uncertain Terrain. RSS Workshop on Robust Autonomy. 2020. [pdf] [video]

[CP12] Luke Drnach, and Ye Zhao. Trajectory Optimization over Uncertain Terrain using Stochastic Complementarity. Dynamic Walking Abstract, 2020. [poster]

[CP11] Ye Zhao. Robust Task and Motion Planning for Agile Locomotion In The Now. Dynamic Walking Abstract, 2020. [video] [pdf]

[CP10] Akash Harapanahalli*, Emil Muly*, Hogan Welch*, Timothy Brumfiel*, Zhengyang Weng*, et al., Luke Drnach, Dong Jae Lee, and Ye Zhao. Towards a Biomimetic and Dexterous Robot Avatar: Design, Control, and Kinematics Considerations. (the first five authors equally contributed) IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM), Best Late Breaking Results Poster Award, 2020. (this work also won First Place in the Hardware, Devices & Robotics Track of the 2021 GaTech VIP Innovation Competition) [abstract] [poster] [video1] [video2

[CP9] Ye ZhaoUfuk Topcu and Luis Sentis. Reactive Task Planner Synthesis of Dynamic Multi-Contact Locomotion in Constrained Environments. RSS 2016 Workshop on Task and Motion Planning, Ann Arbor, Michigan. [pdf]

[CP8] Ye Zhao, Ufuk Topcu and Luis Sentis. Towards Formal Planner Synthesis for Unified Legged and Armed Locomotion in Constrained Environments. Proceedings of Dynamic Walking, 2016. [pdf]

[CP7] Ye Zhao, Jonathan Matthis, Sean L. Barton, Mary Hayhoe and Luis Sentis. Exploring Visually Guided Locomotion over Rough Terrain: A Phase Space Planning Method. Proceedings of Dynamic Walking. 2016. [pdf]

[CP6] Ye Zhao and Luis Sentis. Robust Optimal Control and High-Level Planner Synthesis for Locomotion over Various Terrain Topologies. 2016 ICRA Workshop on Legged Robot Falling: Fall Detection, Damage Prevention, and Recovery Actions.

[CP5] Donghyun Kim, Ye Zhao, Gray Thomas, and Luis Sentis. Whole-Body Operational Space Control: Undirectional Walking of a Point-Foot Series Elastic Biped. Proceedings of Dynamic Walking, 2015.

[CP4] Donghyun Kim, Ye Zhao, Gray Thomas and Luis Sentis. Towards Agility in Compliant Point-Foot BipedsProceedings of Dynamic Walking, 2014. [pdf]

[CP3] Huijun Gao, Jia You, Peng Shi, Lixian Zhang and Ye Zhao. Stabilization of Continuous-Time Markov Jump Linear Systems with Defective Statistics of Modes Transitions. Proceedings of the IFAC 18th world congress, Milano, Italy, 2011. [pdf]

[CP2] Lixian Zhang, Yu Leng, Lingjie Chen, and Ye Zhao. A BRL for A Class of Discrete-time Markov Jump Linear System with Piecewise-Constant TPs. Proceedings of the IFAC 18th world congress, Milano, Italy, 2011. [pdf]

[CP1] Ye Zhao and Lixian Zhang. On Stability of Markovian Jumping Neural Networks with both unknown and uncertain transition probabilities. International Conference on Computational Intelligence and Vehicular System, Cheju, Korea, 2010, pp. 125-128.

Book Chapters

Y. Zhao, and L. Sentis. Distributed Impedance Control of Latency-Prone Robotic Systems with Series Elastic Actuation. Book Chapter, Stability, Control and Application of Time-delay SystemsElsevier, pp: 23-51, 2019, Elsevier. [pdf]