Bilateral teleoperation over the internet: the time varying delay problem. - Nikhil Chopra; Mark W. Spong; Sandra Hirche; Martin Buss (ACC, 2003)

Theory and experiments in bilateral teleoperation over the Internet. - Paul Berestesky; Nikhil Chopra; Mark W. Spong (CCA, 2004)

On position tracking in bilateral teleoperation. - Nikhil Chopra; Mark W. Spong; Romeo Ortega; Nikita E. Barabanov (ACC, 2004)

Adaptive coordination control of bilateral teleoperators with time delay. - Nikhil Chopra; Mark W. Spong (CDC, 2004)

Discrete Time Passivity in Bilateral Teleoperation over the Internet. - Paul Berestesky; Nikhil Chopra; Mark W. Spong (ICRA, 2004)

On Synchronization of Kuramoto Oscillators. - Nikhil Chopra; Mark W. Spong (CDC/ECC, 2005)

Output Synchronization of Nonlinear Systems with Time Delay in Communication. - Nikhil Chopra; Mark W. Spong (CDC, 2006)

On tracking performance in bilateral teleoperation. - Nikhil Chopra; Mark W. Spong; Romeo Ortega; Nikita E. Barabanov (IEEE Trans. Robotics, 2006)

Convergence Analysis of Bilateral Teleoperation with Constant Human Input. - Rogelio Lozano; Nikhil Chopra; Mark W. Spong (ACC, 2007)

Delay-independent stability for interconnected nonlinear systems with finite L2 gain. - Nikhil Chopra; Mark W. Spong (CDC, 2007)

Adaptive Synchronization of Bilateral Teleoperators with Time Delay. - Nikhil Chopra; Mark W. Spong (Advances in Telerobotics, 2007)

Output Synchronization of Nonlinear Systems with Relative Degree One. - Nikhil Chopra; Mark W. Spong (Recent Advances in Learning and Control, 2008)

On synchronization and collision avoidance for mechanical systems. - Nikhil Chopra; Dusan M. Stipanovic; Mark W. Spong (ACC, 2008)

Passivity results for interconnected systems with time delay. - Nikhil Chopra (CDC, 2008)

Controllability and observability of leader-based multi-agent systems. - Rogelio Lozano; Mark W. Spong; Jose Alfredo Guerrero Mata; Nikhil Chopra (CDC, 2008)

Synchronization of bilateral teleoperators with time delay. - Nikhil Chopra; Mark W. Spong; Rogelio Lozano (Autom., 2008)

Bilateral Teleoperation Over Unreliable Communication Networks. - Nikhil Chopra; Paul Berestesky; Mark W. Spong (IEEE Trans. Control. Syst. Technol., 2008)

Control of robotic manipulators with input/output delays. - Nikhil Chopra (ACC, 2009)

On Exponential Synchronization of Kuramoto Oscillators. - Nikhil Chopra; Mark W. Spong (IEEE Trans. Autom. Control., 2009)

On ultimate boundedness of delay synchronization algorithms for semi-passive systems. - Nikhil Chopra (Allerton, 2010)

Robust controlled synchronization of interconnected robotic systems. - Yen-Chen Liu; Nikhil Chopra (ACC, 2010)

Synchronization of networked robotic systems on strongly connected graphs. - Yen-Chen Liu; Nikhil Chopra (CDC, 2010)

Control of robotic manipulators under time-varying sensing-control delays. - Nikhil Chopra (ICRA, 2010)

Control of Robotic Manipulators with Input-Output Delays: An Experimental Verification. - Yen-Chen Liu; Nikhil Chopra (ISER, 2010)

On decentralized connectivity maintenance for mobile robotic systems. - Lorenzo Sabattini; Nikhil Chopra; Cristian Secchi (CDC/ECC, 2011)

On event triggered trajectory tracking for control affine nonlinear systems. - Pavankumar Tallapragada; Nikhil Chopra (CDC/ECC, 2011)

Semi-autonomous teleoperation in task space with redundant slave robot under communication delays. - Yen-Chen Liu; Nikhil Chopra (IROS, 2011)

Distributed control of multi-robot systems with global connectivity maintenance. - Lorenzo Sabattini; Nikhil Chopra; Cristian Secchi (IROS, 2011)

én Co-design of event trigger and quantizer for emulation based control. - Pavankumar Tallapragada; Nikhil Chopra (ACC, 2012)

Event-triggered dynamic output feedback control for LTI systems. - Pavankumar Tallapragada; Nikhil Chopra (CDC, 2012)

Decentralized connectivity maintenance for networked Lagrangian dynamical systems. - Lorenzo Sabattini; Cristian Secchi; Nikhil Chopra (ICRA, 2012)

