@article{sheng_iyer_sun_kim_sharma_2022, title={A Hybrid Knee Exoskeleton Using Real-Time Ultrasound-Based Muscle Fatigue Assessment}, volume={5}, DOI={10.1109/TMECH.2022.3171086}, journal={IEEE-ASME TRANSACTIONS ON MECHATRONICS}, author={Sheng, Zhiyu and Iyer, Ashwin and Sun, Ziyue and Kim, Kang and Sharma, Nitin}, year={2022}, month={May} }
 @article{sun_qiu_iyer_dicianno_sharma_2022, title={Continuous Switching Control of an Input-Delayed Antagonistic Muscle Pair During Functional Electrical Stimulation}, DOI={10.1109/TCST.2022.3178935}, journal={IEEE Transactions on Control Systems Technology}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Sun, Ziyue and Qiu, Tianyi and Iyer, Ashwin and Dicianno, Brad E. and Sharma, Nitin}, year={2022}, pages={1–11} }
 @article{zhang_fragnito_franz_sharma_2022, title={Fused Ultrasound And Electromyography-Driven Neuromuscular Model To Improve Plantarflexion Moment Prediction Across Walking Speeds}, DOI={10.21203/rs.3.rs-1136552/v1}, author={Zhang, Qiang and Fragnito, Natalie and Franz, Jason R. and Sharma, Nitin}, year={2022}, month={Jan} }
 @article{zhang_clark_franz_sharma_2022, title={Personalized fusion of ultrasound and electromyography-derived neuromuscular features increases prediction accuracy of ankle moment during plantarflexion}, volume={1}, DOI={10.1016/j.bspc.2021.103100}, journal={BIOMEDICAL SIGNAL PROCESSING AND CONTROL}, author={Zhang, Qiang and Clark, William H. and Franz, Jason R. and Sharma, Nitin}, year={2022}, month={Jan} }
 @article{zhang_iyer_lambeth_kim_sharma_2022, title={Ultrasound Echogenicity as an Indicator of Muscle Fatigue during Functional Electrical Stimulation}, volume={1}, DOI={10.3390/s22010335}, journal={SENSORS}, author={Zhang, Qiang and Iyer, Ashwin and Lambeth, Krysten and Kim, Kang and Sharma, Nitin}, year={2022}, month={Jan} }
 @article{zhang_iyer_sun_kim_sharma_2021, title={A Dual-Modal Approach Using Electromyography and Sonomyography Improves Prediction of Dynamic Ankle Movement: A Case Study}, volume={29}, DOI={10.1109/TNSRE.2021.3106900}, journal={IEEE TRANSACTIONS ON NEURAL SYSTEMS AND REHABILITATION ENGINEERING}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Zhang, Qiang and Iyer, Ashwin and Sun, Ziyue and Kim, Kang and Sharma, Nitin}, year={2021}, pages={1944–1954} }
 @article{bao_sheng_dicianno_sharma_2021, title={A Tube-Based Model Predictive Control Method to Regulate a Knee Joint With Functional Electrical Stimulation and Electric Motor Assist}, volume={29}, DOI={10.1109/TCST.2020.3034850}, number={5}, journal={IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Bao, Xuefeng and Sheng, Zhiyu and Dicianno, Brad E. and Sharma, Nitin}, year={2021}, month={Sep}, pages={2180–2191} }
 @inproceedings{sun_bao_zhang_lambeth_sharma_2021, title={A Tube-based Model Predictive Control Method for Joint Angle Tracking with Functional Electrical Stimulation and An Electric Motor Assist}, ISBN={9781665441971}, url={http://dx.doi.org/10.23919/acc50511.2021.9483084}, DOI={10.23919/acc50511.2021.9483084}, booktitle={2021 American Control Conference (ACC)}, publisher={IEEE}, author={Sun, Ziyue and Bao, Xuefeng and Zhang, Qiang and Lambeth, Krysten and Sharma, Nitin}, year={2021}, month={May} }
 @article{molazadeh_zhang_bao_sharma_2021, title={An Iterative Learning Controller for a Switched Cooperative Allocation Strategy During Sit-to-Stand Tasks with a Hybrid Exoskeleton}, volume={30}, DOI={10.1109/TCST.2021.3089885}, number={3}, journal={IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Molazadeh, Vahidreza and Zhang, Qiang and Bao, Xuefeng and Sharma, Nitin}, year={2021}, month={Jul}, pages={1021–1036} }
 @article{zhang_iyer_kim_sharma_2021, title={Evaluation of Non-Invasive Ankle Joint Effort Prediction Methods for Use in Neurorehabilitation Using Electromyography and Ultrasound Imaging}, volume={68}, ISBN={1558-2531}, DOI={10.1109/TBME.2020.3014861}, number={3}, journal={IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Zhang, Qiang and Iyer, Ashwin and Kim, Kang and Sharma, Nitin}, year={2021}, month={Mar}, pages={1044–1055} }
 @article{zhang_fragnito_myers_sharma_2021, title={Plantarflexion Moment Prediction during the Walking Stance Phase with an sEMG-Ultrasound Imaging-Driven Model}, DOI={10.1109/EMBC46164.2021.9630046}, journal={2021 43RD ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE & BIOLOGY SOCIETY (EMBC)}, author={Zhang, Qiang and Fragnito, Natalie and Myers, Alison and Sharma, Nitin}, year={2021} }
 @article{molazadeh_zhang_bao_dicianno_sharma_2021, title={Shared Control of a Powered Exoskeleton and Functional Electrical Stimulation Using Iterative Learning}, volume={11}, DOI={10.3389/frobt.2021.711388}, journal={FRONTIERS IN ROBOTICS AND AI}, author={Molazadeh, Vahidreza and Zhang, Qiang and Bao, Xuefeng and Dicianno, Brad E. and Sharma, Nitin}, year={2021}, month={Nov} }
 @article{sheng_sun_molazadeh_sharma_2021, title={Switched control of an N-degree-of-freedom input delayed wearable robotic system}, volume={125}, ISBN={1873-2836}, DOI={10.1016/j.automatica.2020.109455}, journal={AUTOMATICA}, author={Sheng, Zhiyu and Sun, Ziyue and Molazadeh, Vahidreza and Sharma, Nitin}, year={2021}, month={Mar} }
 @article{zhang_iyer_lambeth_kim_sharma_2021, title={Ultrasound Echogenicity-based Assessment of Muscle Fatigue During Functional Electrical Stimulation}, DOI={10.1109/EMBC46164.2021.9630325}, journal={2021 43RD ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE & BIOLOGY SOCIETY (EMBC)}, author={Zhang, Qiang and Iyer, Ashwin and Lambeth, Krysten and Kim, Kang and Sharma, Nitin}, year={2021} }
 @inproceedings{sheng_kim_sharma_2020, title={An Ultrasound Imaging Based Observer for Estimating NMES-Induced Muscle Fatigue: Theory and Simulation}, ISBN={9780791884270}, url={http://dx.doi.org/10.1115/dscc2020-3196}, DOI={10.1115/dscc2020-3196}, abstractNote={Abstract
