Week Two

Hi Readers!

I am pleased to announce that I got to interact and use the BiOM last Monday. Prior to going to the lab, I didn't know what to expect. I didn't know whether I'd receive an in-depth lecture on a biologically backed BiOM or a lesson on power efficiency. But, unsurprisingly, I ended up getting the best of both worlds and a BiOM tutorial. Having two advisors from different fields (Biology and Engineering) was incredibly beneficial in learning about the device.

Here's some of what I've learned so far:

1. Currently, there's a muscle model referred to as the Hill Model. This model was primarily used as a design for understanding muscle tension, force and velocity. When testing the BiOM, the team at NAU uses a different model, their algorithm, to better relate the device to its biological backing. 
2. This device relies on a biologically inspired algorithm that is meant to meet necessary physical conditions like power efficiency.
3. Not only is the BiOM powering any movement but it does so accordingly to its users specific weight and height. 
4. The BiOM has been tested by many researchers, all which conclude that it conserves more energy than a passive prosthesis and uses nearly the same amount of energy that's used by a non-amputee. 
5. The testing at NAU has already shown significant data in stair ascent and forward walking. Specifically, the data indicate the powered device is more efficient than passive devices. Additionally, subjects have been generally more pleased by using the BiOM. Problems with backward walking come from the device being less efficient than the human ankle.  

Next week, I'm having a few random friends walk backwards for me so I can see exactly how the leg moves in comparison to how the BiOM moves. 

Thanks for reading, 

Pooja