Lyapunov Based Sampling for Adaptive Tracking Control in Robot Manipulators: An Experimental Comparison. - Pavankumar Tallapragada; Nikhil Chopra (ISER, 2012)

Enhanced Connectivity Maintenance for Multi-Robot Systems. - Lorenzo Sabattini; Andrea Gasparri; Cristian Secchi; Nikhil Chopra (SyRoCo, 2012)

Output Synchronization on Strongly Connected Graphs. - Nikhil Chopra (IEEE Trans. Autom. Control., 2012)

Controlled Synchronization of Heterogeneous Robotic Manipulators in the Task Space. - Yen-Chen Liu; Nikhil Chopra (IEEE Trans. Robotics, 2012)

Control of Robotic Manipulators Under Input/Output Communication Delays: Theory and Experiments. - Yen-Chen Liu; Nikhil Chopra (IEEE Trans. Robotics, 2012)

Decentralized event-triggering for control of LTI systems. - Pavankumar Tallapragada; Nikhil Chopra (CCA, 2013)

Event-triggered dynamic output feedback control of LTI systems over Sensor-Controller-Actuator Networks. - Pavankumar Tallapragada; Nikhil Chopra (CDC, 2013)

Position regulation of flexible-joint robots with input/output constant delays. - Yen-Chen Liu; Nikhil Chopra (IROS, 2013)

Decentralized control for maintenance of strong connectivity for directed graphs. - Lorenzo Sabattini; Cristian Secchi; Nikhil Chopra (MED, 2013)

Control of semi-autonomous teleoperation system with time delays. - Yen-Chen Liu; Nikhil Chopra (Autom., 2013)

Decentralized connectivity maintenance for cooperative control of mobile robotic systems. - Lorenzo Sabattini; Nikhil Chopra; Cristian Secchi (Int. J. Robotics Res., 2013)

On Event Triggered Tracking for Nonlinear Systems. - Pavankumar Tallapragada; Nikhil Chopra (IEEE Trans. Autom. Control., 2013)

Distributed Control of Multirobot Systems With Global Connectivity Maintenance. - Lorenzo Sabattini; Cristian Secchi; Nikhil Chopra; Andrea Gasparri (IEEE Trans. Robotics, 2013)

On stability and regulation performance for flexible-joint robots with input/output communication delays. - Yen-Chen Liu; Nikhil Chopra (Autom., 2014)

Decentralized Event-Triggering for Control of Nonlinear Systems. - Pavankumar Tallapragada; Nikhil Chopra (IEEE Trans. Autom. Control., 2014)

Gravity-Compensation-Driven Position Regulation for Robotic Systems Under Input/Output Delays. - Yen-Chen Liu; Nikhil Chopra (IEEE Trans. Control. Syst. Technol., 2014)

Passivity-based bilateral human-swarm-interactions for cooperative robotic networks and human passivity analysis. - Takeshi Hatanaka; Nikhil Chopra; Masayuki Fujita (CDC, 2015)

Passivity-based control of robots: Historical perspective and contemporary issues. - Takeshi Hatanaka; Nikhil Chopra; Mark W. Spong (CDC, 2015)

Decentralized Estimation and Control for Preserving the Strong Connectivity of Directed Graphs. - Lorenzo Sabattini; Cristian Secchi; Nikhil Chopra (IEEE Trans. Cybern., 2015)

On content modification attacks in bilateral teleoperation systems. - Yimeng Dong; Nirupam Gupta; Nikhil Chopra (ACC, 2016)

Confidentiality in distributed average information consensus. - Nirupam Gupta; Nikhil Chopra (CDC, 2016)

Passivity-based control of human-robotic networks with inter-robot communication delays and experimental verification. - Junya Yamauchi; Made Widhi Surya Atman; Takeshi Hatanaka; Nikhil Chopra; Masayuki Fujita (AIM, 2017)

Optimal actuator placement for linear systems with limited number of actuators. - Prasad Vilas Chanekar; Nikhil Chopra; Shapour Azarm (ACC, 2017)

Robustness of distributive double-integrator consensus to loss of graph connectivity. - Nirupam Gupta; Yimeng Dong; Nikhil Chopra (ACC, 2017)

Optimal structured static output feedback design using generalized benders decomposition. - Prasad Vilas Chanekar; Nikhil Chopra; Shapour Azarm (CDC, 2017)

Model-Based Encryption: Privacy of States in Networked Control Systems. - Nirupam Gupta; Nikhil Chopra (Allerton, 2018)

Co-design of linear systems using Generalized Benders Decomposition. - Prasad Vilas Chanekar; Nikhil Chopra; Shapour Azarm (Autom., 2018)

Information-Theoretic Privacy in Distributed Average Consensus. - Nirupam Gupta; Jonathan Katz; Nikhil Chopra (CoRR, 2018)