               <jats:p>Neuroprosthetic devices that use transcutaneous neuromuscular electrical stimulation (NMES) are potential interventions to restore skeletal muscle function in people with neurological disorders. As commonly noted, how to assess the NMES-induced muscle fatigue is a critical problem. This is because the capability of fatigue assessment is a necessary precursor for optimally modulating the NMES dosage to improve the control performance of a neuroprosthesis and ensure user’s safety. To effectively estimate the NMES-induced muscle fatigue, this paper proposes a novel state observer that combines a mathematical predictive fatigue model and intermittent feedback from ultrasound-derived strain images. The strain images quantify muscle contractility during NMES. Principal component regression (PCR) is used to derive a relationship between the strain images and instantaneous muscle force production. Lyapunov stability analysis was performed to obtain the convergence property of the designed observer. A globally uniformly ultimately bounded (GUUB) result was obtained. Simulations based on pre-recorded data from a human experiment were also conducted to demonstrate the performance of the designed observer.}, booktitle={Volume 1: Adaptive/Intelligent Sys. Control; Driver Assistance/Autonomous Tech.; Control Design Methods; Nonlinear Control; Robotics; Assistive/Rehabilitation Devices; Biomedical/Neural Systems; Building Energy Systems; Connected Vehicle Systems; Control/Estimation of Energy Systems; Control Apps.; Smart Buildings/Microgrids; Education; Human-Robot Systems; Soft Mechatronics/Robotic Components/Systems; Energy/Power Systems; Energy Storage; Estimation/Identification; Vehicle Efficiency/Emissions}, publisher={American Society of Mechanical Engineers}, author={Sheng, Zhiyu and Kim, Kang and Sharma, Nitin}, year={2020}, month={Oct} }
 @inproceedings{iyer_sheng_zhang_kim_sharma_2020, place={Hoboken, NJ}, title={Analysis of Tremor During Grasp Using Ultrasound Imaging: Preliminary Study}, DOI={10.1109/BioRob49111.2020.9224446}, booktitle={Proceedings of the 8th IEEE RAS/EMBS International Conference on Biomedical Robotics and Biomechatronics}, publisher={IEEE}, author={Iyer, A. and Sheng, Z. and Zhang, Q. and Kim, K. and Sharma, N.}, year={2020}, pages={533–538} }
 @inbook{moreno_mohammed_sharma_del-ama_2020, title={Hybrid Wearable Robotic Exoskeletons for Human Walking}, ISBN={9780128146590}, url={http://dx.doi.org/10.1016/b978-0-12-814659-0.00018-7}, DOI={10.1016/b978-0-12-814659-0.00018-7}, booktitle={Wearable Robotics}, publisher={Elsevier}, author={Moreno, Juan C. and Mohammed, Samer and Sharma, Nitin and del-Ama, Antonio J.}, year={2020}, pages={347–364} }
 @inbook{bao_molazadeh_dodson_sharma_2020, place={Cham, Switzerland}, title={Model Predictive Control-Based Knee Actuator Allocation During a Standing-Up Motion with a Powered Exoskeleton and Functional Electrical Stimulation}, DOI={10.1007/978-3-030-38740-2_6}, booktitle={Advances in Motor Neuroprostheses}, publisher={Springer}, author={Bao, X. and Molazadeh, V. and Dodson, A. and Sharma, N.}, editor={Vinjamuri, R.Editor}, year={2020}, pages={89–100} }
 @article{zhang_kim_sharma_2020, title={Prediction of Ankle Dorsiflexion Moment by Combined Ultrasound Sonography and Electromyography}, volume={28}, ISBN={1558-0210}, DOI={10.1109/TNSRE.2019.2953588}, number={1}, journal={IEEE TRANSACTIONS ON NEURAL SYSTEMS AND REHABILITATION ENGINEERING}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Zhang, Qiang and Kim, Kang and Sharma, Nitin}, year={2020}, month={Jan}, pages={318–327} }
 @article{sheng_sharma_kim_2020, title={Quantitative Assessment of Changes in Muscle Contractility Due to Fatigue During NMES: An Ultrasound Imaging Approach}, volume={67}, DOI={10.1109/TBME.2019.2921754}, number={3}, journal={IEEE Transactions on Biomedical Engineering}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Sheng, Zhiyu and Sharma, Nitin and Kim, Kang}, year={2020}, month={Mar}, pages={832–841} }
 @inproceedings{zhang_iyer_sun_dodson_sharma_2020, title={Sampled-Data Observer Based Dynamic Surface Control of Delayed Neuromuscular Functional Electrical Stimulation}, ISBN={9780791884270}, url={http://dx.doi.org/10.1115/dscc2020-3225}, DOI={10.1115/dscc2020-3225}, number={DSCC2020-3225DSCC2020-3225}, booktitle={Volume 1: Adaptive/Intelligent Sys. Control; Driver Assistance/Autonomous Tech.; Control Design Methods; Nonlinear Control; Robotics; Assistive/Rehabilitation Devices; Biomedical/Neural Systems; Building Energy Systems; Connected Vehicle Systems; Control/Estimation of Energy Systems; Control Apps.; Smart Buildings/Microgrids; Education; Human-Robot Systems; Soft Mechatronics/Robotic Components/Systems; Energy/Power Systems; Energy Storage; Estimation/Identification; Vehicle Efficiency/Emissions}, publisher={American Society of Mechanical Engineers}, author={Zhang, Qiang and Iyer, Ashwin and Sun, Ziyue and Dodson, Albert and Sharma, Nitin}, year={2020}, month={Oct} }
 @article{sheng_sharma_kim_2020, title={Ultra-High-Frame-Rate Ultrasound Monitoring of Muscle Contractility Changes Due to Neuromuscular Electrical Stimulation}, ISBN={1573-9686}, DOI={10.1007/s10439-020-02536-7}, journal={ANNALS OF BIOMEDICAL ENGINEERING}, author={Sheng, Zhiyu and Sharma, Nitin and Kim, Kang}, year={2020} }
 @article{bao_molazadeh_dodson_dicianno_sharma_2020, title={Using Person-Specific Muscle Fatigue Characteristics to Optimally Allocate Control in a Hybrid Exoskeleton—Preliminary Results}, volume={2}, DOI={10.1109/TMRB.2020.2977416}, number={2}, journal={IEEE Transactions on Medical Robotics and Bionics}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Bao, Xuefeng and Molazadeh, Vahidreza and Dodson, Albert and Dicianno, Brad E. and Sharma, Nitin}, year={2020}, month={May}, pages={226–235} }
 @inproceedings{zhang_iyer_kim_sharma_2020, title={Volitional Contractility Assessment of Plantar Flexors by Using Non-invasive Neuromuscular Measurements}, ISBN={9781728159072}, url={http://dx.doi.org/10.1109/biorob49111.2020.9224298}, DOI={10.1109/biorob49111.2020.9224298}, booktitle={2020 8th IEEE RAS/EMBS International Conference for Biomedical Robotics and Biomechatronics (BioRob)}, publisher={IEEE}, author={Zhang, Qiang and Iyer, Ashwin and Kim, Kang and Sharma, Nitin}, year={2020}, month={Nov} }
