Seth Altobelli

Engineering (robotics)

Hometown: Phoenix, Arizona, United States

Graduation date: Spring 2023

Seth Altobelli
Health icon, disabled. A red heart with a cardiac rhythm running through it.

FURI | Fall 2021

Designing an Affordable Torsional Spring for a Rotary Series Elastic Actuator

Rotary Series Elastic Actuators are commonly used in rehabilitation exoskeletons due to their inherent compliance creating a level of safety and comfort. Designing and manufacturing torsional springs for this purpose that can withstand high loads while having a low spring constant is a challenging task. Existing solutions commonly rely on using multiple planar springs in series cut with wire electric discharge machining (EDM) resulting in an expensive and non-adjustable spring pack. This FURI project addresses these issues by exploring a method of manufacturing a torsional spring based on interchangeable wire coil-based compression springs.


QR code for the current page

It’s hip to be square.

Students presenting projects at the Fulton Forge Student Research Expo are encouraged to download this personal QR code and include it within your poster. This allows expo attendees to explore more about your project and about you in the future. 

Right click the image to save it to your computer.

Additional projects from this student

Designing a more adjustable and tunable torsional spring may allow for more rapid development of a wearable rehabilitative knee exoskeleton.


  • FURI
  • Summer 2021