Stability of nonlinear systems: A structural approach. - Eugenius Kaszkurewicz; Liu Hsu (Autom., 1979)

Automated synthesis of decentralized tuning regulators for systems with measurable DC gain. - Liu Hsu; Maria Chan; Amit Bhaya (Autom., 1992)

Variable Structure Adaptive Cascade Control of Multi-Link Robot Manipulators with Flexible Joints: The Case of Arbitrary Uncertain Flexibilities. - Liu Hsu; Raul Guenther (ICRA (2), 1993)

Analysis and design of I/O based variable structure adaptive control. - Liu Hsu; Aldayr Dantas de Araújo; Ramon R. Costa (IEEE Trans. Autom. Control., 1994)

New results on output-feedback variable structure model-reference adaptive control: design and stability analysis. - Liu Hsu; Fernando C. Lizarralde; Aldayr Dantas de Araújo (IEEE Trans. Autom. Control., 1997)

Comments and further results regarding "On variable structure output feedback controllers". - Liu Hsu; Fernando C. Lizarralde (IEEE Trans. Autom. Control., 1998)

Passive Arm Based Dynamic Positioning System for Remotely Operated Underwater Vehicles. - Liu Hsu; Ramon R. Costa; Fernando C. Lizarralde; José Paulo Vilela Soares da Cunha (ICRA, 1999)

A globally convergent frequency estimator. - Liu Hsu; Romeo Ortega; Gilney Damm (IEEE Trans. Autom. Control., 1999)

Stable adaptive visual servoing for moving targets. - Liu Hsu; Ramon R. Costa; Paulo L. S. Aquino (ACC, 2000)

Dynamic positioning of remotely operated underwater vehicles. - Liu Hsu; Ramon R. Costa; Fernando C. Lizarralde; José Paulo Vilela Soares da Cunha (IEEE Robotics Autom. Mag., 2000)

Model-reference sliding mode control of uncertain multivariable systems. - Liu Hsu; José Paulo Vilela Soares da Cunha; Ramon R. Costa (CDC, 2001)

Adaptive visual tracking for motions on smooth surfaces. - Liu Hsu; Alessandro R. L. Zachi; Fernando C. Lizarralde (CDC, 2001)

Multivariable MRAC using high frequency gain matrix factorization. - Alvaro K. Imai; Ramon R. Costa; Liu Hsu; Gang Tao; Petar V. Kokotovic (CDC, 2001)

Adaptive control of multivariable systems with reduced prior knowledge. - Romeo Ortega; Liu Hsu; Alessandro Astolfi (CDC, 2001)

Experimental results on smooth sliding control of uncertain systems. - Alessandro Jacoud Peixoto; Fernando C. Lizarralde; Liu Hsu (CDC, 2001)

A Solution to the Adaptive Visual Servoing Problem. - Alessandro Astolfi; Liu Hsu; Mariana S. Netto; Romeo Ortega (ICRA, 2001)

Adaptive backstepping control design for MIMO plants using factorization. - Ramon R. Costa; Liu Hsu; Alvaro K. Imai; Gang Tao (ACC, 2002)

Further results on smooth sliding control of uncertain systems. - Alessandro Jacoud Peixoto; Fernando C. Lizarralde; Liu Hsu (ACC, 2002)

Two solutions to the adaptive visual servoing problem. - Alessandro Astolfi; Liu Hsu; Mariana S. Netto; Romeo Ortega (IEEE Trans. Robotics Autom., 2002)

Design of first order approximation filters applied to sliding mode control. - José Paulo Vilela Soares da Cunha; Ramon R. Costa; Liu Hsu (CDC, 2003)

Multivariable adaptive control with transient overparametrization. - Liu Hsu; Ramon R. Costa; Alvaro K. Imai (CDC, 2003)

Immersion and invariance model reference adaptive control: new parameterizations for the problem. - Romeo Ortega; Alessandro Astolfi; Liu Hsu (CDC, 2003)

Variable structure model reference adaptive control for systems with unknown high frequency gain. - Lin Yan; Liu Hsu; Ramon R. Costa; Fernando C. Lizarralde (CDC, 2003)

Mobile robot navigation using sensor fusion. - Fernando C. Lizarralde; Eduardo V. L. Nunes; Liu Hsu; John T. Wen (ICRA, 2003)

Lyapunov-based adaptive control of MIMO systems. - Ramon R. Costa; Liu Hsu; Alvaro K. Imai; Petar V. Kokotovic (Autom., 2003)

Immersion and invariance adaptive control of linear multivariable systems. - Romeo Ortega; Liu Hsu; Alessandro Astolfi (Syst. Control. Lett., 2003)

