I am setting up a 4 point bending tester. It is run by a 2 phase stepper motor (Vexta pk266ma) and a 2 phase stepper driver (Vexta udk2120a). The motor drives a set of spurs gears which in turn drive 2 worm gears which in turn drives 2 power screws to raise and lower the platform. I have the motor turning in steps with an Arduino program.
I need help figuring out what sensing device to measure the distance of the moving platform from the base of the tester(or a home position). The sensor needs to have a fairly high accuracy because it's measuring strain from deflection. Also, I will be using LabVIEW eventually for DAQ and possibly using LabVIEW to fully run the tester or assist Arduino in running it.
Sorry if I am missing any pertinent information, I am fairly new to this.