Design of a Novel Powered Exoskeleton for Human Jump Augmentation

dc.contributor.authorMccray, Mason Tyleren
dc.contributor.committeechairAsbeck, Alan Thomasen
dc.contributor.committeememberBartlett, Michael Daviden
dc.contributor.committeememberWest, Robert L.en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2025-06-06T08:02:13Zen
dc.date.available2025-06-06T08:02:13Zen
dc.date.issued2025-06-05en
dc.description.abstractDesign of powered exoskeletons have typically focused on walking assistance, load carriage, and restoring lost functionality. This research presents the design of a novel powered exoskeleton for jumping assistance. The exoskeleton has a total mass of 24~kg (55~lb) and is capable of providing an additional 5000~N of launch force, allowing users to achieve vertical jump heights exceeding 2 meters. Force transmission is achieved through a prismatic linear actuator connected to a variety of soft goods to transfer forces to the user's center of mass. The underactuated exoskeleton utilizes a single motor per leg store energy in high-strain elastic and release the energy during launch. Modeling of jumping forces, results from material testing, and mechanical design analysis are presented. Encoders, inertial measurement units, and time of flight sensors are implemented alongside multiple microcontrollers and robust communication protocols to estimate system state and control actuation. Preliminary test results of a manufactured system are presented for design validation. The work establishes a test bed for further jumping biomechanics analysis, including landing from high falls and further advances in powered jumping.en
dc.description.abstractgeneralExoskeletons are wearable devices that help improve human abilities. Most current exoskeletons focus on assisting during walking, carrying heavy loads, reducing injuries during repetitive tasks, or restoring lost functionality. The design presented here focuses on the unique challenge of assisting humans in jumping higher than they can alone. The exoskeleton presented attaches to the waist, legs, and feet, and is capable of providing enough force to allow the wearer to jump over two meters high. The exoskeleton does through use of elastic bands, which act as springs, and an electric motor. Before a jump, the motor stretches the elastic bands, and when the user is ready, these elastic bands snap back to provide a quick, powerful launch force. When not jumping, the exoskeleton allows users to comfortably walk and move their lower body in all directions. Sensors and electronics allow for control of the exoskeleton before and during a jump, allowing the user to control the exoskeleton with natural movements. Calculations and early tests show that the system works as expected, which opens the door to further research in improving jump height and allowing humans to survive falls from great heights.en
dc.description.degreeMaster of Scienceen
dc.format.mediumETDen
dc.identifier.othervt_gsexam:44227en
dc.identifier.urihttps://hdl.handle.net/10919/135089en
dc.language.isoenen
dc.publisherVirginia Techen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectexoskeletonen
dc.subjectjump augmentationen
dc.subjectlower bodyen
dc.subjectenergy storageen
dc.subjectelasticsen
dc.titleDesign of a Novel Powered Exoskeleton for Human Jump Augmentationen
dc.typeThesisen
thesis.degree.disciplineMechanical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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