Commutator-Driven Stability Bounds for Periodic Switching.

Nikhil Chopra https://orcid.org/0000-0002-5365-293X https://www.wikidata.org/entity/Q93367777

Debanjan Mallik Nikhil Chopra Commutator-Driven Stability Bounds for Periodic Switching. 2026 1585-1590 10 IEEE Control. Syst. Lett. https://doi.org/10.1109/LCSYS.2026.3708744 db/journals/csysl/csysl10.html#MallikC26 streams/journals/csysl

Kaustubh Joshi 0002 Tianchen Liu Nikhil Chopra Cascade IPG Observer for Underwater Robot State Estimation. 5313-5319 2025 ICRA https://doi.org/10.1109/ICRA55743.2025.11128435 conf/icra/2025 db/conf/icra/icra2025.html#JoshiLC25 streams/conf/icra Alex Beyer Jeffrey N. Twigg Fikadu T. Dagefu Nikhil Chopra Accelerating Distributed Beamforming with the Frank-Wolfe Algorithm. 1-5 2025 VTC2025-Spring https://doi.org/10.1109/VTC2025-Spring65109.2025.11174353 conf/vtc/2025s db/conf/vtc/vtc2025s.html#BeyerTDC25 streams/conf/vtc

Kaustubh Joshi 0002 Tianchen Liu Nikhil Chopra Cascade IPG Observer for Underwater Robot State Estimation. 2025 April abs/2504.15235 CoRR https://doi.org/10.48550/arXiv.2504.15235 db/journals/corr/corr2504.html#abs-2504-15235 streams/journals/corr

Zhenqi Wu Abhinav Modi Angelos Mavrogiannis Kaustubh Joshi 0002 Nikhil Chopra Yiannis Aloimonos Nare Karapetyan Ioannis M. Rekleitis Xiaomin Lin 0002 DREAM: Domain-aware Reasoning for Efficient Autonomous Underwater Monitoring. 2025 September abs/2509.13666 CoRR https://doi.org/10.48550/arXiv.2509.13666 db/journals/corr/corr2509.html#abs-2509-13666 streams/journals/corr

Kushal Chakrabarti Nikhil Chopra A control theoretic framework for adaptive gradient optimizers. 111466 2024 February 160 Autom. https://doi.org/10.1016/j.automatica.2023.111466 db/journals/automatica/automatica160.html#ChakrabartiC24

Kushal Chakrabarti Nikhil Chopra On Convergence of the Iteratively Preconditioned Gradient-Descent (IPG) Observer. 1715-1720 2024 8 IEEE Control. Syst. Lett. https://doi.org/10.1109/LCSYS.2024.3416337 db/journals/csysl/csysl8.html#ChakrabartiC24

Tianchen Liu Kushal Chakrabarti Nikhil Chopra Novel Iteratively Preconditioned Gradient-Descent Algorithm via Successive Over-Relaxation Formulation. 3105-3110 2024 8 IEEE Control. Syst. Lett. https://doi.org/10.1109/LCSYS.2024.3521673 db/journals/csysl/csysl8.html#LiuCC24 streams/journals/csysl

Tianchen Liu Kushal Chakrabarti Nikhil Chopra Variant Predictor-Corrector Method for Linear Predictive Control Using Modified Uzawa Algorithm. 273-278 2024 CDC https://doi.org/10.1109/CDC56724.2024.10885911 conf/cdc/2024 db/conf/cdc/cdc2024.html#LiuCC24 Tianchen Liu Lasitha Weerakoon Nikhil Chopra Inverse Kinematics for Robotic Manipulators Using Iterative Preconditioned Optimization Algorithms. 170-174 2024 ERF (1) https://doi.org/10.1007/978-3-031-76424-0_31 conf/erf/2024-1 db/conf/erf/erf2024-1.html#LiuWC24 Gurtajbir Singh Herr Lasitha Weerakoon Nikhil Chopra Accurate Registration of Transparent Objects in 2D LiDAR SLAM. 175-179 2024 ERF (1) https://doi.org/10.1007/978-3-031-76424-0_32 conf/erf/2024-1 db/conf/erf/erf2024-1.html#HerrWC24 Xiaomin Lin 0002 Nare Karapetyan Kaustubh Joshi 0002 Tianchen Liu Nikhil Chopra Miao Yu 0007 Pratap Tokekar Yiannis Aloimonos UIVNAV: Underwater Information-driven Vision-based Navigation via Imitation Learning. 5250-5256 2024 ICRA https://doi.org/10.1109/ICRA57147.2024.10611203 conf/icra/2024 db/conf/icra/icra2024.html#LinKJLC0TA24

Shraddha Barawkar Nikhil Chopra Reinforcement Learning Driven Cooperative Ball Balance in Rigidly Coupled Drones. 2024 abs/2404.19070 CoRR https://doi.org/10.48550/arXiv.2404.19070 db/journals/corr/corr2404.html#abs-2404-19070

Kushal Chakrabarti Nikhil Chopra On Convergence of the Iteratively Preconditioned Gradient-Descent (IPG) Observer. 2024 abs/2405.09137 CoRR https://doi.org/10.48550/arXiv.2405.09137 db/journals/corr/corr2405.html#abs-2405-09137

