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Luquan Ren

4 accepted papers

2024

A Lightweight Powered Knee Prosthesis Replicating Early-Stance Knee Flexion During Level Walking

RA-L 2024

Powered knee prostheses promise to improve the mobility of transfemoral amputees by imitating the biomechanics of the missing knee joint. Unfortunately, the heavy weight and short battery life severely limit the application of powered prostheses. Here, we present a lightweight powered knee prosthesi

Cited by 2SourceScholar
2024

Coaxial Integrated Tendon-Driven Actuator: Design, Modeling, Control, and Performance Analysis

RA-L 2024

In this letter, a novel tendon-driven actuator is presented for anthropomimetic robots, mimicking the functionality of a spindle muscle. This actuator can contract and relax, and its tension output can be measured and controlled. The proposed actuator features an innovative space-saving co-axial win

Cited by 0SourceScholar
2023

Tunable Stiffness Caudal Peduncle Leads to Higher Swimming Speed Without Extra Energy

RA-L 2023

Tuning body stiffness like fish to improve swimming efficiency and speed has been adopted by many fish-inspired robotics. However, it is unknown whether the energy saved from improved efficiency can compensate for the energy consumption brought by tuning stiffness itself. To explore this issue, we d

Cited by 23SourceScholar
2022

Design and Validation of a Polycentric Hybrid Knee Prosthesis With Electromagnet-Controlled Mode Transition

RA-L 2022

A hybrid knee prosthesis is proposed in this letter, which consists of a polycentric structure in passive mode for low-torque activities and a single-axis structure in active mode for high-torque activities. A novel mode transition mechanism controls self-holding electromagnets for switching modes b

Cited by 5SourceScholar