Hi,
I am very interested in buying the Firgelli technologies PQ12 linear actuator (RB-Fir-41), but want to check that the PQ12 model that includes the potentiometer (product code as previous) is correct for my project please. Am I correct in thinking that the potentiometer provides the capacity for better positional accuracy/ driving the actuator so that it can achieve minute positional changes (i want to program it to change position by the smallest possible increments, e.g. 1mm or less)? If I am not correct, can you point me to an alternative please? I have some time pressure attached to getting this question answered, so if I’m lucky enough that someone sees this post soon, I would very much appreciate a quick response.
Thanks very much.
Theoretically the Firgelli PQ12 has a positional accuracy of ±0.1mm, based on the linear potentiomter included.
The other version of the PQ12 is -S which does not have any feedback.
Note however that although the positional accuracy is theoretically 0.1mm, if there is a load, the actuator may not move if you send the command to extend or retract by 0.1mm
We do not have any other actuators with that level of positional accuracy, so you’ll really need to test it for your application.
Note too that we strongly suggest using the LAC with the PQ12-P.
If you can tell us a bit more about your application and why you need millimeter accuracy, we may be able to help more.
Hi,
I very much appreciate your quick reply. I am a PhD student at the university of Edinburgh, and I need that level of accuracy for an experiment I’m performing. To cut a very long story short, I am stretching a very small tissue preparation (quite delicate/ light - i can’t imagine it’ll require much torque to move it) by a number of microns. I really want to drive with the Arduino board/ system.
Thanks again,
Iain
You could use the PQ12 in a lever system so that there is a ratio between the stroke of the PQ12 and that of the other side (for example a 10:1 ratio - for every mm of extension of the PQ12, you get only 0.1mm of retraction on the oppposite side.