Kaustubh Joshi 0002 Tianchen Liu Alan Williams Matthew Gray Xiaomin Lin 0002 Nikhil Chopra 3D Water Quality Mapping using Invariant Extended Kalman Filtering for Underwater Robot Localization. 2024 abs/2409.11578 CoRR https://doi.org/10.48550/arXiv.2409.11578 db/journals/corr/corr2409.html#abs-2409-11578 streams/journals/corr

Masaaki Nagahara Kai Cai 0002 Debasish Chatterjee Nikhil Chopra Takeshi Hatanaka Yutaka Hori Hideaki Ishii Daniel E. Quevedo Michel A. Reniers Special issue on control technology for networked and distributed robotics. 1 2023 January 37 Adv. Robotics 1-2 https://doi.org/10.1080/01691864.2022.2156058 db/journals/ar/ar37.html#NagaharaCCCHHIQR23

Masaaki Nagahara Kai Cai 0002 Debasish Chatterjee Nikhil Chopra Takeshi Hatanaka Yutaka Hori Hideaki Ishii Daniel E. Quevedo Michel A. Reniers Special issue on control technology for networked and distributed robotics (Part II). 155 2023 February 37 Adv. Robotics 3 https://doi.org/10.1080/01691864.2023.2168316 db/journals/ar/ar37.html#NagaharaCCCHHIQR23a

Kushal Chakrabarti Nikhil Chopra IPG Observer: A Newton-Type Observer Robust to Measurement Noise. 3069-3074 2023 ACC https://doi.org/10.23919/ACC55779.2023.10156606 conf/amcc/2023 db/conf/amcc/acc2023.html#ChakrabartiC23 Tianchen Liu Kushal Chakrabarti Nikhil Chopra Iteratively Preconditioned Gradient-Descent Approach for Moving Horizon Estimation Problems. 8457-8462 2023 CDC https://doi.org/10.1109/CDC49753.2023.10384210 conf/cdc/2023 db/conf/cdc/cdc2023.html#LiuCC23 Dhruv Srinivasan Kushal Chakrabarti Nikhil Chopra Avik Dutt Quantum Circuit Optimization through Iteratively Pre-Conditioned Gradient Descent. 443-449 2023 QCE https://doi.org/10.1109/QCE57702.2023.00057 conf/qce/2023 db/conf/qce/qce2023.html#SrinivasanCCD23

Tianchen Liu Kushal Chakrabarti Nikhil Chopra Iteratively Preconditioned Gradient-Descent Approach for Moving Horizon Estimation Problems. 2023 abs/2306.13194 CoRR https://doi.org/10.48550/arXiv.2306.13194 db/journals/corr/corr2306.html#abs-2306-13194

Xiaomin Lin 0002 Nare Karapetyan Kaustubh Joshi 0002 Tianchen Liu Nikhil Chopra Miao Yu 0007 Pratap Tokekar Yiannis Aloimonos UIVNAV: Underwater Information-driven Vision-based Navigation via Imitation Learning. 2023 abs/2309.08806 CoRR https://doi.org/10.48550/arXiv.2309.08806 db/journals/corr/corr2309.html#abs-2309-08806

Kushal Chakrabarti Nirupam Gupta Nikhil Chopra Iterative pre-conditioning for expediting the distributed gradient-descent method: The case of linear least-squares problem. 110095 2022 137 Autom. https://doi.org/10.1016/j.automatica.2021.110095 db/journals/automatica/automatica137.html#ChakrabartiGC22

Jeffrey N. Twigg Fikadu T. Dagefu Nikhil Chopra Brian M. Sadler Robotic Parasitic Array Control for Increased RSS in Non-Line-of-Sight. 9167-9174 2022 7 IEEE Robotics Autom. Lett. 4 https://doi.org/10.1109/LRA.2022.3190644 db/journals/ral/ral7.html#TwiggDCS22

Kushal Chakrabarti Nirupam Gupta Nikhil Chopra On Preconditioning of Decentralized Gradient-Descent When Solving a System of Linear Equations. 811-822 2022 9 IEEE Trans. Control. Netw. Syst. 2 https://doi.org/10.1109/TCNS.2022.3165089 db/journals/tcns/tcns9.html#ChakrabartiGC22

Kushal Chakrabarti Amrit S. Bedi Fikadu T. Dagefu Jeffrey N. Twigg Nikhil Chopra Fast Distributed Beamforming without Receiver Feedback. 1408-1412 2022 IEEECONF https://doi.org/10.1109/IEEECONF56349.2022.10051925 conf/acssc/2022 db/conf/acssc/acssc2022.html#ChakrabartiBDTC22 Lasitha Weerakoon Nikhil Chopra Passivity-Based Task Space Control of Hybrid Rigid-Soft (HyRiSo) Robots with Parametric Uncertainty. 771-776 2022 CDC https://doi.org/10.1109/CDC51059.2022.9992538 conf/cdc/2022 db/conf/cdc/cdc2022.html#WeerakoonC22 Kushal Chakrabarti Nikhil Chopra Analysis and Synthesis of Adaptive Gradient Algorithms in Machine Learning: The Case of AdaBound and MAdamSSM. 795-800 2022 CDC https://doi.org/10.1109/CDC51059.2022.9992512 conf/cdc/2022 db/conf/cdc/cdc2022.html#ChakrabartiC22