 @article{molazadeh_sheng_bao_sharma_2019, title={A Robust Iterative Learning Switching Controller for following Virtual Constraints: Application to a Hybrid Neuroprosthesis}, volume={51}, ISSN={2405-8963}, url={http://dx.doi.org/10.1016/j.ifacol.2019.01.011}, DOI={10.1016/j.ifacol.2019.01.011}, number={34}, journal={IFAC-PapersOnLine}, publisher={Elsevier BV}, author={Molazadeh, Vahidreza and Sheng, Zhiyu and Bao, Xuefeng and Sharma, Nitin}, year={2019}, pages={28–33} }
 @inproceedings{zhang_sheng_moore-clingenpeel_kim_sharma_2019, place={Hoboken, NJ}, title={Ankle Dorsiflexion Strength Monitoring by Combining Sonomyography and Electromyography}, ISBN={9781728127552}, url={http://dx.doi.org/10.1109/icorr.2019.8779530}, DOI={10.1109/icorr.2019.8779530}, booktitle={2019 IEEE 16th International Conference on Rehabilitation Robotics (ICORR)}, publisher={IEEE}, author={Zhang, Qiang and Sheng, Zhiyu and Moore-Clingenpeel, Frank and Kim, Kang and Sharma, Nitin}, year={2019}, month={Jun} }
 @article{sun_bao_sharma_2019, title={Lyapunov-based Model Predictive Control of an Input Delayed Functional Electrical Simulation}, volume={51}, ISSN={2405-8963}, url={http://dx.doi.org/10.1016/j.ifacol.2019.01.037}, DOI={10.1016/j.ifacol.2019.01.037}, number={34}, journal={IFAC-PapersOnLine}, publisher={Elsevier BV}, author={Sun, Ziyue and Bao, Xuefeng and Sharma, Nitin}, year={2019}, pages={290–295} }
 @article{bao_kirsch_dodson_sharma_2019, title={Model Predictive Control of a Feedback-Linearized Hybrid Neuroprosthetic System With a Barrier Penalty}, volume={14}, ISSN={1555-1415 1555-1423}, url={http://dx.doi.org/10.1115/1.4042903}, DOI={10.1115/1.4042903}, abstractNote={Abstract
               <jats:p>Functional electrical stimulation (FES) is prescribed as a treatment to restore motor function in individuals with neurological impairments. However, the rapid onset of FES-induced muscle fatigue significantly limits its duration of use and limb movement quality. In this paper, an electric motor-assist is proposed to alleviate the fatigue effects by sharing work load with FES. A model predictive control (MPC) method is used to allocate control inputs to FES and the electric motor. To reduce the computational load, the dynamics is feedback linearized so that the nominal model inside the MPC method becomes linear. The state variables: the angular position and the muscle fatigue are still preserved in the transformed state space to keep the optimization meaningful. Because after feedback linearization the original linear input constraints may become nonlinear and state-dependent, a barrier cost function is used to overcome this issue. The simulation results show a satisfactory control performance and a reduction in the computation due to the linearization.}, number={10}, journal={Journal of Computational and Nonlinear Dynamics}, publisher={ASME International}, author={Bao, Xuefeng and Kirsch, Nicholas and Dodson, Albert and Sharma, Nitin}, year={2019}, month={Sep} }
 @inproceedings{sheng_sharma_kim_2019, title={Muscle Fatigue Assessment in a Wearable Neuroprosthesis Using Ultrasound Strain Imaging}, author={Sheng, Z. and Sharma, N. and Kim, K}, year={2019}, month={Jun} }
 @inproceedings{molazadeh_zhang_bao_sharma_2019, title={Neural-Network Based Iterative Learning Control of a Hybrid Exoskeleton with an MPC Allocation Strategy}, number={DSCC2019-9191}, booktitle={Proceedings of the ASME Dynamic Systems Control Conference}, author={Molazadeh, V. and Zhang, Q. and Bao, X. and Sharma, N.}, year={2019}, month={Oct} }
 @misc{sharma_2019, title={New Control and Sensing Approaches for Integrating Functional Electrical Stimulation in a Wearable Exoskeletons}, author={Sharma, N.}, year={2019}, month={Feb} }
 @inproceedings{zhang_sheng_kim_sharma_2019, title={Observer Design for a Nonlinear Neuromuscular System with Multi-rate Sampled and Delayed Output Measurements}, ISBN={9781538679265}, url={http://dx.doi.org/10.23919/acc.2019.8814473}, DOI={10.23919/acc.2019.8814473}, booktitle={2019 American Control Conference (ACC)}, publisher={IEEE}, author={Zhang, Qiang and Sheng, Zhiyu and Kim, Kang and Sharma, Nitin}, year={2019}, month={Jul} }
 @article{bao_mao_munro_sun_sharma_2019, title={Sub-optimally solving actuator redundancy in a hybrid neuroprosthetic system with a multi-layer neural network structure}, volume={3}, DOI={10.1007/s41315-019-00100-8}, number={3}, journal={International Journal of Intelligent Robotics and Applications}, publisher={Springer Science and Business Media LLC}, author={Bao, Xuefeng and Mao, Zhi-Hong and Munro, Paul and Sun, Ziyue and Sharma, Nitin}, year={2019}, month={Sep}, pages={298–313} }
 @inproceedings{sun_bao_sharma_2019, title={Tube-based Model Predictive Control of An Input Delayed Functional Electrical Stimulation}, ISBN={9781538679265}, url={http://dx.doi.org/10.23919/acc.2019.8815302}, DOI={10.23919/acc.2019.8815302}, booktitle={2019 American Control Conference (ACC)}, publisher={IEEE}, author={Sun, Ziyue and Bao, Xuefeng and Sharma, Nitin}, year={2019}, month={Jul} }
 @article{chen_liu_xiao_sharma_cho_kim_2019, title={Ultrasound Tracking of the Acoustically Actuated Microswimmer}, volume={66}, DOI={10.1109/TBME.2019.2902523}, number={11}, journal={IEEE Transactions on Biomedical Engineering}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Chen, Qiyang and Liu, Fang-Wei and Xiao, Zunding and Sharma, Nitin and Cho, Sung Kwon and Kim, Kang}, year={2019}, month={Nov}, pages={3231–3237} }
 @article{alibeji_molazadeh_dicianno_sharma_2018, title={A Control Scheme That Uses Dynamic Postural Synergies to Coordinate a Hybrid Walking Neuroprosthesis: Theory and Experiments}, volume={12}, ISSN={1662-453X}, url={http://dx.doi.org/10.3389/fnins.2018.00159}, DOI={10.3389/fnins.2018.00159}, journal={Frontiers in Neuroscience}, publisher={Frontiers Media SA}, author={Alibeji, Naji A. and Molazadeh, Vahidreza and Dicianno, Brad E. and Sharma, Nitin}, year={2018}, month={Apr} }