Output-feedback model-reference sliding mode control of uncertain multivariable systems. - José Paulo Vilela Soares da Cunha; Liu Hsu; Ramon R. Costa; Fernando C. Lizarralde (IEEE Trans. Autom. Control., 2003)

Globally stable output-feedback sliding mode control with asymptotic exact tracking. - Eduardo V. L. Nunes; Liu Hsu; Fernando C. Lizarralde (ACC, 2004)

Immersion and invariance adaptive visual servoing of manipulators with uncertain dynamics. - Alessandro R. L. Zachi; Liu Hsu; Romeo Ortega; Fernando C. Lizarralde (ACC, 2004)

Performing Stable 2D Adaptive Visual Positioning/tracking Control without Explicit Depth Measurement. - Alessandro R. L. Zachi; Liu Hsu; Fernando C. Lizarralde (ICRA, 2004)

Cascade Control of Uncertain Manipulator Systems through Immersion and Invariance Adaptive Visual Servoing. - Alessandro R. L. Zachi; Liu Hsu; Romeo Ortega; Fernando C. Lizarralde (ICRA, 2004)

Multivariable adaptive control using high-frequency gain matrix factorization. - Alvaro K. Imai; Ramon R. Costa; Liu Hsu; Gang Tao; Petar V. Kokotovic (IEEE Trans. Autom. Control., 2004)

Output-feedback sliding mode control for global asymptotic tracking of uncertain systems using locally exact differentiators. - Eduardo V. L. Nunes; Liu Hsu; Fernando C. Lizarralde (ACC, 2006)

Sliding Mode Control of Uncertain Systems with Arbitrary Relative Degree and Unknown Control Direction: Theory and Experiments. - Alessandro Jacoud Peixoto; Tiago Roux Oliveira; Liu Hsu (CDC, 2006)

Hybrid Vision-force Robot Control for Tasks on Unknown Smooth Surfaces. - Antonio C. Leite; Fernando C. Lizarralde; Liu Hsu (ICRA, 2006)

Mitigation of symmetry condition in positive realness for adaptive control. - Itzhak Barkana; Marcelo C. M. Teixeira; Liu Hsu (Autom., 2006)

A variable structure MRAC with expected transient and steady-state performance. - Lin Yan; Liu Hsu; Xiuxia Sun (Autom., 2006)

Dynamic Control of Uncertain Manipulators Through Immersion and Invariance Adaptive Visual Servoing. - Alessandro R. L. Zachi; Liu Hsu; Romeo Ortega; Fernando C. Lizarralde (Int. J. Robotics Res., 2006)

Sliding Mode Output Tracking of Uncertain Nonlinear Systems with Unknown Control Direction. - Tiago Roux Oliveira; Alessandro Jacoud Peixoto; Liu Hsu (ACC, 2007)

Global tracking sliding mode control for uncertain nonlinear systems based on variable high gain observer. - Alessandro Jacoud Peixoto; Liu Hsu; Ramon R. Costa; Fernando C. Lizarralde (CDC, 2007)

Lyapunov/Passivity-Based Adaptive Control of Relative Degree Two MIMO Systems With an Application to Visual Servoing. - Liu Hsu; Ramon R. Costa; Fernando C. Lizarralde (IEEE Trans. Autom. Control., 2007)

Arbitrarily small damping allows global output feedback tracking of a class of Euler-Lagrange systems. - Eduardo V. L. Nunes; Liu Hsu; Fernando C. Lizarralde (ACC, 2008)

Peaking free output-feedback control of uncertain nonlinear systems. - Tiago Roux Oliveira; Alessandro Jacoud Peixoto; Liu Hsu (ACC, 2008)

A variable structure model reference robust control without a prior knowledge of high frequency gain sign. - Lin Yan; Liu Hsu; Ramon R. Costa; Fernando C. Lizarralde (Autom., 2008)

Design of First-Order Approximation Filters for Sliding-Mode Control of Uncertain Systems. - José Paulo Vilela Soares da Cunha; Ramon R. Costa; Liu Hsu (IEEE Trans. Ind. Electron., 2008)

Sliding mode control of uncertain multivariable nonlinear systems applied to uncalibrated robotics visual servoing. - Tiago Roux Oliveira; Alessandro Jacoud Peixoto; Antonio C. Leite; Liu Hsu (ACC, 2009)

Globally stable adaptive formation control of Euler-Lagrange agents via potential functions. - Ademir Rodrigues Pereira; Liu Hsu; Romeo Ortega (ACC, 2009)