Prasad Vilas Chanekar Nikhil Chopra Co-Design of Lipschitz Nonlinear Systems. 2022 abs/2201.03886 CoRR https://arxiv.org/abs/2201.03886 db/journals/corr/corr2201.html#abs-2201-03886

Kushal Chakrabarti Nikhil Chopra A Control Theoretic Framework for Adaptive Gradient Optimizers in Machine Learning. 2022 abs/2206.02034 CoRR https://doi.org/10.48550/arXiv.2206.02034 db/journals/corr/corr2206.html#abs-2206-02034

Lasitha Weerakoon Gurtajbir Singh Herr Jasmine Blunt Miao Yu 0007 Nikhil Chopra Cartographer_glass: 2D Graph SLAM Framework using LiDAR for Glass Environments. 2022 abs/2212.08633 CoRR https://doi.org/10.48550/arXiv.2212.08633 db/journals/corr/corr2212.html#abs-2212-08633

Nirupam Gupta Shripad Gade Nikhil Chopra Nitin H. Vaidya Preserving Statistical Privacy in Distributed Optimization. 779-784 2021 5 IEEE Control. Syst. Lett. 3 https://doi.org/10.1109/LCSYS.2020.3005766 db/journals/csysl/csysl5.html#GuptaGCV21

Kushal Chakrabarti Nirupam Gupta Nikhil Chopra Robustness of Iteratively Pre-Conditioned Gradient-Descent Method: The Case of Distributed Linear Regression Problem. 2180-2185 2021 5 IEEE Control. Syst. Lett. 6 https://doi.org/10.1109/LCSYS.2020.3045533 db/journals/csysl/csysl5.html#ChakrabartiGC21

Kushal Chakrabarti Nirupam Gupta Nikhil Chopra Robustness of Iteratively Pre-Conditioned Gradient-Descent Method: The Case of Distributed Linear Regression Problem. 2248-2253 2021 ACC https://doi.org/10.23919/ACC50511.2021.9482711 conf/amcc/2021 db/conf/amcc/amcc2021.html#ChakrabartiGC21 Lasitha Weerakoon Nikhil Chopra Swing up Control of a Soft Inverted Pendulum with Revolute Base. 685-690 2021 CDC https://doi.org/10.1109/CDC45484.2021.9683691 conf/cdc/2021 db/conf/cdc/cdc2021.html#WeerakoonC21 Kushal Chakrabarti Nikhil Chopra Generalized AdaGrad (G-AdaGrad) and Adam: A State-Space Perspective. 1496-1501 2021 CDC https://doi.org/10.1109/CDC45484.2021.9682994 conf/cdc/2021 db/conf/cdc/cdc2021.html#ChakrabartiC21 Lasitha Weerakoon Zepeng Ye Rahul Subramonian Bama Elisabeth Smela Miao Yu 0007 Nikhil Chopra Adaptive Tracking Control of Soft Robots Using Integrated Sensing Skins and Recurrent Neural Networks. 12170-12176 2021 ICRA https://doi.org/10.1109/ICRA48506.2021.9561447 conf/icra/2021 db/conf/icra/icra2021.html#WeerakoonYBSYC21 Kushal Chakrabarti Nirupam Gupta Nikhil Chopra Accelerating Distributed SGD for Linear Regression using Iterative Pre-Conditioning. 447-458 2021 L4DC http://proceedings.mlr.press/v144/chakrabarti21a.html conf/l4dc/2021 db/conf/l4dc/l4dc2021.html#ChakrabartiGC21

Kushal Chakrabarti Nirupam Gupta Nikhil Chopra Robustness of Iteratively Pre-Conditioned Gradient-Descent Method: The Case of Distributed Linear Regression Problem. 2021 abs/2101.10967 CoRR https://arxiv.org/abs/2101.10967 db/journals/corr/corr2101.html#abs-2101-10967

Kushal Chakrabarti Nikhil Chopra Generalized AdaGrad (G-AdaGrad) and Adam: A State-Space Perspective. 2021 abs/2106.00092 CoRR https://arxiv.org/abs/2106.00092 db/journals/corr/corr2106.html#abs-2106-00092

Kushal Chakrabarti Nirupam Gupta Nikhil Chopra On Accelerating Distributed Convex Optimizations. 2021 abs/2108.08670 CoRR https://arxiv.org/abs/2108.08670 db/journals/corr/corr2108.html#abs-2108-08670

Jeffrey N. Twigg Nikhil Chopra Brian M. Sadler Communication Maintenance of Robotic Parasitic Antenna Arrays. 6475-6482 2020 5 IEEE Robotics Autom. Lett. 4 https://doi.org/10.1109/LRA.2020.3013931 db/journals/ral/ral5.html#TwiggCS20

