Ashwin Iyer

College of Engineering

Works (8)

Updated: September 6th, 2023 05:01

2023 article

Nonlinear System Identification of Tremors Dynamics: A Data-driven Approximation Using Koopman Operator Theory

2023 11TH INTERNATIONAL IEEE/EMBS CONFERENCE ON NEURAL ENGINEERING, NER.

By: X. Xue n, A. Iyer n, D. Roque* & N. Sharma n 

co-author countries: United States of America πŸ‡ΊπŸ‡Έ
Sources: Web Of Science, ORCID
Added: September 5, 2023

2022 article

A Hybrid Knee Exoskeleton Using Real-Time Ultrasound-Based Muscle Fatigue Assessment

Sheng, Z., Iyer, A., Sun, Z., Kim, K., & Sharma, N. (2022, May 19). IEEE-ASME TRANSACTIONS ON MECHATRONICS, Vol. 5.

By: Z. Sheng *, A. Iyer n, Z. Sun n, K. Kim & N. Sharma n 

co-author countries: United States of America πŸ‡ΊπŸ‡Έ

Contributors: Z. Sheng *, A. Iyer n, Z. Sun n, K. Kim & N. Sharma n 

author keywords: Muscles; Ultrasonic imaging; Exoskeletons; Switches; Iron; Fatigue; Control systems; Control design; closed loop system; delay system; motion control; nonlinear control system; rehabilitation robotics; robust control; switching systems; state feedback; ultrasonic imaging
Sources: Web Of Science, ORCID
Added: June 6, 2022

2022 article

Continuous Switching Control of an Input-Delayed Antagonistic Muscle Pair During Functional Electrical Stimulation

Sun, Z., Qiu, T., Iyer, A., Dicianno, B. E., & Sharma, N. (2022, June 21). IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, Vol. 6.

By: Z. Sun, T. Qiu*, A. Iyer n, B. Dicianno * & N. Sharma n 

co-author countries: China πŸ‡¨πŸ‡³ United States of America πŸ‡ΊπŸ‡Έ

Contributors: Z. Sun, T. Qiu*, A. Iyer n, B. Dicianno * & N. Sharma n 

author keywords: Muscles; Iron; Switches; Elbow; Control systems; Delays; Recruitment; Antagonistic muscles; delay systems; electromechanical delay (EMD); functional electrical stimulation (FES); Lyapunov-Krasovskii (LK) functionals; Lyapunov stability
Sources: Web Of Science, ORCID
Added: June 22, 2022

2022 journal article

Ultrasound Echogenicity as an Indicator of Muscle Fatigue during Functional Electrical Stimulation

SENSORS, 22(1).

By: Q. Zhang n , A. Iyer n, K. Lambeth n, K. Kim * & N. Sharma n 

co-author countries: United States of America πŸ‡ΊπŸ‡Έ

Contributors: Q. Zhang n , A. Iyer n, K. Lambeth n, K. Kim * & N. Sharma n 

author keywords: muscle fatigue; electrical stimulation; ankle joint; biomechanical phenomena; ultrasonography; linear models; nonlinear dynamics
MeSH headings : Electric Stimulation; Humans; Isometric Contraction; Muscle Contraction; Muscle Fatigue; Muscle, Skeletal; Ultrasonography
Sources: Web Of Science, ORCID
Added: January 8, 2022

2022 article

Ultrasound Imaging-Based Closed-Loop Control of Functional Electrical Stimulation for Drop Foot Correction

Zhang, Q., Lambeth, K., Iyer, A., Sun, Z., & Sharma, N. (2022, September 30). IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, Vol. 9.

By: Q. Zhang n , K. Lambeth n, A. Iyer n, Z. Sun n & N. Sharma n 

co-author countries: United States of America πŸ‡ΊπŸ‡Έ

Contributors: Q. Zhang n , K. Lambeth n, A. Iyer n, Z. Sun n & N. Sharma n 

author keywords: Ankle dorsiflexion; drop foot; functional electrical stimulation (FES); nonlinear control; sampled-data observer (SDO); ultrasound (US) imaging
Sources: Web Of Science, ORCID
Added: October 1, 2022

2021 journal article

A Dual-Modal Approach Using Electromyography and Sonomyography Improves Prediction of Dynamic Ankle Movement: A Case Study

IEEE TRANSACTIONS ON NEURAL SYSTEMS AND REHABILITATION ENGINEERING, 29, 1944–1954.

By: Q. Zhang n , A. Iyer n, Z. Sun n, K. Kim * & N. Sharma n 

co-author countries: United States of America πŸ‡ΊπŸ‡Έ

Contributors: Q. Zhang n , A. Iyer n, Z. Sun n, K. Kim * & N. Sharma n 

author keywords: Imaging; Sensors; Legged locomotion; Feature extraction; Neuromuscular; Dynamics; Biomedical imaging; B-mode ultrasound imaging; surface electromyography; machine learning regression; dynamic ankle dorsiflexion motion; human limb intent
MeSH headings : Ankle; Ankle Joint; Electromyography; Humans; Movement; Muscle, Skeletal
Sources: Web Of Science, ORCID
Added: September 28, 2021

2021 journal article

Evaluation of Non-Invasive Ankle Joint Effort Prediction Methods for Use in Neurorehabilitation Using Electromyography and Ultrasound Imaging

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, 68(3), 1044–1055.

By: Q. Zhang n , A. Iyer n, K. Kim * & N. Sharma* 

co-author countries: United States of America πŸ‡ΊπŸ‡Έ

Contributors: Q. Zhang n , A. Iyer n, K. Kim * & N. Sharma* 

author keywords: Neuromuscular; Biomedical measurement; Force; Mathematical model; Imaging; Dynamics; Ankle dorsiflexion; electromyography; feedforward neural network; linear regression; neuromuscular model; ultrasound imaging
MeSH headings : Ankle Joint / diagnostic imaging; Electromyography; Humans; Isometric Contraction; Muscle, Skeletal / diagnostic imaging; Neurological Rehabilitation; Ultrasonography
Sources: Web Of Science, ORCID
Added: March 22, 2021

2021 conference paper

Ultrasound Echogenicity-based Assessment of Muscle Fatigue During Functional Electrical Stimulation

2021 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC), 5948–5952.

By: Q. Zhang* , A. Iyer*, K. Lambeth*, K. Kim * & N. Sharma* 

co-author countries: United States of America πŸ‡ΊπŸ‡Έ

Contributors: Q. Zhang* , A. Iyer*, K. Lambeth*, K. Kim * & N. Sharma* 

Event: 43rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society at Mexico on November 1-5, 2021

MeSH headings : Electric Stimulation; Electromyography; Humans; Isometric Contraction; Muscle Fatigue; Ultrasonography
Sources: Web Of Science, ORCID
Added: April 25, 2022

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