 @article{alibeji_molazadeh_moore-clingenpeel_sharma_2018, title={A Muscle Synergy-Inspired Control Design to Coordinate Functional Electrical Stimulation and a Powered Exoskeleton: Artificial Generation of Synergies to Reduce Input Dimensionality}, volume={38}, ISSN={1066-033X 1941-000X}, url={http://dx.doi.org/10.1109/mcs.2018.2866603}, DOI={10.1109/mcs.2018.2866603}, number={6}, journal={IEEE Control Systems}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Alibeji, Naji A. and Molazadeh, Vahidreza and Moore-Clingenpeel, Frank and Sharma, Nitin}, year={2018}, month={Dec}, pages={35–60} }
 @inproceedings{molazadeh_sheng_sharma_2018, title={A Within-Stride Switching Controller for Walking with Virtual Constraints: Application to a Hybrid Neuroprosthesis}, ISBN={9781538654286}, url={http://dx.doi.org/10.23919/acc.2018.8431436}, DOI={10.23919/acc.2018.8431436}, booktitle={2018 Annual American Control Conference (ACC)}, publisher={IEEE}, author={Molazadeh, Vahidreza and Sheng, Zhiyu and Sharma, Nitin}, year={2018}, month={Jun} }
 @inproceedings{moore-clingenpeel_molazadeh_sharma_2018, place={Hoboken, NJ}, title={An Active-Subspace-Based Algorithm for Reducing Redundancy in a Hybrid Neuroprosthesis}, ISBN={9781538613955}, url={http://dx.doi.org/10.1109/cdc.2018.8619032}, DOI={10.1109/cdc.2018.8619032}, booktitle={2018 IEEE Conference on Decision and Control (CDC)}, publisher={IEEE}, author={Moore-Clingenpeel, Frank and Molazadeh, Vahidreza and Sharma, Nitin}, year={2018}, month={Dec} }
 @article{doll_kirsch_bao_dicianno_sharma_2018, title={Dynamic optimization of stimulation frequency to reduce isometric muscle fatigue using a modified Hill‐Huxley model}, volume={57}, ISSN={0148-639X 1097-4598}, url={http://dx.doi.org/10.1002/mus.25777}, DOI={10.1002/mus.25777}, number={4}, journal={Muscle & Nerve}, publisher={Wiley}, author={Doll, Brian D. and Kirsch, Nicholas A. and Bao, Xuefeng and Dicianno, Brad E. and Sharma, Nitin}, year={2018}, month={Apr}, pages={634–641} }
 @inproceedings{sheng_molazadeh_sharma_2018, title={Hybrid Dynamical System Model and Robust Control of a Hybrid Neuroprosthesis Under Fatigue Based Switching}, ISBN={9781538654286}, url={http://dx.doi.org/10.23919/acc.2018.8431258}, DOI={10.23919/acc.2018.8431258}, booktitle={2018 Annual American Control Conference (ACC)}, publisher={IEEE}, author={Sheng, Zhiyu and Molazadeh, Vahidreza and Sharma, Nitin}, year={2018}, month={Jun} }
 @article{kirsch_bao_alibeji_dicianno_sharma_2018, title={Model-Based Dynamic Control Allocation in a Hybrid Neuroprosthesis}, volume={26}, DOI={10.1109/TNSRE.2017.2756023}, number={1}, journal={IEEE Transactions on Neural Systems and Rehabilitation Engineering}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Kirsch, Nicholas A. and Bao, Xuefeng and Alibeji, Naji A. and Dicianno, Brad E. and Sharma, Nitin}, year={2018}, month={Jan}, pages={224–232} }
 @article{alibeji_kirsch_dicianno_sharma_2017, title={A Modified Dynamic Surface Controller for Delayed Neuromuscular Electrical Stimulation}, volume={22}, DOI={10.1109/TMECH.2017.2704915}, number={4}, journal={IEEE/ASME Transactions on Mechatronics}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Alibeji, Naji and Kirsch, Nicholas and Dicianno, Brad E. and Sharma, Nitin}, year={2017}, month={Aug}, pages={1755–1764} }
 @article{sharma_kirsch_alibeji_dixon_2017, title={A Non-Linear Control Method to Compensate for Muscle Fatigue during Neuromuscular Electrical Stimulation}, volume={4}, ISSN={2296-9144}, url={http://dx.doi.org/10.3389/frobt.2017.00068}, DOI={10.3389/frobt.2017.00068}, journal={Frontiers in Robotics and AI}, publisher={Frontiers Media SA}, author={Sharma, Nitin and Kirsch, Nicholas Andrew and Alibeji, Naji A. and Dixon, Warren E.}, year={2017}, month={Dec} }
 @article{allen_zhong_kirsch_dani_clark_sharma_2017, title={A Nonlinear Dynamics-Based Estimator for Functional Electrical Stimulation: Preliminary Results From Lower-Leg Extension Experiments}, volume={25}, ISSN={1534-4320 1558-0210}, url={http://dx.doi.org/10.1109/tnsre.2017.2748420}, DOI={10.1109/TNSRE.2017.2748420}, number={12}, journal={IEEE Transactions on Neural Systems and Rehabilitation Engineering}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Allen, Marcus and Zhong, Qiang and Kirsch, Nicholas and Dani, Ashwin and Clark, William W. and Sharma, Nitin}, year={2017}, month={Dec}, pages={2365–2374} }
 @article{alibeji_sharma_2017, title={A PID-Type Robust Input Delay Compensation Method for Uncertain Euler–Lagrange Systems}, volume={25}, DOI={10.1109/TCST.2016.2634503}, number={6}, journal={IEEE Transactions on Control Systems Technology}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Alibeji, Naji and Sharma, Nitin}, year={2017}, month={Nov}, pages={2235–2242} }
 @inproceedings{bao_sheng_sharma_2017, place={Vancouver}, title={A Tube-based Model Predictive Control Method for Sharing Control Inputs in a Hybrid Neuroprosthesis}, author={Bao, X. and Sheng, Z. and Sharma, N.}, year={2017}, month={Oct} }
 @inproceedings{bao_sun_sharma_2017, title={A recurrent neural network based MPC for a hybrid neuroprosthesis system}, ISBN={9781509028733}, url={http://dx.doi.org/10.1109/cdc.2017.8264356}, DOI={10.1109/cdc.2017.8264356}, booktitle={2017 IEEE 56th Annual Conference on Decision and Control (CDC)}, publisher={IEEE}, author={Bao, Xuefeng and Sun, Ziyue and Sharma, Nitin}, year={2017}, month={Dec} }
 @article{alibeji_kirsch_sharma_2017, title={An adaptive low-dimensional control to compensate for actuator redundancy and FES-induced muscle fatigue in a hybrid neuroprosthesis}, volume={59}, ISSN={0967-0661}, url={http://dx.doi.org/10.1016/j.conengprac.2016.07.015}, DOI={10.1016/j.conengprac.2016.07.015}, journal={Control Engineering Practice}, publisher={Elsevier BV}, author={Alibeji, Naji and Kirsch, Nicholas and Sharma, Nitin}, year={2017}, month={Feb}, pages={204–219} }