Yimeng Dong Nirupam Gupta Nikhil Chopra False Data Injection Attacks in Bilateral Teleoperation Systems. 1168-1176 2020 28 IEEE Trans. Control. Syst. Technol. 3 https://doi.org/10.1109/TCST.2019.2903446 db/journals/tcst/tcst28.html#DongGC20

Lasitha Weerakoon Nikhil Chopra Bilateral Teleoperation of Soft Robots under Piecewise Constant Curvature Hypothesis: An Experimental Investigation. 2124-2129 2020 ACC https://doi.org/10.23919/ACC45564.2020.9147323 conf/amcc/2020 db/conf/amcc/amcc2020.html#WeerakoonC20 Kushal Chakrabarti Nirupam Gupta Nikhil Chopra Iterative Pre-Conditioning to Expedite the Gradient-Descent Method. 3977-3982 2020 ACC https://doi.org/10.23919/ACC45564.2020.9147603 conf/amcc/2020 db/conf/amcc/amcc2020.html#ChakrabartiGC20

Kushal Chakrabarti Nirupam Gupta Nikhil Chopra Iterative Pre-Conditioning to Expedite the Gradient-Descent Method. 2020 abs/2003.07180 CoRR https://arxiv.org/abs/2003.07180 db/journals/corr/corr2003.html#abs-2003-07180

Nirupam Gupta Shripad Gade Nikhil Chopra Nitin H. Vaidya Preserving Statistical Privacy in Distributed Optimization. 2020 abs/2004.01312 CoRR https://arxiv.org/abs/2004.01312 db/journals/corr/corr2004.html#abs-2004-01312

Kushal Chakrabarti Nirupam Gupta Nikhil Chopra Iterative Pre-Conditioning for Expediting the Gradient-Descent Method: The Distributed Linear Least-Squares Problem. 2020 abs/2008.02856 CoRR https://arxiv.org/abs/2008.02856 db/journals/corr/corr2008.html#abs-2008-02856

Kushal Chakrabarti Nirupam Gupta Nikhil Chopra Accelerating Distributed SGD for Linear Linear Regression using Iterative Pre-Conditioning. 2020 abs/2011.07595 CoRR https://arxiv.org/abs/2011.07595 db/journals/corr/corr2011.html#abs-2011-07595

Lasitha Weerakoon Zepeng Ye Rahul Subramonian Bama Elisabeth Smela Miao Yu 0007 Nikhil Chopra Adaptive Tracking Control of Soft Robots using Integrated Sensing Skin and Recurrent Neural Networks. 2020 abs/2011.08412 CoRR https://arxiv.org/abs/2011.08412 db/journals/corr/corr2011.html#abs-2011-08412

Yimeng Dong Nikhil Chopra Passivity-Based Bilateral Tele-Driving System With Parametric Uncertainty and Communication Delays. 350-355 2019 3 IEEE Control. Syst. Lett. 2 https://doi.org/10.1109/LCSYS.2018.2879952 https://www.wikidata.org/entity/Q128971950 db/journals/csysl/csysl3.html#DongC19

Nirupam Gupta Jonathan Katz Nikhil Chopra Statistical Privacy in Distributed Average Consensus on Bounded Real Inputs. 1836-1841 2019 ACC https://doi.org/10.23919/ACC.2019.8814608 conf/amcc/2019 db/conf/amcc/acc2019.html#GuptaKC19 Jeffrey N. Twigg Fikadu T. Dagefu Nikhil Chopra Brian M. Sadler Robotic Parasitic Array Optimization in Outdoor Environments. 1-8 2019 SSRR https://doi.org/10.1109/SSRR.2019.8848974 conf/ssrr/2019 db/conf/ssrr/ssrr2019.html#TwiggDCS19

Nirupam Gupta Jonathan Katz Nikhil Chopra Statistical Privacy in Distributed Average Consensus on Bounded Real Inputs. 2019 abs/1903.09315 CoRR http://arxiv.org/abs/1903.09315 db/journals/corr/corr1903.html#abs-1903-09315

Nirupam Gupta Nikhil Chopra Privacy of Agents' Costs in Peer-to-Peer Distributed Optimization. 2019 abs/1905.00733 CoRR http://arxiv.org/abs/1905.00733 db/journals/corr/corr1905.html#abs-1905-00733

Prasad Vilas Chanekar Nikhil Chopra Shapour Azarm Co-design of linear systems using Generalized Benders Decomposition. 180-193 2018 89 Autom. https://doi.org/10.1016/j.automatica.2017.12.009 db/journals/automatica/automatica89.html#ChanekarCA18

Made Widhi Surya Atman Takeshi Hatanaka Zhihua Qu Nikhil Chopra Junya Yamauchi Masayuki Fujita Motion synchronization for semi-autonomous robotic swarm with a passivity-short human operator. 235-251 2018 2 Int. J. Intell. Robotics Appl. 2 https://doi.org/10.1007/s41315-018-0056-8 https://www.wikidata.org/entity/Q129937383 db/journals/ijira/ijira2.html#AtmanHQCYF18

Takeshi Hatanaka Nikhil Chopra Takayuki Ishizaki Na Li 0002 Passivity-Based Distributed Optimization With Communication Delays Using PI Consensus Algorithm. 4421-4428 2018 63 IEEE Trans. Autom. Control. 12 https://doi.org/10.1109/TAC.2018.2823264 https://www.wikidata.org/entity/Q130017619 db/journals/tac/tac63.html#HatanakaCIL18