Dwell-time and monitoring schemes for peaking avoidance in high-gain observer based output-feedback control. - Tiago Roux Oliveira; Alessandro Jacoud Peixoto; Liu Hsu (CDC, 2009)

Global tracking output-feedback sliding mode control design via norm estimators and variable high gain observer. - Alessandro Jacoud Peixoto; Tiago Roux Oliveira; Liu Hsu (CDC, 2009)

Kinematic reconfigurability of mobile robots on irregular terrains. - Gustavo Medeiros Freitas; Fernando C. Lizarralde; Liu Hsu; Ney Robinson Salvi dos Reis (ICRA, 2009)

Peaking free variable structure control of uncertain linear systems based on a high-gain observer. - José Paulo Vilela Soares da Cunha; Ramon R. Costa; Fernando C. Lizarralde; Liu Hsu (Autom., 2009)

Hybrid Adaptive Vision - Force Control for Robot Manipulators Interacting with Unknown Surfaces. - Antonio C. Leite; Fernando C. Lizarralde; Liu Hsu (Int. J. Robotics Res., 2009)

Global Exact Tracking for Uncertain Systems Using Output-Feedback Sliding Mode Control. - Eduardo V. L. Nunes; Liu Hsu; Fernando C. Lizarralde (IEEE Trans. Autom. Control., 2009)

Adaptive formation control of dynamic nonholonomic systems using potential functions. - Josiel A. Gouvea; Ademir Rodrigues Pereira; Liu Hsu; Fernando C. Lizarralde (ACC, 2010)

A cascaded-based hybrid position-force control for robot manipulators with nonnegligible dynamics. - Antonio C. Leite; Fernando C. Lizarralde; Liu Hsu (ACC, 2010)

Global exact tracking for uncertain multivariable linear systems by output feedback sliding mode control. - Eduardo V. L. Nunes; Alessandro Jacoud Peixoto; Tiago Roux Oliveira; Liu Hsu (ACC, 2010)

Multi-objective optimization for kinematic reconfiguration of mobile robots. - Gustavo Medeiros Freitas; Gabriel Gleizer; Fernando C. Lizarralde; Liu Hsu (CASE, 2010)

Kinematic reconfigurability control for an environmental mobile robot operating in the Amazon rain forest. - Gustavo Medeiros Freitas; Gabriel Gleizer; Fernando C. Lizarralde; Liu Hsu; Ney Robinson Salvi dos Reis (J. Field Robotics, 2010)

Global tracking for robot manipulators using a simple causal PD controller plus feedforward. - Eduardo V. L. Nunes; Liu Hsu (Robotica, 2010)

Sliding Mode Control of Uncertain Multivariable Nonlinear Systems With Unknown Control Direction via Switching and Monitoring Function. - Tiago Roux Oliveira; Alessandro Jacoud Peixoto; Liu Hsu (IEEE Trans. Autom. Control., 2010)

Output-feedback global tracking for unknown control direction plants with application to extremum-seeking control. - Tiago Roux Oliveira; Liu Hsu; Alessandro Jacoud Peixoto (Autom., 2011)

Inertially stabilized platforms using only two gyroscopic measures and sensitivity analysis to unmodeled motion. - Andrei Battistel; Fernando C. Lizarralde; Liu Hsu (ACC, 2012)

Binary MIMO MRAC using a passifying multiplier - A smooth transition to sliding mode control. - Ivanko Yanque; Eduardo V. L. Nunes; Ramon R. Costa; Liu Hsu (ACC, 2012)

Binary robust adaptive control for global tracking of uncertain systems with unknown high-frequency-gain sign. - Tiago Roux Oliveira; Alessandro Jacoud Peixoto; Eduardo V. L. Nunes; Liu Hsu (VSS, 2012)

Global real-time optimization by output-feedback extremum-seeking control with sliding modes. - Tiago Roux Oliveira; Alessandro Jacoud Peixoto; Liu Hsu (J. Frankl. Inst., 2012)

Formation control of dynamic nonholonomic mobile robots with curvature constraints via potential functions. - Josiel A. Gouvea; Fernando C. Lizarralde; Liu Hsu (ACC, 2013)

Direct multivariable MRAC design without gain symmetry conditions. - Liu Hsu; Andrei Battistel; Eduardo V. L. Nunes (ACC, 2013)

Global output-feedback extremum seeking control via monitoring functions. - Nerito Oliveira Aminde; Tiago Roux Oliveira; Liu Hsu (CDC, 2013)

Terrain model-based anticipative control for articulated vehicles with low bandwidth actuators. - Gustavo Medeiros Freitas; Fernando C. Lizarralde; Liu Hsu; Marcel Bergerman (ICRA, 2013)

