Tension Torsion Machine Guidance

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1

Hi,

I am doing a university project and my group are trying to create a tension torsion test machine to work inside an SEM, we would like the option to control with torque and position and we were hoping you could recommend a motor, drive and interface for us that would be suitable for this application. We would be looking at a controlled torque of less than 0.5Nm~70oz-in and a total size of the machine being 100x100x25mm~3.9" x 3.9" x 1", so we need to be mindful of size when considering the need for a linear motor and a heater too. For the control loop, we were thinking of an optical encoder for both position and torque.

Any advice and recommendations on different products would be appreciated.

2

We don’t currently stock many motor/encoder options (this https://www.sparkfun.com/products/11102 is about the best we offer); I’d suggest poking around here https://www.pololu.com/category/157/enc … gearmotors and https://www.servocity.com/ to get a better idea of what’s available…

On the other side of things, if you want to look into incorporating a DIY system, you would always find a servo that matches your specs and add in an optical encoder like this https://www.youtube.com/watch?v=ECLrLupFW10 :smiley:

3

Thank you! Any recommendations regarding the motors themselves and how to control them?