Hyunglae Lee

About

Hyunglae Lee is a prominent biomedical and rehabilitation engineer whose research sits at the intersection of human biomechanics, robotic systems, and physical human-robot interaction. He is best known for his extensive investigations into ankle mechanical impedance — the joint's resistive properties during movement — which have transformed our understanding of how the human nervous system modulates lower-limb mechanics during locomotion and in response to neurological conditions such as stroke and multiple sclerosis. His landmark 2014 study on time-varying ankle impedance during locomotion has accumulated over 165 citations, while his systematic series of papers characterizing static and dynamic ankle impedance under relaxed and active muscle conditions has established foundational benchmarks for the field. Beyond biomechanics characterization, Lee has made meaningful contributions to assistive and rehabilitative robotics, including the development of innovative exoskeleton systems — notably a parallel-actuated shoulder exoskeleton and a soft robotic ankle-foot orthosis designed to support gait rehabilitation. His work on human-interactive robot design principles further underscores his commitment to bridging theoretical biomechanics with practical clinical applications. Collectively, his research has garnered hundreds of citations, providing essential tools and frameworks that continue to guide the next generation of rehabilitation technologies and wearable robotic devices.

Research Focus

Key Achievements

Top Papers

1. 1
   Time-Varying Ankle Mechanical Impedance During Human Locomotion

   165 citations · 2014
2. 2
   Multivariable static ankle mechanical impedance with relaxed muscles

   87 citations · 2011
3. 3
   Multivariable Static Ankle Mechanical Impedance With Active Muscles

   72 citations · 2013
4. 4
   A Novel Shoulder Exoskeleton Robot Using Parallel Actuation and a Passive Slip Interface

   55 citations · 2016
5. 5
   Multivariable Dynamic Ankle Mechanical Impedance With Relaxed Muscles

   47 citations · 2014
6. 6
   Toward A Soft Robotic Ankle-Foot Orthosis (SR-AFO) Exosuit for Human Locomotion: Preliminary Results in Late Stance Plantarflexion Assistance

   39 citations · 2020
7. 7
   Development of a Two-Axis Robotic Platform for the Characterization of Two-Dimensional Ankle Mechanics

   31 citations · 2019
8. 8
   Static ankle impedance in stroke and multiple sclerosis: A feasibility study

   29 citations · 2011
9. 9
   Essential considerations for design and control of human-interactive robots

   29 citations · 2016
10. 10
    Stochastic Estimation of the Multi-Variable Mechanical Impedance of the Human Ankle With Active Muscles

    26 citations · 2010

Key Collaborators

Contact & Links