Motion synchronization for semi-autonomous robotic swarm with a passivity-short human operator. - Made Widhi Surya Atman; Takeshi Hatanaka; Zhihua Qu; Nikhil Chopra; Junya Yamauchi; Masayuki Fujita (Int. J. Intell. Robotics Appl., 2018)

Passivity-Based Distributed Optimization With Communication Delays Using PI Consensus Algorithm. - Takeshi Hatanaka; Nikhil Chopra; Takayuki Ishizaki; Na Li 002 (IEEE Trans. Autom. Control., 2018)

Statistical Privacy in Distributed Average Consensus on Bounded Real Inputs. - Nirupam Gupta; Jonathan Katz; Nikhil Chopra (ACC, 2019)

Robotic Parasitic Array Optimization in Outdoor Environments. - Jeffrey N. Twigg; Fikadu T. Dagefu; Nikhil Chopra; Brian M. Sadler (SSRR, 2019)

Privacy of Agents' Costs in Peer-to-Peer Distributed Optimization. - Nirupam Gupta; Nikhil Chopra (CoRR, 2019)

Passivity-Based Bilateral Tele-Driving System With Parametric Uncertainty and Communication Delays. - Yimeng Dong; Nikhil Chopra (IEEE Control. Syst. Lett., 2019)

Iterative Pre-Conditioning to Expedite the Gradient-Descent Method. - Kushal Chakrabarti; Nirupam Gupta; Nikhil Chopra (ACC, 2020)

Bilateral Teleoperation of Soft Robots under Piecewise Constant Curvature Hypothesis: An Experimental Investigation. - Lasitha Weerakoon; Nikhil Chopra (ACC, 2020)

Iterative Pre-Conditioning for Expediting the Gradient-Descent Method: The Distributed Linear Least-Squares Problem. - Kushal Chakrabarti; Nirupam Gupta; Nikhil Chopra (CoRR, 2020)

Accelerating Distributed SGD for Linear Linear Regression using Iterative Pre-Conditioning. - Kushal Chakrabarti; Nirupam Gupta; Nikhil Chopra (CoRR, 2020)

Adaptive Tracking Control of Soft Robots using Integrated Sensing Skin and Recurrent Neural Networks. - Lasitha Weerakoon; Zepeng Ye; Rahul Subramonian Bama; Elisabeth Smela; Miao Yu 007; Nikhil Chopra (CoRR, 2020)

Communication Maintenance of Robotic Parasitic Antenna Arrays. - Jeffrey N. Twigg; Nikhil Chopra; Brian M. Sadler (IEEE Robotics Autom. Lett., 2020)

False Data Injection Attacks in Bilateral Teleoperation Systems. - Yimeng Dong; Nirupam Gupta; Nikhil Chopra (IEEE Trans. Control. Syst. Technol., 2020)

Generalized AdaGrad (G-AdaGrad) and Adam: A State-Space Perspective. - Kushal Chakrabarti; Nikhil Chopra (CDC, 2021)

Swing up Control of a Soft Inverted Pendulum with Revolute Base. - Lasitha Weerakoon; Nikhil Chopra (CDC, 2021)

Adaptive Tracking Control of Soft Robots Using Integrated Sensing Skins and Recurrent Neural Networks. - Lasitha Weerakoon; Zepeng Ye; Rahul Subramonian Bama; Elisabeth Smela; Miao Yu 007; Nikhil Chopra (ICRA, 2021)

Accelerating Distributed SGD for Linear Regression using Iterative Pre-Conditioning. - Kushal Chakrabarti; Nirupam Gupta; Nikhil Chopra (L4DC, 2021)

On Accelerating Distributed Convex Optimizations. - Kushal Chakrabarti; Nirupam Gupta; Nikhil Chopra (CoRR, 2021)

Robustness of Iteratively Pre-Conditioned Gradient-Descent Method: The Case of Distributed Linear Regression Problem. - Kushal Chakrabarti; Nirupam Gupta; Nikhil Chopra (IEEE Control. Syst. Lett., 2021)

Preserving Statistical Privacy in Distributed Optimization. - Nirupam Gupta; Shripad Gade; Nikhil Chopra; Nitin H. Vaidya (IEEE Control. Syst. Lett., 2021)

Fast Distributed Beamforming without Receiver Feedback. - Kushal Chakrabarti; Amrit S. Bedi; Fikadu T. Dagefu; Jeffrey N. Twigg; Nikhil Chopra (IEEECONF, 2022)

Analysis and Synthesis of Adaptive Gradient Algorithms in Machine Learning: The Case of AdaBound and MAdamSSM. - Kushal Chakrabarti; Nikhil Chopra (CDC, 2022)