Nirupam Gupta Nikhil Chopra Model-Based Encryption: Privacy of States in Networked Control Systems. 242-248 2018 Allerton https://doi.org/10.1109/ALLERTON.2018.8635912 conf/allerton/2018 db/conf/allerton/allerton2018.html#GuptaC18

Nirupam Gupta Jonathan Katz Nikhil Chopra Information-Theoretic Privacy in Distributed Average Consensus. 2018 abs/1809.01794 CoRR http://arxiv.org/abs/1809.01794 db/journals/corr/corr1809.html#abs-1809-01794

Junya Yamauchi Made Widhi Surya Atman Takeshi Hatanaka Nikhil Chopra Masayuki Fujita Passivity-based control of human-robotic networks with inter-robot communication delays and experimental verification. 628-633 2017 AIM https://doi.org/10.1109/AIM.2017.8014087 conf/aimech/2017 db/conf/aimech/aim2017.html#YamauchiAHCF17 Prasad Vilas Chanekar Nikhil Chopra Shapour Azarm Optimal actuator placement for linear systems with limited number of actuators. 334-339 2017 ACC https://doi.org/10.23919/ACC.2017.7962975 conf/amcc/2017 db/conf/amcc/acc2017.html#ChanekarCA17 Nirupam Gupta Yimeng Dong Nikhil Chopra Robustness of distributive double-integrator consensus to loss of graph connectivity. 4516-4521 2017 ACC https://doi.org/10.23919/ACC.2017.7963651 conf/amcc/2017 db/conf/amcc/acc2017.html#GuptaDC17 Prasad Vilas Chanekar Nikhil Chopra Shapour Azarm Optimal structured static output feedback design using generalized benders decomposition. 4819-4824 2017 CDC https://doi.org/10.1109/CDC.2017.8264371 conf/cdc/2017 db/conf/cdc/cdc2017.html#ChanekarCA17

Junya Yamauchi Made Widhi Surya Atman Takeshi Hatanaka Nikhil Chopra Masayuki Fujita Passivity-Based Control of Human-Robotic Networks with Inter-Robot Communication Delays and Experimental Verification. 2017 abs/1702.05420 CoRR http://arxiv.org/abs/1702.05420 db/journals/corr/corr1702.html#YamauchiAHCF17

Yimeng Dong Nirupam Gupta Nikhil Chopra On content modification attacks in bilateral teleoperation systems. 316-321 2016 ACC https://doi.org/10.1109/ACC.2016.7524934 conf/amcc/2016 db/conf/amcc/acc2016.html#DongGC16 Nirupam Gupta Nikhil Chopra Confidentiality in distributed average information consensus. 6709-6714 2016 CDC https://doi.org/10.1109/CDC.2016.7799302 conf/cdc/2016 db/conf/cdc/cdc2016.html#GuptaC16

Takeshi Hatanaka Nikhil Chopra Takayuki Ishizaki Na Li 0002 Passivity-Based Distributed Optimization with Communication Delays Using PI Consensus Algorithm. 2016 abs/1609.04666 CoRR http://arxiv.org/abs/1609.04666 db/journals/corr/corr1609.html#HatanakaCIL16

Lorenzo Sabattini Cristian Secchi Nikhil Chopra Decentralized Estimation and Control for Preserving the Strong Connectivity of Directed Graphs. 2273-2286 2015 45 IEEE Trans. Cybern. 10 https://doi.org/10.1109/TCYB.2014.2369572 https://www.wikidata.org/entity/Q50996064 db/journals/tcyb/tcyb45.html#SabattiniSC15

Takeshi Hatanaka Nikhil Chopra Masayuki Fujita Passivity-based bilateral human-swarm-interactions for cooperative robotic networks and human passivity analysis. 1033-1039 2015 CDC https://doi.org/10.1109/CDC.2015.7402008 conf/cdc/2015 db/conf/cdc/cdc2015.html#HatanakaCF15 Takeshi Hatanaka Nikhil Chopra Mark W. Spong Passivity-based control of robots: Historical perspective and contemporary issues. 2450-2452 2015 CDC https://doi.org/10.1109/CDC.2015.7402575 conf/cdc/2015 db/conf/cdc/cdc2015.html#HatanakaCS15

Yen-Chen Liu Nikhil Chopra On stability and regulation performance for flexible-joint robots with input/output communication delays. 1698-1705 2014 50 Autom. 6 https://doi.org/10.1016/j.automatica.2014.04.022 db/journals/automatica/automatica50.html#LiuC14

Pavankumar Tallapragada Nikhil Chopra Decentralized Event-Triggering for Control of Nonlinear Systems. 3312-3324 2014 59 IEEE Trans. Autom. Control. 12 https://doi.org/10.1109/TAC.2014.2351931 db/journals/tac/tac59.html#TallapragadaC14

