I’m considering a DIY Simucube build and am wondering about the feasibility of using other motors. Mostly since the Mige shipping from China is pretty expensive, I wonder if I might have an opportunity to spend that money on something available locally that might be of higher quality, as there seems to be a pretty active surplus market.
What are the specs I should be looking at? What I’m aware of so far is (along with my assumptions/questions):
- Moment of interia (lower is better, and using the Mige motors as a baseline)
- Peak torque
- Static torque (I’m guessing that since we aren’t holding max torque for an extended period of time so as to heat the motor, this isn’t AS important?)
- Maximum current (the IONI Pro outputs 25A peak 17.7A RMS)
- Torque coefficient (not sure if this is to be considered during motor selection or is just needed for configuration?)
- Rated speed (?)
- Anything else?
The first motor I’ve found is this one:
which I think looks pretty good, but the encoder uses some digital interface called Drive Cliq. Does anyone know anything about that?
Also, the HC-RFS353BK (datasheet here: http://dl.mitsubishielectric.com/dl/fa/document/catalog/servo/l03007/l03007d.pdf) looks possibly even better.
Generally, any thoughts that might help both with making a choice on this one and being equipped to search more on my own without having to spam the forums with a bunch of bad choices.
I’m actually an electrical (more electronic though) engineer, but haven’t ever worked with large servo systems before, so if there are any good resources you want to point me at to just go to school on the topic a bit, that’s also appreciated.
Thanks a lot,