Passivity-Based Task Space Control of Hybrid Rigid-Soft (HyRiSo) Robots with Parametric Uncertainty. - Lasitha Weerakoon; Nikhil Chopra (CDC, 2022)

Iterative pre-conditioning for expediting the distributed gradient-descent method: The case of linear least-squares problem. - Kushal Chakrabarti; Nirupam Gupta; Nikhil Chopra (Autom., 2022)

Co-Design of Lipschitz Nonlinear Systems. - Prasad Vilas Chanekar; Nikhil Chopra (CoRR, 2022)

A Control Theoretic Framework for Adaptive Gradient Optimizers in Machine Learning. - Kushal Chakrabarti; Nikhil Chopra (CoRR, 2022)

Cartographer_glass: 2D Graph SLAM Framework using LiDAR for Glass Environments. - Lasitha Weerakoon; Gurtajbir Singh Herr; Jasmine Blunt; Miao Yu 007; Nikhil Chopra (CoRR, 2022)

Robotic Parasitic Array Control for Increased RSS in Non-Line-of-Sight. - Jeffrey N. Twigg; Fikadu T. Dagefu; Nikhil Chopra; Brian M. Sadler (IEEE Robotics Autom. Lett., 2022)

On Preconditioning of Decentralized Gradient-Descent When Solving a System of Linear Equations. - Kushal Chakrabarti; Nirupam Gupta; Nikhil Chopra (IEEE Trans. Control. Netw. Syst., 2022)

IPG Observer: A Newton-Type Observer Robust to Measurement Noise. - Kushal Chakrabarti; Nikhil Chopra (ACC, 2023)

Iteratively Preconditioned Gradient-Descent Approach for Moving Horizon Estimation Problems. - Tianchen Liu; Kushal Chakrabarti; Nikhil Chopra (CDC, 2023)

Quantum Circuit Optimization through Iteratively Pre-Conditioned Gradient Descent. - Dhruv Srinivasan; Kushal Chakrabarti; Nikhil Chopra; Avik Dutt (QCE, 2023)

Special issue on control technology for networked and distributed robotics. - Masaaki Nagahara; Kai Cai; Debasish Chatterjee; Nikhil Chopra; Takeshi Hatanaka; Yutaka Hori; Hideaki Ishii; Daniel E. Quevedo; Michel A. Reniers (Adv. Robotics, 2023)

Special issue on control technology for networked and distributed robotics (Part II). - Masaaki Nagahara; Kai Cai; Debasish Chatterjee; Nikhil Chopra; Takeshi Hatanaka; Yutaka Hori; Hideaki Ishii; Daniel E. Quevedo; Michel A. Reniers (Adv. Robotics, 2023)

Variant Predictor-Corrector Method for Linear Predictive Control Using Modified Uzawa Algorithm. - Tianchen Liu; Kushal Chakrabarti; Nikhil Chopra (CDC, 2024)

Accurate Registration of Transparent Objects in 2D LiDAR SLAM. - Gurtajbir Singh Herr; Lasitha Weerakoon; Nikhil Chopra (ERF (1), 2024)

Inverse Kinematics for Robotic Manipulators Using Iterative Preconditioned Optimization Algorithms. - Tianchen Liu; Lasitha Weerakoon; Nikhil Chopra (ERF (1), 2024)

UIVNAV: Underwater Information-driven Vision-based Navigation via Imitation Learning. - Xiaomin Lin; Nare Karapetyan; Kaustubh Joshi 002; Tianchen Liu; Nikhil Chopra; Miao Yu 007; Pratap Tokekar; Yiannis Aloimonos (ICRA, 2024)

Reinforcement Learning Driven Cooperative Ball Balance in Rigidly Coupled Drones. - Shraddha Barawkar; Nikhil Chopra (CoRR, 2024)

3D Water Quality Mapping using Invariant Extended Kalman Filtering for Underwater Robot Localization. - Kaustubh Joshi 002; Tianchen Liu; Alan Williams; Matthew Gray; Xiaomin Lin; Nikhil Chopra (CoRR, 2024)

On Convergence of the Iteratively Preconditioned Gradient-Descent (IPG) Observer. - Kushal Chakrabarti; Nikhil Chopra (IEEE Control. Syst. Lett., 2024)

Novel Iteratively Preconditioned Gradient-Descent Algorithm via Successive Over-Relaxation Formulation. - Tianchen Liu; Kushal Chakrabarti; Nikhil Chopra (IEEE Control. Syst. Lett., 2024)

A control theoretic framework for adaptive gradient optimizers. - Kushal Chakrabarti; Nikhil Chopra (Autom., 2024)

Cascade IPG Observer for Underwater Robot State Estimation. - Kaustubh Joshi 002; Tianchen Liu; Nikhil Chopra (CoRR, 2025)