 @article{alibeji_dicianno_sharma_2017, title={Bilateral control of functional electrical stimulation and robotics-based telerehabilitation}, volume={1}, DOI={10.1007/s41315-016-0003-5}, number={1}, journal={International Journal of Intelligent Robotics and Applications}, publisher={Springer Science and Business Media LLC}, author={Alibeji, Naji and Dicianno, Brad E. and Sharma, Nitin}, year={2017}, month={Feb}, pages={6–18} }
 @inbook{kirsch_alibeji_redfern_sharma_2017, place={Cham, Switzerland}, series={Biosystems & Biorobotics}, title={Dynamic Optimization of a Hybrid Gait Neuroprosthesis to Improve Efficiency and Walking Duration: A Simulation Study}, ISBN={9783319466682 9783319466699}, ISSN={2195-3562 2195-3570}, url={http://dx.doi.org/10.1007/978-3-319-46669-9_113}, DOI={10.1007/978-3-319-46669-9_113}, booktitle={Converging Clinical and Engineering Research on Neurorehabilitation II}, publisher={Springer International Publishing}, author={Kirsch, Nicholas A. and Alibeji, Naji A. and Redfern, Mark and Sharma, Nitin}, editor={Ibáñez, J. and González-Vargas, J. and Azorín, J. and Akay, M. and Pons, J.Editors}, year={2017}, pages={687–691}, collection={Biosystems & Biorobotics} }
 @inproceedings{dodson_alibeji_sharma_2017, title={Experimental demonstration of a delay compensating controller in a hybrid walking neuroprosthesis}, ISBN={9781509046034}, url={http://dx.doi.org/10.1109/ner.2017.8008390}, DOI={10.1109/ner.2017.8008390}, booktitle={2017 8th International IEEE/EMBS Conference on Neural Engineering (NER)}, publisher={IEEE}, author={Dodson, Albert and Alibeji, Naji and Sharma, Nitin}, year={2017}, month={May} }
 @inproceedings{sharma_2017, title={Human Motor Control Inspired Controller to Compensate for Actuator Redundancy in a Hybrid Neuroprosthesis}, booktitle={Workshop on Assistance and Service Robotics in a Human Environment}, author={Sharma, N.}, year={2017}, month={Sep} }
 @inbook{sharma_kirsch_2017, place={London}, title={Modeling and Dynamic Optimization of a Hybrid Neuroprosthesis for Gait Restoration}, ISBN={9780128031377}, url={http://dx.doi.org/10.1016/b978-0-12-803137-7.00008-2}, DOI={10.1016/b978-0-12-803137-7.00008-2}, booktitle={Human Modelling for Bio-Inspired Robotics}, publisher={Academic Press/Elsevier}, author={Sharma, N. and Kirsch, N.}, editor={Ueda, J. and Kurita, Y.Editors}, year={2017}, pages={139–159} }
 @article{kirsch_alibeji_sharma_2017, title={Nonlinear model predictive control of functional electrical stimulation}, volume={58}, ISSN={0967-0661}, url={http://dx.doi.org/10.1016/j.conengprac.2016.03.005}, DOI={10.1016/j.conengprac.2016.03.005}, journal={Control Engineering Practice}, publisher={Elsevier BV}, author={Kirsch, Nicholas and Alibeji, Naji and Sharma, Nitin}, year={2017}, month={Jan}, pages={319–331} }
 @inbook{alibeji_kirsch_sharma_2017, place={Cham, Switzerland}, series={Biosystems & Biorobotics}, title={Preliminary Experiments of an Adaptive Low-Dimensional Control for a Hybrid Neuroprosthesis}, ISBN={9783319466682 9783319466699}, ISSN={2195-3562 2195-3570}, url={http://dx.doi.org/10.1007/978-3-319-46669-9_114}, DOI={10.1007/978-3-319-46669-9_114}, booktitle={Converging Clinical and Engineering Research on Neurorehabilitation II}, publisher={Springer International Publishing}, author={Alibeji, Naji A. and Kirsch, Nicholas A. and Sharma, Nitin}, editor={Ibáñez, J. and González-Vargas, J. and Azorín, J. and Akay, M. and Pons, J.Editors}, year={2017}, pages={693–697}, collection={Biosystems & Biorobotics} }
 @inproceedings{sharma_2017, title={Shared control of functional electrical stimulation and an electric motor in a hybrid neuroprosthesis}, author={Sharma, N.}, year={2017}, month={May} }
 @misc{sharma_2017, title={Shared control of functional electrical stimulation and an electric motor in a hybrid neuroprosthesis}, author={Sharma, S.}, year={2017}, month={Mar} }
 @misc{sharma_2016, title={Control methods for shared use of an electrically-stimulated human muscle and a robot in a hybrid neuroprosthetic}, author={Sharma, N.}, year={2016}, month={Jun} }
 @inproceedings{bao_kirsch_sharma_2016, title={Dynamic control allocation of a feedback linearized hybrid neuroprosthetic system}, ISBN={9781467386821}, url={http://dx.doi.org/10.1109/acc.2016.7525534}, DOI={10.1109/acc.2016.7525534}, booktitle={2016 American Control Conference (ACC)}, publisher={IEEE}, author={Bao, Xuefeng and Kirsch, Nicholas and Sharma, Nitin}, year={2016}, month={Jul} }
 @inproceedings{qiu_alibeji_sharma_2016, place={Hoboken, NJ}, title={Robust compensation of electromechanical delay during neuromuscular electrical stimulation of antagonistic muscles}, ISBN={9781467386821}, url={http://dx.doi.org/10.1109/acc.2016.7526124}, DOI={10.1109/acc.2016.7526124}, booktitle={2016 American Control Conference (ACC)}, publisher={IEEE}, author={Qiu, Tianyi and Alibeji, Naji and Sharma, Nitin}, year={2016}, month={Jul} }
 @misc{sharma_2016, title={Shared control of functional electrical stimulation and an electric motor in a hybrid neuroprosthesis}, author={Sharma, N.}, year={2016}, month={Mar} }
 @misc{sharma_2016, title={Shared control of functional electrical stimulation and an electric motor in a hybrid neuroprosthesis}, author={Sharma, N.}, year={2016}, month={Nov} }
 @inproceedings{kirsch_alibeji_dicianno_sharma_2016, place={Hoboken, NJ}, title={Switching control of functional electrical stimulation and motor assist for muscle fatigue compensation}, ISBN={9781467386821}, url={http://dx.doi.org/10.1109/acc.2016.7526123}, DOI={10.1109/acc.2016.7526123}, booktitle={2016 American Control Conference (ACC)}, publisher={IEEE}, author={Kirsch, Nicholas and Alibeji, Naji and Dicianno, Brad E. and Sharma, Nitin}, year={2016}, month={Jul} }
 @article{alibeji_kirsch_sharma_2015, title={A Muscle Synergy-Inspired Adaptive Control Scheme for a Hybrid Walking Neuroprosthesis}, volume={3}, ISSN={2296-4185}, url={http://dx.doi.org/10.3389/fbioe.2015.00203}, DOI={10.3389/fbioe.2015.00203}, journal={Frontiers in Bioengineering and Biotechnology}, publisher={Frontiers Media SA}, author={Alibeji, Naji A. and Kirsch, Nicholas Andrew and Sharma, Nitin}, year={2015}, month={Dec}, pages={203} }