Yen-Chen Liu Nikhil Chopra Gravity-Compensation-Driven Position Regulation for Robotic Systems Under Input/Output Delays. 995-1005 2014 22 IEEE Trans. Control. Syst. Technol. 3 https://doi.org/10.1109/TCST.2013.2275746 db/journals/tcst/tcst22.html#LiuC14

Yen-Chen Liu Nikhil Chopra Control of semi-autonomous teleoperation system with time delays. 1553-1565 2013 49 Autom. 6 https://doi.org/10.1016/j.automatica.2013.02.009 db/journals/automatica/automatica49.html#LiuC13

Lorenzo Sabattini Nikhil Chopra Cristian Secchi Decentralized connectivity maintenance for cooperative control of mobile robotic systems. 1411-1423 2013 32 Int. J. Robotics Res. 12 https://doi.org/10.1177/0278364913499085 db/journals/ijrr/ijrr32.html#SabattiniCS13

Pavankumar Tallapragada Nikhil Chopra On Event Triggered Tracking for Nonlinear Systems. 2343-2348 2013 58 IEEE Trans. Autom. Control. 9 https://doi.org/10.1109/TAC.2013.2251794 db/journals/tac/tac58.html#TallapragadaC13

Lorenzo Sabattini Cristian Secchi Nikhil Chopra Andrea Gasparri Distributed Control of Multirobot Systems With Global Connectivity Maintenance. 1326-1332 2013 29 IEEE Trans. Robotics 5 https://doi.org/10.1109/TRO.2013.2267971 db/journals/trob/trob29.html#SabattiniSCG13

Pavankumar Tallapragada Nikhil Chopra Decentralized event-triggering for control of LTI systems. 698-703 2013 CCA https://doi.org/10.1109/CCA.2013.6662831 conf/IEEEcca/2013 db/conf/IEEEcca/IEEEcca2013.html#TallapragadaC13 Pavankumar Tallapragada Nikhil Chopra Event-triggered dynamic output feedback control of LTI systems over Sensor-Controller-Actuator Networks. 4625-4630 2013 CDC https://doi.org/10.1109/CDC.2013.6760613 conf/cdc/2013 db/conf/cdc/cdc2013.html#TallapragadaC13 Yen-Chen Liu Nikhil Chopra Position regulation of flexible-joint robots with input/output constant delays. 5884-5889 2013 IROS https://doi.org/10.1109/IROS.2013.6697209 conf/iros/2013 db/conf/iros/iros2013.html#LiuC13 Lorenzo Sabattini Cristian Secchi Nikhil Chopra Decentralized control for maintenance of strong connectivity for directed graphs. 978-986 2013 MED https://doi.org/10.1109/MED.2013.6608840 conf/med/2013 db/conf/med/med2013.html#SabattiniSC13

Pavankumar Tallapragada Nikhil Chopra On Event Triggered Tracking for Nonlinear Systems http://arxiv.org/abs/1301.0875 2013 CoRR abs/1301.0875 db/journals/corr/corr1301.html#abs-1301-0875

Pavankumar Tallapragada Nikhil Chopra Decentralized Event-Triggering for Control of Nonlinear Systems http://arxiv.org/abs/1302.4019 2013 CoRR abs/1302.4019 db/journals/corr/corr1302.html#abs-1302-4019

Nikhil Chopra Output Synchronization on Strongly Connected Graphs. 2896-2901 2012 57 IEEE Trans. Autom. Control. 11 https://doi.org/10.1109/TAC.2012.2193704 db/journals/tac/tac57.html#Chopra12

Yen-Chen Liu Nikhil Chopra Controlled Synchronization of Heterogeneous Robotic Manipulators in the Task Space. 268-275 2012 28 IEEE Trans. Robotics 1 https://doi.org/10.1109/TRO.2011.2168690 db/journals/trob/trob28.html#LiuC12

Yen-Chen Liu Nikhil Chopra Control of Robotic Manipulators Under Input/Output Communication Delays: Theory and Experiments. 742-751 2012 28 IEEE Trans. Robotics 3 https://doi.org/10.1109/TRO.2012.2183056 db/journals/trob/trob28.html#LiuC12a

