bexo V3

Active Back Exoskeletons for labor intensive workers.

A research project under EPIC Lab at Georgia Tech.

While I think Bexo V2.5 is a really great active back ​exoskeleton design (not bias at all 😌). It still has a lot of ​room for improvements. One big thing is the weight of the ​device, limiting the comfortability of it. Nothing can be done ​much to improve this since the design is very much bare ​bone. Most of the weight comes from the two actuators ​(AK80-6). Therefore, I am exploring a new design overhaul ​that utilizes only one actuator!

To archive the same controllability and performance using ​one motor, I have to be very creative and innovative. After a ​lot of research and digging, I decided that Torsen (Torque ​Sensing) Limited Slip Differential (LSD) Drive would be the way ​to go.

To Test the concept, I printed a design I found online out ​and see if it would be able to tighten two cables to the same ​tension with two starting tensions as you can see in the video.

After making sure that Torsen LSD would work for this ​application. I went ahead and design a miniaturized ​version of my own to save the weight and spec it to ​what I need.