Adaptive visual servoing scheme free of image velocity measurement for uncertain robot manipulators. - Fernando C. Lizarralde; Antonio C. Leite; Liu Hsu; Ramon R. Costa (Autom., 2013)

Monitoring function based extremum seeking control for uncertain relative degrees with light source seeking experiments. - Tiago Roux Oliveira; Nerito Oliveira Aminde; Liu Hsu (CDC, 2014)

Multivariable BMRAC extension to arbitrary relative degree using Global Robust Exact Differentiators. - Andrei Battistel; Eduardo V. L. Nunes; Liu Hsu (VSS, 2014)

Extremum seeking control via monitoring function and time-scaling for plants of arbitrary relative degree. - Liu Hsu; Tiago Roux Oliveira; José Paulo V. S. Cunha (VSS, 2014)

Global exact tracking for uncertain MIMO linear systems by output feedback sliding mode control. - Eduardo V. L. Nunes; Alessandro Jacoud Peixoto; Tiago Roux Oliveira; Liu Hsu (J. Frankl. Inst., 2014)

Multivariable MRAC Design Without Gain Symmetry Conditions Using a Stabilizing Multiplier. - Liu Hsu; Andrei Battistel; Eduardo V. L. Nunes (IEEE Trans. Autom. Control., 2014)

Control and obstacle collision avoidance method applied to human-robot interaction. - Antonio C. Leite; Thiago B. Almeida-Antonio; Pål Johan From; Fernando C. Lizarralde; Liu Hsu (ARSO, 2015)

Kinematic modeling and control design of a multifingered robot hand. - Matheus F. Reis; Antonio C. Leite; Fernando C. Lizarralde; Liu Hsu (ISIE, 2015)

Visual Servoing for Object Manipulation with a Multifingered Robot Hand*. - Matheus F. Reis; Antonio C. Leite; Pål Johan From; Liu Hsu; Fernando C. Lizarralde (SyRoCo, 2015)

Global tracking for a class of uncertain nonlinear systems with unknown sign-switching control direction by output feedback. - Tiago Roux Oliveira; Alessandro Jacoud Peixoto; Liu Hsu (Int. J. Control, 2015)

Adaptive feedforward control for high precision force control of electromechanical fatigue testing machine. - Alessandro S. de Lima; Diego Pereira-Dias; Alessandro Jacoud Peixoto; Liu Hsu (ACC, 2016)

Optimal control allocation of quadrotor UAVs subject to actuator constraints. - Joao C. Monteiro; Fernando C. Lizarralde; Liu Hsu (ACC, 2016)

Multivariable Super-Twisting Algorithm for a class of systems with uncertain input matrix. - Paulo V. N. M. Vidal; Eduardo V. L. Nunes; Liu Hsu (ACC, 2016)

Adaptive sliding mode control for disturbances with unknown bounds. - Tiago Roux Oliveira; José Paulo V. S. Cunha; Liu Hsu (VSS, 2016)

Output-Feedback Multivariable Global Variable Gain Super-Twisting Algorithm. - Paulo V. N. M. Vidal; Eduardo V. L. Nunes; Liu Hsu (IEEE Trans. Autom. Control., 2017)

Sliding Mode Control for Disturbance Rejection in Systems with Measurement Delay using PDE-Backstepping Predictor. - Hardy L. C. P. Pinto; Tiago Roux Oliveira; Liu Hsu; Miroslav Krstic (ACC, 2018)

Robustness of Smooth Sliding Control to Unmodeled Dynamics: Overcoming First-Order SMC and Super-Twisting Algorithm. - Tiago Roux Oliveira; Liu Hsu (VSS, 2018)

Time-Shift Sliding Mode Predictor for Fault Reconstruction of Time-Delay Systems Using Least Squares Identification. - Hardy L. C. P. Pinto; Tiago Roux Oliveira; Liu Hsu (VSS, 2018)

Passivity-based Cascade Hybrid Pose/Force Robot Control. - Rodolpho Ribeiro; Liu Hsu; Ramon R. Costa; Fernando C. Lizarralde (CASE, 2019)

On the Fragility of Multivariable Super-Twisting Algorithm for non-Symmetric Uncertain Input Matrix. - Timon Asch Keijock; Eduardo V. L. Nunes; Liu Hsu (CDC, 2019)

A Comparative Study of Sensor Fault Detection Approaches applied to an Autonomous Solar-powered Aircraft. - Paulo Padrao; Liu Hsu; Michael Vilzmann; Konstantin Kondak (ICAR, 2019)