Pavankumar Tallapragada Nikhil Chopra én Co-design of event trigger and quantizer for emulation based control. 3772-3777 2012 ACC https://doi.org/10.1109/ACC.2012.6315501 conf/amcc/2012 db/conf/amcc/acc2012.html#TallapragadaC12 Pavankumar Tallapragada Nikhil Chopra Event-triggered dynamic output feedback control for LTI systems. 6597-6602 2012 CDC https://doi.org/10.1109/CDC.2012.6426217 conf/cdc/2012 db/conf/cdc/cdc2012.html#TallapragadaC12 Lorenzo Sabattini Cristian Secchi Nikhil Chopra Decentralized connectivity maintenance for networked Lagrangian dynamical systems. 2433-2438 2012 ICRA https://doi.org/10.1109/ICRA.2012.6224857 conf/icra/2012 db/conf/icra/icra2012.html#SabattiniSC12 Pavankumar Tallapragada Nikhil Chopra Lyapunov Based Sampling for Adaptive Tracking Control in Robot Manipulators: An Experimental Comparison. 683-698 2012 ISER https://doi.org/10.1007/978-3-319-00065-7_46 conf/iser/2012 db/conf/iser/iser2012.html#TallapragadaC12 Lorenzo Sabattini Andrea Gasparri Cristian Secchi Nikhil Chopra Enhanced Connectivity Maintenance for Multi-Robot Systems. 319-324 2012 SyRoCo https://doi.org/10.3182/20120905-3-HR-2030.00030 conf/syroco/2012 db/conf/syroco/syroco2012.html#SabattiniGSC12 Lorenzo Sabattini Nikhil Chopra Cristian Secchi On decentralized connectivity maintenance for mobile robotic systems. 988-993 2011 CDC/ECC https://doi.org/10.1109/CDC.2011.6161067 conf/cdc/2011 db/conf/cdc/cdc2011.html#SabattiniCS11 Pavankumar Tallapragada Nikhil Chopra On event triggered trajectory tracking for control affine nonlinear systems. 5377-5382 2011 CDC/ECC https://doi.org/10.1109/CDC.2011.6161531 conf/cdc/2011 db/conf/cdc/cdc2011.html#TallapragadaC11 Yen-Chen Liu Nikhil Chopra Semi-autonomous teleoperation in task space with redundant slave robot under communication delays. 679-684 2011 IROS https://doi.org/10.1109/IROS.2011.6095114 conf/iros/2011 db/conf/iros/iros2011.html#LiuC11 Lorenzo Sabattini Nikhil Chopra Cristian Secchi Distributed control of multi-robot systems with global connectivity maintenance. 2321-2326 2011 IROS https://doi.org/10.1109/IROS.2011.6094818 https://www.wikidata.org/entity/Q56421153 conf/iros/2011 db/conf/iros/iros2011.html#SabattiniCS11 Nikhil Chopra On ultimate boundedness of delay synchronization algorithms for semi-passive systems. 1663-1668 2010 Allerton https://doi.org/10.1109/ALLERTON.2010.5707116 conf/allerton/2010 db/conf/allerton/allerton2010.html#Chopra10 Yen-Chen Liu Nikhil Chopra Robust controlled synchronization of interconnected robotic systems. 1434-1439 2010 ACC https://doi.org/10.1109/ACC.2010.5531223 conf/amcc/2010 db/conf/amcc/acc2010.html#LiuC10 Yen-Chen Liu Nikhil Chopra Synchronization of networked robotic systems on strongly connected graphs. 3194-3199 2010 CDC https://doi.org/10.1109/CDC.2010.5718176 conf/cdc/2010 db/conf/cdc/cdc2010.html#LiuC10 Nikhil Chopra Control of robotic manipulators under time-varying sensing-control delays. 1768-1773 2010 ICRA https://doi.org/10.1109/ROBOT.2010.5509524 conf/icra/2010 db/conf/icra/icra2010.html#Chopra10 Yen-Chen Liu Nikhil Chopra Control of Robotic Manipulators with Input-Output Delays: An Experimental Verification. 823-837 2010 ISER https://doi.org/10.1007/978-3-642-28572-1_57 conf/iser/2010 db/conf/iser/iser2010.html#LiuC10

Nikhil Chopra Mark W. Spong On Exponential Synchronization of Kuramoto Oscillators. 353-357 2009 54 IEEE Trans. Autom. Control. 2 https://doi.org/10.1109/TAC.2008.2007884 db/journals/tac/tac54.html#ChopraS09

Nikhil Chopra Control of robotic manipulators with input/output delays. 2024-2029 2009 ACC https://doi.org/10.1109/ACC.2009.5160733 conf/amcc/2009 db/conf/amcc/acc2009.html#Chopra09

Nikhil Chopra Mark W. Spong Rogelio Lozano Synchronization of bilateral teleoperators with time delay. 2142-2148 2008 44 Autom. 8 https://doi.org/10.1016/j.automatica.2007.12.002 db/journals/automatica/automatica44.html#ChopraSL08

Nikhil Chopra Paul Berestesky Mark W. Spong Bilateral Teleoperation Over Unreliable Communication Networks. 304-313 2008 16 IEEE Trans. Control. Syst. Technol. 2 https://doi.org/10.1109/TCST.2007.903397 db/journals/tcst/tcst16.html#ChopraBS08

