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Determining and Controlling External Power Output During Regular Handrim Wheelchair Propulsion
Published on: February 5, 2020
Identification of human-generated forces on wheelchairs during total-body extensor thrusts
Seong-Wook Hong1, Vlad Patrangenaru, William Singhose
1School of Mechanical Engineering, Kumoh National Institute of Technology, 1 Yangho-dong, Kumi, Kyungbuk 730-701, South Korea. swhong@kumoh.ac.kr
Clinical Biomechanics (Bristol, Avon)
|June 13, 2006
Summary
Researchers developed a system to identify human motions and forces during involuntary extensor thrusts in wheelchair users. This method aids in designing safer dynamic seats for individuals with neurological disorders.
Area of Science:
- Biomechanics
- Assistive Technology
- Human-Computer Interaction
Background:
- Involuntary extensor thrusts in wheelchair users with neurological disorders can cause injury and equipment damage.
- Dynamic seats are proposed to enhance safety and freedom for wheelchair users.
- Understanding human-generated forces during extensor thrusts is crucial for effective dynamic seat design.
Purpose of the Study:
- To develop a method for identifying human-generated motions and forces during extensor thrust events.
- To provide data for designing the triggering system of dynamic seats.
Main Methods:
- An experimental system using a video camera to track user motion and footrest sensors to measure forces was developed.
- An inverse dynamic approach with a three-link human body model was employed.
- Experimental data was used to predict human-generated forces.
Main Results:
- The developed system and model were validated through experiments.
- The study analyzed the effects of extensor thrust speed, footrest angle, and seatback angle.
- A performance index was deduced to identify robust regions for force identification.
Conclusions:
- A reliable system for determining human-generated motions and forces during extensor thrusts was successfully developed.
- Experiments and simulations confirmed the system's effectiveness and reliability.
- This research provides essential data for advancing dynamic seat technology for wheelchair users.
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