Sliding mode observer for fault reconstruction of time-delay and sampled-output systems - a Time Shift Approach. - Hardy Leonardo da Cunha Pereira Pinto; Tiago Roux Oliveira; Liu Hsu (Autom., 2019)

Sliding Mode Control for Stabilization and Disturbance Rejection of Uncertain Systems with Output Delays via Predictor and Super-Twisting Observer. - Hardy Leonardo da Cunha Pereira Pinto; Tiago Roux Oliveira; Liu Hsu; Miroslav Krstic (CDC, 2021)

Output-feedback binary adaptive control of MIMO systems using monitoring function. - Renato Borba Teixeira; Tiago Roux Oliveira; Ramon R. Costa; Liu Hsu (J. Frankl. Inst., 2021)

Multivariable Sliding Mode-based Extremum Seeking Control via Periodic Switching Function and Cyclic Search. - Nerito Oliveira Aminde; Tiago Roux Oliveira; Liu Hsu (VSS, 2022)

Chattering is a Persistent Problem in Classical and Modern Sliding Mode Control. - Liu Hsu; José Paulo V. S. Cunha (VSS, 2022)

Binary Model Reference Adaptive Control under Disturbances. - Victor Hugo Pereira Rodrigues; Liu Hsu; Tiago Roux Oliveira (VSS, 2022)

Smooth sliding control to overcome chattering arising in classical SMC and super-twisting algorithm in the presence of unmodeled dynamics. - Tiago Roux Oliveira; Liu Hsu; Eduardo V. L. Nunes (J. Frankl. Inst., 2022)

Event-Triggered Extremum Seeking Control Systems. - Victor Hugo Pereira Rodrigues; Tiago Roux Oliveira; Liu Hsu; Mamadou Diagne; Miroslav Krstic (CoRR, 2023)

Minimum Reaching Time Multivariable Super-Twisting Control Design. - José Claudio Geromel; Liu Hsu; Eduardo V. L. Nunes (CDC, 2024)

Multivariable Extremum Seeking Control for Dynamic Maps through Sliding Modes and Periodic Switching Function. - Nerito Oliveira Aminde; Tiago Roux Oliveira; Liu Hsu (VSS, 2024)

High-Gain Functional Observer Based Output-Feedback Sliding-Mode Control with Chattering Avoidance*. - Liu Hsu; José Paulo V. S. Cunha; Tiago Roux Oliveira; Eduardo V. L. Nunes; Alessandro Jacoud Peixoto; Fernando C. Lizarralde; Ramon R. Costa (VSS, 2024)

Global Output-Feedback Extremum Seeking Control with Source Seeking Experiments. - Nerito Oliveira Aminde; Tiago Roux Oliveira; Liu Hsu (CoRR, 2024)

Arbitrarily Fast Tracking Multivariable Least-squares MRAC. - Liu Hsu; Ramon R. Costa; Fernando C. Lizarralde; Alessandro Jacoud Peixoto (CoRR, 2024)

Nyquist criterion for chattering avoidance and global stability in observer-based sliding-mode control with parasitics. - Liu Hsu; José Paulo V. S. Cunha; Ramon R. Costa; Fernando C. Lizarralde; Eduardo Vieira Leão Nunes; Tiago Roux Oliveira; Alessandro Jacoud Peixoto (J. Frankl. Inst., 2024)

LMI-Based Robust Multivariable Super-Twisting Algorithm Design. - José Claudio Geromel; Eduardo Vieira Leão Nunes; Liu Hsu (IEEE Trans. Autom. Control., 2024)

On Multivariable Super-Twisting Algorithm Reaching Time Assessment. - José Claudio Geromel; Liu Hsu; Eduardo V. L. Nunes (IEEE Trans. Autom. Control., 2024)

Event-Triggered and Periodic Event-Triggered Extremum Seeking Control. - Victor Hugo Pereira Rodrigues; Tiago Roux Oliveira; Liu Hsu; Mamadou Diagne; Miroslav Krstic (Autom., 2025)

Multivariable Generalized Super-Twisting Algorithm Robust Control of Linear Time-Invariant Systems. - José Claudio Geromel; Eduardo V. L. Nunes; Liu Hsu (CoRR, 2025)

Optimal and Robust Multivariable Reaching Time Sliding Mode Control Design. - José Claudio Geromel; Liu Hsu; Eduardo V. L. Nunes (CoRR, 2025)

Sliding Mode Control for Uncertain Systems with Time-Varying Delays via Predictor Feedback and Super-Twisting Observer. - Hardy L. C. P. Pinto; Tiago Roux Oliveira; Liu Hsu (CoRR, 2025)