Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Machines: Problem Solving II

Machines: Problem Solving II

Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. Consider a lifting tong carrying a 100 kg load. It comprises movable sections DAF and CBG linked together with member AB.

Simplification of a Force and Couple System: II

Simplification of a Force and Couple System: II

In a three-dimensional system, multiple forces can act on an object. These forces can be combined into a single equivalent force, known as the resultant force. Similarly, the moments generated by these forces can be combined into a single equivalent moment, the resultant couple moment. In certain situations, these two entities may not be mutually perpendicular, meaning they do not have a 90-degree angle between them. This unique condition requires a deeper understanding of the interplay between...

Mechanical Systems

Mechanical Systems

Mechanical systems are analogous to to electrical networks where springs and masses play similar roles to inductors and capacitors, respectively. A viscous damper in mechanical systems functions similarly to a resistor in electrical networks, dissipating energy. The forces acting on a mass in such systems include an applied force in the direction of motion, counteracted by forces from the spring, a viscous damper, and the mass's acceleration. This interplay of forces is mathematically described...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

A model based on cyclist fall experiments which predicts the maximum allowable handlebar disturbance from which a cyclist can recover balance.

Accident; analysis and prevention·2025

Same author

Magnitude and variability of individual elbow load in repetitive baseball pitching.

Scientific reports·2023

Same author

A Muscle Load Feedback Application for Strength Training: A Proof-of-Concept Study.

Sports (Basel, Switzerland)·2023

Same author

Ankle-Foot-Orthosis "Hermes" Compensates Pathological Ankle Stiffness of Chronic Stroke-A Proof of Concept.

IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society·2023

Same author

Sensory weighting of position and force feedback during pinching.

Experimental brain research·2023

Same author

Cost of Transport of Undulating Fin Propulsion.

Biomimetics (Basel, Switzerland)·2023

Search research articles

Related Experiment Video

Updated: Jul 18, 2026

A Flexible Wearable Supernumerary Robotic Limb for Chronic Stroke Patients

A Flexible Wearable Supernumerary Robotic Limb for Chronic Stroke Patients

Published on: October 27, 2023

Kinematic design to improve ergonomics in human machine interaction.

André Schiele¹, Frans C T van der Helm

¹Automation and Robotics Section, Mechanical Engineering Department, European Space Research and Technology Centre, European Space Agency, 2201 AZ Noordwijk ZH, The Netherlands. andre.schiele@esa.int

IEEE Transactions on Neural Systems and Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society

|December 28, 2006

Summary

This study presents a new ergonomic design for upper-arm exoskeletons, enhancing human-machine interaction. The novel design allows natural limb movement and comfortable wear for rehabilitation robotics.

Related Experiment Videos

Last Updated: Jul 18, 2026

A Flexible Wearable Supernumerary Robotic Limb for Chronic Stroke Patients

A Flexible Wearable Supernumerary Robotic Limb for Chronic Stroke Patients

Published on: October 27, 2023

Area of Science:

Robotics
Biomechanics
Human-Machine Interaction

Background:

Ergonomic design is crucial for effective human-machine interaction in exoskeletons.
Existing upper-arm exoskeletons often have limitations in workspace interaction and comfort.
Natural limb kinematics present a complex challenge for exoskeleton design.

Purpose of the Study:

To introduce a novel kinematic design paradigm for ergonomic human-machine interaction.
To develop and optimize an upper-arm exoskeleton based on a generic kinematic design.
To enable exoskeletons to interact with a larger portion of the natural limb workspace.

Main Methods:

Formulated generic goals for optimal ergonomic design.
Developed a nine degree-of-freedom (DOF) model of human arm kinematics.
Applied the kinematic model to design, test, and optimize an upper-arm exoskeleton structure.

Main Results:

The developed exoskeleton interacts with an unprecedented portion of the natural limb workspace.
The device actuates each DOF unambiguously without singularities and does not require joint axis alignment.
The exoskeleton is comfortable, does not create residual forces with misalignment, and has short doff times.

Conclusions:

The novel kinematic design paradigm offers significant improvements for upper-arm exoskeletons.
The exoskeleton's features enable longer rehabilitation training sessions and natural task simulation.
The design enhances usability across the entire human arm workspace, including shoulder and shoulder girdle movements.