 @article{alibeji_kirsch_sharma_2015, title={An Adaptive Low-Dimensional Control for a Hybrid Neuroprosthesis}, volume={48}, ISSN={2405-8963}, url={http://dx.doi.org/10.1016/j.ifacol.2015.10.156}, DOI={10.1016/j.ifacol.2015.10.156}, number={20}, journal={IFAC-PapersOnLine}, publisher={Elsevier BV}, author={Alibeji, Naji A. and Kirsch, Nicholas A. and Sharma, Nitin}, year={2015}, pages={303–308} }
 @misc{sharma_2015, title={Closed-loop Control Methods for a Hybrid Neuroprosthesis}, author={Sharma, N.}, year={2015}, month={Jun} }
 @misc{sharma_2015, title={Closed-loop Control Methods for a Hybrid Neuroprosthesis}, author={Sharma, N.}, year={2015}, month={Oct} }
 @inproceedings{alibeji_kirsch_sharma_2015, title={Dynamic surface control of neuromuscular electrical stimulation of a musculoskeletal system with activation dynamics and an input delay}, ISBN={9781479986842}, url={http://dx.doi.org/10.1109/acc.2015.7170806}, DOI={10.1109/acc.2015.7170806}, booktitle={2015 American Control Conference (ACC)}, publisher={IEEE}, author={Alibeji, Naji and Kirsch, Nicholas and Sharma, Nitin}, year={2015}, month={Jul} }
 @inproceedings{ravichandar_dani_khadijah-hajdu_kirsch_zhong_sharma_2015, title={Expectation Maximization Method to Identify an Electrically Stimulated Musculoskeletal Model}, ISBN={9780791857250}, url={http://dx.doi.org/10.1115/dscc2015-9956}, DOI={10.1115/dscc2015-9956}, number={DSCC2015-9956DSCC2015-9956}, booktitle={Volume 2: Diagnostics and Detection; Drilling; Dynamics and Control of Wind Energy Systems; Energy Harvesting; Estimation and Identification; Flexible and Smart Structure Control; Fuels Cells/Energy Storage; Human Robot Interaction; HVAC Building Energy Management; Industrial Applications; Intelligent Transportation Systems; Manufacturing; Mechatronics; Modelling and Validation; Motion and Vibration Control Applications}, publisher={American Society of Mechanical Engineers}, author={Ravichandar, Harish and Dani, Ashwin and Khadijah-Hajdu, Jacquelyn and Kirsch, Nicholas and Zhong, Qiang and Sharma, Nitin}, year={2015}, month={Oct} }
 @article{alibeji_kirsch_farrokhi_sharma_2015, title={Further Results on Predictor-Based Control of Neuromuscular Electrical Stimulation}, volume={23}, ISSN={1534-4320 1558-0210}, url={http://dx.doi.org/10.1109/tnsre.2015.2418735}, DOI={10.1109/tnsre.2015.2418735}, number={6}, journal={IEEE Transactions on Neural Systems and Rehabilitation Engineering}, publisher={Institute of Electrical and Electronics Engineers (IEEE)}, author={Alibeji, Naji and Kirsch, Nicholas and Farrokhi, Shawn and Sharma, Nitin}, year={2015}, month={Nov}, pages={1095–1105} }
 @inproceedings{kirsch_alibeji_sharma_2015, title={Nonlinear Model Predictive Control of Functional Electrical Stimulation}, ISBN={9780791857250}, url={http://dx.doi.org/10.1115/dscc2015-9762}, DOI={10.1115/dscc2015-9762}, abstractNote={One of the major limitations of functional electrical stimulation (FES) is the rapid onset of muscle fatigue. Minimizing stimulation is the key to decreasing the adverse effects of muscle fatigue caused by FES. Optimal control can be used to compute the minimum amount of stimulation necessary to produce a desired motion. In this paper, a gradient projection-based model predictive controller is used for an approximate optimal control of a knee extension neuroprosthesis. A control Lyapunov function is used as a terminal cost to ensure stability of the model predictive control.}, booktitle={Volume 2: Diagnostics and Detection; Drilling; Dynamics and Control of Wind Energy Systems; Energy Harvesting; Estimation and Identification; Flexible and Smart Structure Control; Fuels Cells/Energy Storage; Human Robot Interaction; HVAC Building Energy Management; Industrial Applications; Intelligent Transportation Systems; Manufacturing; Mechatronics; Modelling and Validation; Motion and Vibration Control Applications}, publisher={American Society of Mechanical Engineers}, author={Kirsch, Nicholas A. and Alibeji, Naji A. and Sharma, Nitin}, year={2015}, month={Oct} }
 @article{doll_kirsch_sharma_2015, title={Optimization of a Stimulation Train based on a Predictive Model of Muscle Force and Fatigue}, volume={48}, ISSN={2405-8963}, url={http://dx.doi.org/10.1016/j.ifacol.2015.10.162}, DOI={10.1016/j.ifacol.2015.10.162}, number={20}, journal={IFAC-PapersOnLine}, publisher={Elsevier BV}, author={Doll, Brian D. and Kirsch, Nicholas A. and Sharma, Nitin}, year={2015}, pages={338–342} }
 @inproceedings{dani_sharma_2014, title={A discrete-time nonlinear estimator for an orthosis-aided gait}, volume={1}, booktitle={ASME 2014 Dynamic Systems and Control Conference, DSCC 2014}, author={Dani, A. and Sharma, N.}, year={2014} }
 @inproceedings{kirsch_alibeji_fisher_gregory_sharma_2014, title={A semi-active hybrid neuroprosthesis for restoring lower limb function in paraplegics}, DOI={10.1109/EMBC.2014.6944144}, booktitle={2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2014}, author={Kirsch, N. and Alibeji, N. and Fisher, L. and Gregory, C. and Sharma, N.}, year={2014}, pages={2557–2560} }
 @inproceedings{alibeji_kirsch_sethi_sharma_2014, title={A state synchronization controller for functional electrical stimulation-based telerehabilitation}, volume={3}, DOI={10.1115/DSCC2014-6139}, booktitle={ASME 2014 Dynamic Systems and Control Conference, DSCC 2014}, author={Alibeji, N.A. and Kirsch, N.A. and Sethi, A. and Sharma, N.}, year={2014} }
 @article{sharma_mushahwar_stein_2014, title={Dynamic optimization of FES and orthosis-based walking using simple models}, volume={22}, DOI={10.1109/TNSRE.2013.2280520}, number={1}, journal={IEEE Transactions on Neural Systems and Rehabilitation Engineering}, author={Sharma, N. and Mushahwar, V. and Stein, R.}, year={2014}, pages={114–126} }