Nikhil Chopra Dusan M. Stipanovic Mark W. Spong On synchronization and collision avoidance for mechanical systems. 3713-3718 2008 ACC https://doi.org/10.1109/ACC.2008.4587071 conf/amcc/2008 db/conf/amcc/acc2008.html#ChopraSS08 Rogelio Lozano Mark W. Spong Jose Alfredo Guerrero Mata Nikhil Chopra Controllability and observability of leader-based multi-agent systems. 3713-3718 2008 CDC https://doi.org/10.1109/CDC.2008.4739071 conf/cdc/2008 db/conf/cdc/cdc2008.html#LozanoSMC08 Nikhil Chopra Passivity results for interconnected systems with time delay. 4620-4625 2008 CDC https://doi.org/10.1109/CDC.2008.4739368 conf/cdc/2008 db/conf/cdc/cdc2008.html#Chopra08 Nikhil Chopra Mark W. Spong Output Synchronization of Nonlinear Systems with Relative Degree One. 51-64 2008 Recent Advances in Learning and Control https://doi.org/10.1007/978-1-84800-155-8_4 books/sp/08/BBK2008 db/books/collections/BBK2008.html#ChopraS08 Rogelio Lozano Nikhil Chopra Mark W. Spong Convergence Analysis of Bilateral Teleoperation with Constant Human Input. 1443-1448 2007 ACC https://doi.org/10.1109/ACC.2007.4282718 conf/amcc/2007 db/conf/amcc/acc2007.html#LozanoCS07 Nikhil Chopra Mark W. Spong Delay-independent stability for interconnected nonlinear systems with finite L2 gain. 3847-3852 2007 CDC https://doi.org/10.1109/CDC.2007.4434672 conf/cdc/2007 db/conf/cdc/cdc2007.html#ChopraS07 Nikhil Chopra Mark W. Spong Adaptive Synchronization of Bilateral Teleoperators with Time Delay. 257-270 2007 Advances in Telerobotics https://doi.org/10.1007/978-3-540-71364-7_16 series/star/2007-31 db/series/star/star31.html#ChopraS07

Nikhil Chopra Mark W. Spong Romeo Ortega Nikita E. Barabanov On tracking performance in bilateral teleoperation. 861-866 2006 22 IEEE Trans. Robotics 4 https://doi.org/10.1109/TRO.2006.878942 db/journals/trob/trob22.html#ChopraSOB06

Nikhil Chopra Mark W. Spong Output Synchronization of Nonlinear Systems with Time Delay in Communication. 4986-4992 2006 CDC https://doi.org/10.1109/CDC.2006.377258 conf/cdc/2006 db/conf/cdc/cdc2006.html#ChopraS06 Nikhil Chopra Mark W. Spong On Synchronization of Kuramoto Oscillators. 3916-3922 2005 CDC/ECC https://doi.org/10.1109/CDC.2005.1582773 conf/cdc/2005 db/conf/cdc/cdc2005.html#ChopraS05 Paul Berestesky Nikhil Chopra Mark W. Spong Theory and experiments in bilateral teleoperation over the Internet. 456-463 2004 CCA https://doi.org/10.1109/CCA.2004.1387253 conf/IEEEcca/2004 db/conf/IEEEcca/IEEEcca2004.html#BeresteskyCS04 streams/conf/IEEEcca Nikhil Chopra Mark W. Spong Romeo Ortega Nikita E. Barabanov On position tracking in bilateral teleoperation. 5244-5249 2004 ACC https://doi.org/10.23919/ACC.2004.1384685 conf/amcc/2004 db/conf/amcc/acc2004.html#ChopraSOB04 Nikhil Chopra Mark W. Spong Adaptive coordination control of bilateral teleoperators with time delay. 4540-4547 2004 CDC https://doi.org/10.1109/CDC.2004.1429499 conf/cdc/2004 db/conf/cdc/cdc2004.html#ChopraS04 Paul Berestesky Nikhil Chopra Mark W. Spong Discrete Time Passivity in Bilateral Teleoperation over the Internet. 4557-4564 2004 conf/icra/2004 ICRA https://doi.org/10.1109/ROBOT.2004.1302436 db/conf/icra/icra2004-5.html#BeresteskyCS04 Nikhil Chopra Mark W. Spong Sandra Hirche Martin Buss Bilateral teleoperation over the internet: the time varying delay problem. 155-160 2003 ACC https://doi.org/10.1109/ACC.2003.1238930 conf/amcc/2003 db/conf/amcc/acc2003.html#ChopraSHB03 Yiannis Aloimonos Made Widhi Surya Atman Shapour Azarm Rahul Subramonian Bama Nikita E. Barabanov Shraddha Barawkar Amrit Singh BediAmrit S. Bedi Paul Berestesky Alex Beyer Jasmine Blunt Martin Buss Kai Cai 0002 Kushal Chakrabarti Prasad Vilas Chanekar Debasish Chatterjee Fikadu T. Dagefu Yimeng Dong Avik Dutt Masayuki Fujita Shripad Gade Andrea Gasparri Matthew Gray Nirupam Gupta Takeshi Hatanaka Gurtajbir Singh Herr Sandra Hirche Yutaka Hori Hideaki Ishii Takayuki Ishizaki Kaustubh Joshi 0002 Nare Karapetyan Jonathan Katz Na Li 0002 Xiaomin Lin 0002 Tianchen Liu Yen-Chen Liu Rogelio Lozano Debanjan Mallik Jose Alfredo Guerrero Mata Angelos Mavrogiannis Abhinav Modi Masaaki Nagahara Romeo Ortega Zhihua Qu Daniel E. Quevedo Ioannis M. Rekleitis Michel A. Reniers Lorenzo Sabattini Brian M. Sadler Cristian Secchi Elisabeth Smela Mark W. Spong Dhruv Srinivasan Dusan M. Stipanovic Pavankumar Tallapragada Pratap Tokekar Jeffrey N. Twigg Nitin H. Vaidya Lasitha Weerakoon Alan Williams Zhenqi Wu Junya Yamauchi Zepeng Ye Miao Yu 0007