 @inproceedings{kirsch_alibeji_sharma_2014, title={Model predictive control-based dynamic control allocation in a hybrid neuroprosthesis}, volume={3}, DOI={10.1115/DSCC2014-6133}, booktitle={ASME 2014 Dynamic Systems and Control Conference, DSCC 2014}, author={Kirsch, N.A. and Alibeji, N.A. and Sharma, N.}, year={2014} }
 @inproceedings{sharma_dani_2014, place={Hoboken, NJ}, title={Nonlinear estimation of gait kinematics during functional electrical stimulation and orthosis-based walking}, ISBN={9781479932740 9781479932726 9781479932719}, url={http://dx.doi.org/10.1109/acc.2014.6859342}, DOI={10.1109/ACC.2014.6859342}, booktitle={2014 American Control Conference}, publisher={IEEE}, author={Sharma, Nitin and Dani, Ashwin}, year={2014}, month={Jun}, pages={4778–4783} }
 @article{wang_sharma_johnson_gregory_dixon_2013, title={Adaptive inverse optimal neuromuscular electrical stimulation}, volume={43}, DOI={10.1109/TSMCB.2012.2228259}, number={6}, journal={IEEE Transactions on Cybernetics}, author={Wang, Q. and Sharma, N. and Johnson, M. and Gregory, C.M. and Dixon, W.E.}, year={2013}, pages={1710–1718} }
 @inproceedings{alibeji_kirsch_sharma_2013, title={Control of functional electrical stimulation in the presence of electromechanical and communication delays}, DOI={10.1109/NER.2013.6695931}, booktitle={International IEEE/EMBS Conference on Neural Engineering, NER}, author={Alibeji, N. and Kirsch, N. and Sharma, N.}, year={2013}, pages={299–302} }
 @inproceedings{kirsch_alibeji_sharma_2013, title={Optimized control of different actuation strategies for FES and orthosis aided gait}, volume={1}, DOI={10.1115/DSCC2013-4080}, booktitle={ASME 2013 Dynamic Systems and Control Conference, DSCC 2013}, author={Kirsch, N. and Alibeji, N.A. and Sharma, N.}, year={2013} }
 @article{fischer_dani_sharma_dixon_2013, title={Saturated control of an uncertain nonlinear system with input delay}, volume={49}, DOI={10.1016/j.automatica.2013.02.013}, number={6}, journal={Automatica}, author={Fischer, N. and Dani, A. and Sharma, N. and Dixon, W.E.}, year={2013}, pages={1741–1747} }
 @inproceedings{sharma_2012, title={A predictor-based compensation for electromechanical delay during neuromuscular electrical stimulation-II}, booktitle={Proceedings of the American Control Conference}, author={Sharma, N.}, year={2012}, pages={5604–5609} }
 @article{sharma_gregory_johnson_dixon_2012, title={Closed-loop neural network-based NMES control for human limb tracking}, volume={20}, DOI={10.1109/TCST.2011.2125792}, number={3}, journal={IEEE Transactions on Control Systems Technology}, author={Sharma, N. and Gregory, C.M. and Johnson, M. and Dixon, W.E.}, year={2012}, pages={712–725} }
 @inproceedings{sharma_stein_2012, title={Gait planning and double support phase model for functional electrical stimulation-based walking}, DOI={10.1109/EMBC.2012.6346325}, booktitle={Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS}, author={Sharma, N. and Stein, R.}, year={2012}, pages={1904–1907} }
 @article{sharma_stein_2012, title={Gait planning and double support phase model for functional electrical stimulation-based walking.}, volume={2012}, journal={Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference}, author={Sharma, N. and Stein, R.}, year={2012}, pages={1904–1907} }
 @misc{sharma_2012, title={Lyapunov-based Control and Trajectory Planning for Restoring Human Limb Function}, author={Sharma, N.}, year={2012}, month={Feb} }
 @misc{sharma_2012, title={Lyapunov-based Control and Trajectory Planning for Restoring Human Limb Function,}, author={Sharma, N.}, year={2012}, month={Mar} }
 @misc{sharma_2012, title={Nonlinear Control and Optimization Methods for Functional Electrical Stimulation}, author={Sharma, N.}, year={2012}, month={Jan} }
 @misc{sharma_2012, title={Nonlinear Control and Optimization Methods for Functional Electrical Stimulation}, author={Sharma, N.}, year={2012}, month={Feb} }
 @misc{nonlinear control and optimization methods for restoring walking via neuroprosthetics_2012, year={2012}, month={Apr} }
 @misc{sharma_2012, title={Nonlinear Control and Optimization Methods for Restoring Walking via Neuroprosthetics}, author={Sharma, N.}, year={2012}, month={Mar} }
 @inproceedings{fischer_kamalapurkar_sharma_dixon_2012, title={RISE-based control of an uncertain nonlinear system with time-varying state delays}, DOI={10.1109/CDC.2012.6427002}, booktitle={Proceedings of the IEEE Conference on Decision and Control}, author={Fischer, N. and Kamalapurkar, R. and Sharma, N. and Dixon, W.E.}, year={2012}, pages={3502–3507} }
 @article{sharma_bhasin_wang_dixon_2012, title={Rise-based adaptive control of a control affine uncertain nonlinear system with unknown state delays}, volume={57}, DOI={10.1109/TAC.2011.2166314}, number={1}, journal={IEEE Transactions on Automatic Control}, author={Sharma, N. and Bhasin, S. and Wang, Q. and Dixon, W.E.}, year={2012}, pages={255–259} }
 @article{downey_bellman_sharma_wang_gregory_dixon_2011, title={A novel modulation strategy to increase stimulation duration in neuromuscular electrical stimulation}, volume={44}, DOI={10.1002/mus.22058}, number={3}, journal={Muscle and Nerve}, author={Downey, R.J. and Bellman, M. and Sharma, N. and Wang, Q. and Gregory, C.M. and Dixon, W.E.}, year={2011}, pages={382–387} }
 @article{bhasin_sharma_patre_dixon_2011, title={Asymptotic tracking by a reinforcement learning-based adaptive critic controller}, volume={9}, DOI={10.1007/s11768-011-0170-8}, number={3}, journal={Journal of Control Theory and Applications}, author={Bhasin, S. and Sharma, N. and Patre, P. and Dixon, W.}, year={2011}, pages={400–409} }
 @inproceedings{sharma_stein_2011, title={Optimal trajectory planning for a constrained functional electrical stimulation-based human walking}, ISBN={9781457715891 9781424441211 9781424441228}, url={http://dx.doi.org/10.1109/iembs.2011.6090134}, DOI={10.1109/IEMBS.2011.6090134}, booktitle={2011 Annual International Conference of the IEEE Engineering in Medicine and Biology Society}, publisher={IEEE}, author={Sharma, Nitin and Stein, Richard}, year={2011}, month={Aug}, pages={603–607} }
 @article{sharma_stein_2011, title={Optimal trajectory planning for a constrained functional electrical stimulation-based human walking.}, volume={2011}, journal={Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference}, author={Sharma, N. and Stein, R.}, year={2011}, pages={603–607} }
 @article{sharma_gregory_dixon_2011, title={Predictor-based compensation for electromechanical delay during neuromuscular electrical stimulation}, volume={19}, DOI={10.1109/TNSRE.2011.2166405}, number={6}, journal={IEEE Transactions on Neural Systems and Rehabilitation Engineering}, author={Sharma, N. and Gregory, C.M. and Dixon, W.E.}, year={2011}, pages={601–611} }
 @article{sharma_bhasin_wang_dixon_2011, title={Predictor-based control for an uncertain EulerLagrange system with input delay}, volume={47}, DOI={10.1016/j.automatica.2011.03.016}, number={11}, journal={Automatica}, author={Sharma, N. and Bhasin, S. and Wang, Q. and Dixon, W.E.}, year={2011}, pages={2332–2342} }
 @inproceedings{fischer_dani_sharma_dixon_2011, title={Saturated control of an uncertain Euler-Lagrange system with input delay}, DOI={10.1109/CDC.2011.6160646}, booktitle={Proceedings of the IEEE Conference on Decision and Control}, author={Fischer, N. and Dani, A. and Sharma, N. and Dixon, W.E.}, year={2011}, pages={7587–7592} }
 @inproceedings{wang_sharma_johnson_dixon_2010, title={Adaptive inverse optimal neuromuscular electrical stimulation}, DOI={10.1109/ISIC.2010.5612877}, booktitle={IEEE International Symposium on Intelligent Control - Proceedings}, author={Wang, Q. and Sharma, N. and Johnson, M. and Dixon, W.E.}, year={2010}, pages={1287–1292} }
 @inproceedings{wang_sharma_johnson_dixon_2010, title={Asymptotic optimal control of neuromuscular electrical stimulation}, DOI={10.1109/CDC.2010.5717462}, booktitle={Proceedings of the IEEE Conference on Decision and Control}, author={Wang, Q. and Sharma, N. and Johnson, M. and Dixon, W.E.}, year={2010}, pages={839–844} }
 @inproceedings{sharma_dixon_2010, title={Compensating Input Delay and Muscle Fatigue during Neuromuscular Electrical Stimulation Control}, url={http://biomedsym.beckman.illinois.edu/posters/Sharma2.pdf}, author={Sharma, N. and Dixon, W.E.}, year={2010}, month={Apr} }
 @inproceedings{sharma_2010, title={Lyapunov-based Control Methods for Neuromuscular Electrical Stimulation}, author={Sharma, N.}, year={2010}, month={Sep} }
 @inproceedings{sharma_patre_gregory_dixon_2010, title={Nonlinear control of NMES: Incorporating fatigue and calcium dynamics}, DOI={10.1115/DSCC2009-2642}, number={PART A}, booktitle={Proceedings of the ASME Dynamic Systems and Control Conference 2009, DSCC2009}, author={Sharma, N. and Patre, P.M. and Gregory, C.M. and Dixon, W.E.}, year={2010}, pages={705–712} }
 @inproceedings{sharma_bhasin_wang_dixon_2010, title={Predictor-based control for an uncertain Euler-Lagrange system with input delay}, ISBN={9781424474271 9781424474264 9781424474257}, url={http://dx.doi.org/10.1109/acc.2010.5531212}, DOI={10.1109/acc.2010.5531212}, booktitle={Proceedings of the 2010 American Control Conference}, publisher={IEEE}, author={Sharma, N and Bhasin, S and Wang, Q and Dixon, W E}, year={2010}, month={Jun}, pages={1422–1427} }
 @inproceedings{sharma_bhasin_wang_dixon_2010, title={RISE-based adaptive control of an uncertain nonlinear system with unknown state delays}, DOI={10.1109/CDC.2010.5716973}, booktitle={Proceedings of the IEEE Conference on Decision and Control}, author={Sharma, N. and Bhasin, S. and Wang, Q. and Dixon, W.E.}, year={2010}, pages={1773–1778} }
 @inproceedings{bhasin_sharma_patre_dixon_2010, title={Robust asymptotic tracking of a class of nonlinear systems using an adaptive critic based controller}, booktitle={Proceedings of the 2010 American Control Conference, ACC 2010}, author={Bhasin, S. and Sharma, N. and Patre, P.M. and Dixon, W.E.}, year={2010}, pages={3223–3228} }
 @article{sharma_stegath_gregory_dixon_2009, title={Nonlinear neuromuscular electrical stimulation tracking control of a human limb}, volume={17}, DOI={10.1109/TNSRE.2009.2023294}, number={6}, journal={IEEE Transactions on Neural Systems and Rehabilitation Engineering}, author={Sharma, N. and Stegath, K. and Gregory, C.M. and Dixon, W.E.}, year={2009}, pages={576–584} }
 @article{gregory_bickel_sharma_dixon_2008, title={Comparing the force- and excursion-frequency relationships in human skeletal muscle}, volume={38}, DOI={10.1002/mus.21161}, number={6}, journal={Muscle and Nerve}, author={Gregory, C.M. and Bickel, C.S. and Sharma, N. and Dixon, W.E.}, year={2008}, pages={1627–1629} }
 @inproceedings{stegath_sharma_gregory_dixon_2008, title={Experimental demonstration of rise-based NMES of human quadriceps muscle}, DOI={10.1109/LSSA.2007.4400880}, booktitle={2007 IEEE/NIH Life Science Systems and Applications Workshop, LISA}, author={Stegath, K. and Sharma, N. and Gregory, C.M. and Dixon, W.E.}, year={2008}, pages={43–46} }
 @inproceedings{sharma_gregory_johnson_dixon_2008, title={Modified neural network-based electrical stimulation for human limb tracking}, DOI={10.1109/ISIC.2008.4635968}, booktitle={IEEE International Symposium on Intelligent Control - Proceedings}, author={Sharma, N. and Gregory, C.M. and Johnson, M. and Dixon, W.E.}, year={2008}, pages={1320–1325} }
 @inproceedings{stegath_sharma_gregory_dixon_2008, title={Nonlinear tracking control of a human limb via neuromuscular electrical stimulation}, DOI={10.1109/ACC.2008.4586776}, booktitle={Proceedings of the American Control Conference}, author={Stegath, K. and Sharma, N. and Gregory, C.M. and Dixon, W.E.}, year={2008}, pages={1941–1946} }
 @inproceedings{stegath_sharma_gregory_dixon_2007, title={An extremum seeking method for non-isometric neuromuscular electrical stimulation}, DOI={10.1109/ICSMC.2007.4413886}, booktitle={Conference Proceedings - IEEE International Conference on Systems, Man and Cybernetics}, author={Stegath, K. and Sharma, N. and Gregory, C.M. and Dixon, W.E.}, year={2007}, pages={2528–2532} }